def A_rule (mdot,A,M,Pt,Tt):
import numpy as np
import sympy as sy
gam=1.4
R=287
delta=(gam-1)/2.
# mdot=A*(Pt/Tt**0.5)*(gam/R)**0.5*M*(1+delta*M**2)**(-1*(gam+1)/(2*(gam-1))
if mdot!=0 and M==0 and A!=0:
Mach = sy.Symbol('Mach', positive=True, real=True)
eq=mdot-A*Mach*Pt*sy.sqrt(gam/R/Tt)*(1+delta*Mach**2)**((gam+1)/(-2*(gam-1)))
M=sy.nsolve(eq,Mach,0.2)
return M
elif mdot==0 and M!=0 and A!=0:
mdot=A*Pt*M*sy.sqrt(gam/R/Tt)*(1+delta*M**2)**((gam+1)/(-2*(gam-1)))
return mdot
elif mdot!=0 and M!=0 and A==0:
Area=sy.Symbol ('Area', positive = True, real = True)
eq=mdot-Area*M*Pt*sy.sqrt(gam/R/Tt)*(1+delta*M**2)**((gam+1)/(-2*(gam-1)))
A=sy.nsolve (eq,Area,1)
return A
else:
return print("Wrong Values")
def run_finally(cls, cxn, parameters_dict, all_data, det):
print "switching the 866 back to ON"
cxn.pulser.switch_manual('866DP', True)
ident = int(cxn.scriptscanner.get_running()[-1][0])
print " sequence ident" , ident
all_data = np.array(all_data)
try:
all_data = all_data.sum(1)
except ValueError:
return
p = parameters_dict
duration = p.DriftTrackerRabi.line_2_pi_time
freq = np.pi/duration
ind1 = np.where(det == -1)
ind2 = np.where(det == 1)
det1 = det[ind1][0] * 2.39122444/p.DriftTrackerRabi.line_1_pi_time
det2 = det[ind2][0] * 2.39122444/p.DriftTrackerRabi.line_1_pi_time
p1 = all_data[ind1][0]
p2 = all_data[ind2][0]
print "at ",det1, " the pop is", p1
print "at ",det2, " the pop is", p2
from sympy import sin, symbols, nsolve
x = symbol('x')
relative_det_1 = nsolve(freq**2 / (freq**2 + (x + det1)**2) * (sin((freq**2 + (x - det1)**2)**0.5 * duration / 2))**2 - p1, 0)
relative_det_2 = nsolve(freq**2 / (freq**2 + (x + det2)**2) * (sin((freq**2 + (x - det2)**2)**0.5 * duration / 2))**2 - p2, 0)
detuning_2 = U((relative_det_1 + relative_det_2)/2, 'kHz')
print "detuning 2", (relative_det_1 + relative_det_2)/2
line_1 = p.DriftTracker.line_selection_1
line_2 = p.DriftTracker.line_selection_2
carr_1 = detuning_1_global+p.Carriers[carrier_translation[line_1]]
carr_2 = detuning_2+p.Carriers[carrier_translation[line_2]]
submission = [(line_1, carr_1), (line_2, carr_2)]
print "3243", submission
print carr_1
print carr_2
if p.DriftTrackerRabi.submit:
cxn.sd_tracker.set_measurements(submission)
import labrad
global_sd_cxn = labrad.connect(cl.global_address , password = cl.global_password, tls_mode='off')
print cl.client_name , "is sub lines to global SD"
print submission
global_sd_cxn.sd_tracker_global.set_measurements(submission, cl.client_name)
global_sd_cxn.disconnect()
def concave_triangle(area):
theta, n = symbols('theta n')
A = (1-cos(theta)) * (1-sin(theta)) / 2 + \
(2-cos(theta)) * sin(theta) / 2 - \
theta / 2
theta_ = nsolve(A - area, theta, 0.1)
# print(theta_)
n = nsolve((1 - sin(theta_)) - (1 - cos(theta_)) * n, n, 15)
return n
def error_bound(n):
e = Symbol('e')
y = Symbol('y')
growth_function_bound = generate_growth_function_bound(50)
a = original_vc_bound(n, 0.05, growth_function_bound)
b = nsolve(Eq(rademacher_penalty_bound(n, 0.05, growth_function_bound), y), 1)
c = nsolve(Eq(parrondo_van_den_broek_right(e, n, 0.05, growth_function_bound), e), 1)
d = nsolve(Eq(devroye(e, n, 0.05, growth_function_bound), e), 1)
return a, b, c, d
def error_bound(n):
e = Symbol('e')
y = Symbol('y')
growth_function_bound = generate_growth_function_bound(50)
a = original_vc_bound(n, 0.05, growth_function_bound)
b = nsolve(Eq(rademacher_penalty_bound(n, 0.05, growth_function_bound), y),
1)
c = nsolve(
Eq(parrondo_van_den_broek_right(e, n, 0.05, growth_function_bound), e),
1)
d = nsolve(Eq(devroye(e, n, 0.05, growth_function_bound), e), 1)
return a, b, c, d
def get_perm_lims(mesh):
med_perm_by_primal_1 = []
meshset_by_L2 = mesh.mb.get_child_meshsets(mesh.L2_meshset)
for m2 in meshset_by_L2:
meshset_by_L1 = mesh.mb.get_child_meshsets(m2)
for m1 in meshset_by_L1:
elem_by_L1 = mesh.mb.get_entities_by_handle(m1)
perm1 = mesh.mb.tag_get_data(
mesh.tags['PERM'], elem_by_L1).reshape([len(elem_by_L1), 9])
med1_x = sum(perm1[:, 0]) / len(perm1[:, 0])
med_perm_by_primal_1.append(med1_x)
med_perm_by_primal_1 = np.sort(med_perm_by_primal_1)
s = 1.0 #Parâmetro da secante
lg = np.log(med_perm_by_primal_1)
ordem = 11
print("fit")
fit = np.polyfit(range(len(lg)), lg, ordem)
x = sympy.Symbol('x', real=True, positive=True)
func = 0
for i in range(ordem + 1):
func += fit[i] * x**(ordem - i)
print("deriv")
derivada = sympy.diff(func, x)
inc_secante = (lg[-1] - lg[0]) / len(lg)
print("solve")
equa = sympy.Eq(derivada, 2 * inc_secante)
#real_roots=sympy.solve(equa)
ind_inferior = int(sympy.nsolve(equa, 0.1 * len(lg), verify=False))
if ind_inferior < 0:
ind_inferior = 0
ind_superior = int(sympy.nsolve(equa, 0.9 * len(lg), verify=False))
if ind_superior > len(lg) - 1:
ind_superior = len(lg) - 1
new_inc_secante = (lg[ind_superior] - lg[ind_inferior]) / (ind_superior -
ind_inferior)
eq2 = sympy.Eq(derivada, new_inc_secante)
new_ind_inferior = int(sympy.nsolve(eq2, ind_inferior, verify=False))
if new_ind_inferior < ind_inferior:
new_ind_inferior = ind_inferior
new_ind_superior = int(sympy.nsolve(eq2, ind_superior, verify=False))
if new_ind_superior > ind_superior:
new_ind_superior = ind_superior
ind_inferior = new_ind_inferior
ind_superior = new_ind_superior
val_barreira = med_perm_by_primal_1[ind_inferior]
val_canal = med_perm_by_primal_1[ind_superior]
return val_barreira, val_canal
def __init__(self, c=None, length=1, dim=3):
eta, L = sp.symbols('eta, length')
eta = sp.nsolve(c**2 * eta**2 - 2 * (1 - sp.cos(eta)), eta, -5)
W = c * L
X, Z = ligaro(W, eta)
# center at -cL/2,
R = L / eta
A = -0.5 * W
cx = A
cy = W * sp.sin(eta) / (2 * (1 - sp.cos(eta)))
self.eta = eta
self.radius = R.evalf(subs={L: 1})
self.center = [cx.evalf(subs={L: length}), cy.evalf(subs={L: length})]
x1, x2 = sp.symbols('x[0], x[1]')
gamma_sp = [None, None, None]
gamma_sp[0] = X
gamma_sp[1] = x2
gamma_sp[2] = Z
if dim == 2:
del gamma_sp[1]
self._build_geo(gamma_sp, length, x1, x2, dim)
def tilt_flame_rad_heat_pc(H, R, theta, rad_heat):
try:
Y_c = Symbol('Y_c')
#rad_heat=rad_heat
#R_c=0
#Example:
#H=20
#X=50
theta = theta / 180 * pi
a = H / R
b = Y_c / R
FV2=-(a*a*sin(theta)*cos(theta)/(4*pi*(b*b+a*a*sin(theta)*sin(theta))))*log((a*a+b*b-1-2*a*pow((b*b-1),0.5)*sin(theta)/b)/(a*a+b*b-1+2*a*pow((b*b-1),0.5)*sin(theta)/b))+cos(theta)/(2*pi*pow((b*b-sin(theta)*sin(theta)),0.5))\
*(atan((a*b/pow(b*b-1,0.5)+sin(theta))/(pow(b*b-sin(theta)*sin(theta),0.5)))+atan((a*b/pow(b*b-1,0.5)-sin(theta))/(pow(b*b-sin(theta)*sin(theta),0.5))))-a*b*cos(theta)/(pi*(b*b+a*a*sin(theta)*sin(theta)))\
*atan(pow(((b-1)/(b+1)),0.5))+(a*b*cos(theta)*(a*a+b*b+1))/(2*pi*(b*b+a*a*sin(theta)*sin(theta))*pow((pow(a*a+b*b+1,2)-4*(b*b+a*a*sin(theta)*sin(theta))),0.5))\
*(atan(((a*a+(b+1)*(b+1))*pow((b-1)/(b+1),0.5)-2*a*sin(theta))/(pow(((pow((a*a+b*b+1),2))-(4*(b*b+a*a*sin(theta)*sin(theta)))),0.5)))+atan(((a*a+(b+1)*(b+1))*pow((b-1)/(b+1),0.5)+2*a*sin(theta))/(pow(((pow((a*a+b*b+1),2))-(4*(b*b+a*a*sin(theta)*sin(theta)))),0.5))))
#This is for test:f_qv_r0=FV1-0.118
#for i in range(5):
func_qh_yc = FV2 * E - rad_heat
result = nsolve(
func_qh_yc, Y_c, R + 0.3
) # 20 is the initial guess, this is required for nsolve function
Y_c = result
#this is the Hazardous Radius (5 values)
print(Y_c)
return (Y_c)
except Exception as e:
return 0
traceback.print_exc()
def tilt_flame_rad_heat_pa(H, R, theta, rad_heat):
try:
X_a = Symbol('X_a')
#rad_heat=rad_heat
#Example:
#H=20
#X=50
theta = theta / 180 * pi
a = H / R
#b=X/R
b = X_a / R
x1 = a * a + (b + 1) * (b + 1) - 2 * a * (b + 1) * sin(theta)
x2 = a * a + (b - 1) * (b - 1) - 2 * a * (b - 1) * sin(theta)
FH1=atan(pow(((b+1)/(b-1)),0.5))/pi+sin(theta)/(pi*pow(1+(b*b-1)*cos(theta)*cos(theta),0.5))\
*((atan((a*b-(b*b-1)*sin(theta))/(pow((b*b-1),0.5)*pow((1+(b*b-1)*cos(theta)*cos(theta)),0.5))))+(atan(((b*b-1)*sin(theta))/(pow((b*b-1),0.5)*pow((1+(b*b-1)*cos(theta)*cos(theta)),0.5)))))\
-(a*a+(b+1)*(b+1)-2*(b+1+a*b*sin(theta)))/(pi*(pow(x1,0.5)*pow(x2,0.5)))\
*atan(pow(((a*a+(b+1)*(b+1)-2*a*(b+1)*sin(theta))/(a*a+(b-1)*(b-1)-2*a*(b-1)*sin(theta))),0.5)*pow(((b-1)/(b+1)),0.5))
#This is for test:f_qv_r0=FV1-0.118
func_qh_xa = FH1 * E - rad_heat
result = nsolve(
func_qh_xa, X_a, R + 0.3
) # 20 is the initial guess, this is required for nsolve function
X_a = result
#this is the Hazardous Radius (5 values)
# print(X_a)
return (X_a)
except Exception as e:
return 0
def locate(self,times,exclude):
"""locate(t,exclude)
input: list-of-times in microseconds
and what to exclude in calculations
output (x, y) in meters
"""
sos = 340.2;
times = times[:];
pts = self.sensors[:];
del pts[exclude];
del times[exclude];
x,y,t = sympy.symbols('x y t');
a,b = pts[0];
c,d = pts[1];
e,f = pts[2];
#print(a,b,c,d,e,f);
t_1 = mpf(times[0])/1e6;
t_2 = mpf(times[1])/1e6;
t_3 = mpf(times[2])/1e6;
#t_1,t_2,t_3 = 0,t_2-t_1,t_3-t_1;
f_1 = (x-a)**2 + (y-b)**2 - ((t_1-t)*sos)**2;
f_2 = (x-c)**2 + (y-d)**2 - ((t_2-t)*sos)**2;
f_3 = (x-e)**2 + (y-f)**2 - ((t_3-t)*sos)**2;
try:
res = sympy.nsolve((f_1,f_2,f_3),(x,y,t),(0,0,min(t_1,t_2,t_3)));
return ( float(res[0]), float(res[1]) );
except(ValueError,ZeroDivisionError):
return ( float('NaN'), float('NaN') );
def calculate(args):
'''For 20 values of n, set vals[n] to float representation of eigenvalue
and set funcs[n] to corresponding eigenfunction with lambda as free
variable.
'''
from first import LO
if len(vals) != 0:
return
t, lam = sympy.symbols('t lam'.split())
old = 1.0
delta = 0
ns = np.arange(1, args.n_calculate)
for n in ns:
T = 1.0 / n
A = LO(T, 1.0 / 3000)
A.power(op=A.matvec, small=1.0e-8)
vals_n[n] = A.eigenvalue
funcs_n[n] = A.eigenvector
F = Piecewise(n)
funcs[n] = F
new_ = sympy.nsolve(lam - F.integrate(), lam, old + delta)
vals[n] = new_
delta = new_ - old
old = new_
print('For n={0:d}, lambda={1}, delta={2}'.format(n, new_, delta))
def solve_equation(x, y, d):
# Równanie powiędzy 1 i 2
f1 = sympy.sqrt(np.abs((x[1] - a)**2 - (y[1] - b)**2)) - sympy.sqrt(
np.abs((x[0] - a)**2 - (y[0] - b)**2)) - d[0]
# Równanie powiędzy 1 i 3
f2 = sympy.sqrt(np.abs((x[2] - a)**2 - (y[2] - b)**2)) - sympy.sqrt(
np.abs((x[0] - a)**2 - (y[0] - b)**2)) - d[1]
# Równanie powiędzy 2 i 3
f3 = sympy.sqrt(np.abs((x[2] - a)**2 - (y[2] - b)**2)) - sympy.sqrt(
np.abs((x[1] - a)**2 - (y[1] - b)**2)) - d[2]
x_dz = []
y_dz = []
while len(x_dz) < 10:
pp1 = np.random.uniform(x[0] - 5, x[2] + 5)
pp2 = np.random.uniform(y[0] - 5, y[2] + 5)
try:
p, q = nsolve((f1, f2, f3), (a, b), (pp1, pp2), verify=False)
if abs(p) < 10 and (0 < -q < 10):
x_dz.append(p)
y_dz.append(q)
except:
pass
print(x_dz)
print(y_dz)
return np.median(x_dz), np.median(y_dz)
def neutral_axis_MN(M, N, b, d, d1, d2, As, As1, n=15):
"presso-flessione"
d0 = M/N - (d+d1)/2
x = sp.symbols('x')
eq = 1/6*b*x**3 + 1/2*b*d0*x**2 + (n*As1*(d0+d2) + n*As*(d0+d))*x - n*As1*d2*(d0+d2) - n*As*d*(d0+d)
sol = sp.nsolve(eq, x, d/2, dict=True)[0][x] #d/2 is the starting point
return sol
def tangent_intersection(p, yq_pos):
"""
calculate and return the value of the tangent-intersection coordinates
(xq, yq) of the line through (xp, yp) with the curve.
the easiest way to find the tangent point (q) of the line which passes
through point p is to equate the two different slope equations:
1) m = 3xq^2 / 2yq
2) m = (yp - yq) / (xp - xq)
(1) is the tangent slope and (2) is the non-tangent slope. we can use these
equations to solve for xq, knowing that:
yq = [+/-]sqrt(xq^3 + 7)
where + or - is determined by the input variable yq_pos. note that it is a
very difficult (impossible?) equation to solve for certain values of p, so
we will solve numerically.
this function works best if you pick an xp value between cuberoot(-7) and
-0.5. for xp values outside this range you will need to adjust the numerical
solver function - ie pick a different starting point and algorythm.
"""
(xp, yp) = p
if float(xp) < -7**(1 / 3.0):
raise ValueError("xp must be greater than cuberoot(-7)")
xq = sympy.symbols("xq")
yq = y_ec(xq, yq_pos)
q = (xq, yq)
m1 = tan_slope(q)
m2 = non_tan_slope(p, q)
# solve numerically, and start looking for solutions at xq = 0
xq = float(sympy.nsolve(m1 - m2, xq, 0))
return (xq, y_ec(xq, yq_pos))
def x_boundary(self):
x = self.x
x_value = self.x_value
s_boundary = self.s_boundary()
s = self.ProblemSettings.s(x)
f = np.ndarray((
2,
len(x),
), 'object')
for i in range(2):
for j in range(len(x)):
f[i][j] = s[j] - s_boundary[i][j]
x_boundary = np.ndarray((
2,
len(x),
))
for i in range(2):
for j in range(len(x)):
x_boundary[i][j] = syp.nsolve((f[i][0], f[i][1]), \
(x[0], x[1]), \
(x_value[0], x_value[1]) \
)[j]
return x_boundary
def eta_fil(self, x, V_app, apprx=(0, 0, 0, 0)):
m_eff = self.m_r * const.electron_mass
mpmath.mp.dps = 20
x0 = Symbol('x0') # eta_fil
x1 = Symbol('x1') # eta_ac
x2 = Symbol('x2') # eta_hop
x3 = Symbol('x3') # V_tunnel
f0 = const.Boltzmann * self.T / (1 - self.alpha) / const.elementary_charge / self.z * \
ln(self.A_fil/self.A_ac*(exp(- self.alpha * const.elementary_charge * self.z / const.Boltzmann / self.T * x0) - 1) + 1) - x1# eta_ac = f(eta_fil) x1 = f(x0)
f1 = x*2*const.Boltzmann*self.T/self.a/self.z/const.elementary_charge*\
asinh(self.j_0et/self.j_0hop*(exp(- self.alpha * const.elementary_charge * self.z / const.Boltzmann / self.T * x0) - 1)) - x2# eta_hop = f(eta_fil)
f2 = x1 - x0 + x2 - x3
f3 = -V_app + ((self.C * 3 * sqrt(2 * m_eff * ((4+x3/2)*const.elementary_charge)) / 2 / x * (const.elementary_charge / const.Planck)**2 * \
exp(- 4 * const.pi * x / const.Planck * sqrt(2 * m_eff * ((4+x3/2)*const.elementary_charge))) * self.A_fil*x3)
+ (self.j_0et*self.A_fil*(exp(-self.alpha*const.elementary_charge*self.z*x0/const.Boltzmann/self.T) - 1))) * (self.R_el + self.R_S + self.rho_fil*(self.L - x) / self.A_fil) \
+ x3
eta_fil, eta_ac, eta_hop, V_tunnel = nsolve((f0, f1, f2, f3), [x0, x1, x2, x3], apprx)
eta_fil = np.real(np.complex128(eta_fil))
eta_ac = np.real(np.complex128(eta_ac))
eta_hop = np.real(np.complex128(eta_hop))
V_tunnel = np.real(np.complex128(V_tunnel))
current = ((self.C * 3 * sqrt(2 * m_eff * ((4+V_tunnel)*const.elementary_charge)) / 2 / x * (const.elementary_charge / const.Planck)**2 * \
exp(- 4 * const.pi * x / const.Planck * sqrt(2 * m_eff * ((4+V_tunnel)*const.elementary_charge))) * self.A_fil*V_tunnel)
+ (self.j_0et*self.A_fil*(exp(-self.alpha*const.elementary_charge*self.z*eta_fil/const.Boltzmann/self.T) - 1)))
print(eta_fil, eta_ac, eta_hop, V_tunnel)
# print(eta_ac - eta_fil + eta_hop - V_tunnel)
return eta_fil, eta_ac, eta_hop, V_tunnel, current
def equations(self, point_pairs, is_less):
"""
以一条线段作为直角三角形的一条边，从这条线段的起点向该线段引一条距离为d的垂线，
用垂线的另一点和该线段组成一个直角三角形，这个垂线上的另一点即为要扩展的轮廓的一点
用以下两个方程组成二元二次方程组，求解可获得这点坐标
① 直角,向量法.（x-x1)(x2-x1)+(y-y1)(y2-y1)=0
② L,两点距离公式.（x-x1)²+(y-y1)²=l²
解二元二次方程
:param point_pairs:直角三角形的一条直角边
:param is_less:初值的x坐标值是否大于直角边起点的x坐标值
:return:返回一个解（x,y)
:rtype: object
"""
try:
x1 = point_pairs[0][0]
y1 = point_pairs[0][1]
x2 = point_pairs[1][0]
y2 = point_pairs[1][1]
deta = 0.05
if is_less:
init_pairs = [x1 - deta, y1]
else:
init_pairs = [x1 + deta, y1]
x = Symbol('x')
y = Symbol('y')
func = [(x2 - x1) * (x - x1) + (y2 - y1) * (y - y1),
(x - x1)**2 + (y - y1)**2 - self.d**2]
return nsolve(func, [x, y], init_pairs)
except Exception as err:
return None
def eta_fil(self, x, V_app, apprx=(0, 0, 0, 0)):
m_eff = self.m_r * const.electron_mass
mpmath.mp.dps = 20
x0 = Symbol('x0') # eta_fil
x1 = Symbol('x1') # eta_ac
x2 = Symbol('x2') # eta_hop
x3 = Symbol('x3') # V_tunnel
f0 = const.Boltzmann * self.T / (1 - self.alpha) / const.elementary_charge / self.z * \
ln(self.A_fil/self.A_ac*(exp(- self.alpha * const.elementary_charge * self.z / const.Boltzmann / self.T * x0) - 1) + 1) - x1# eta_ac = f(eta_fil) x1 = f(x0)
f1 = x*2*const.Boltzmann*self.T/self.a/self.z/const.elementary_charge*\
asinh(self.j_0et/self.j_0hop*(exp(- self.alpha * const.elementary_charge * self.z / const.Boltzmann / self.T * x0) - 1)) - x2# eta_hop = f(eta_fil)
f2 = x1 - x0 + x2 - x3
f3 = -V_app + ((self.C * 3 * sqrt(2 * m_eff * ((4+x3/2)*const.elementary_charge)) / 2 / x * (const.elementary_charge / const.Planck)**2 * \
exp(- 4 * const.pi * x / const.Planck * sqrt(2 * m_eff * ((4+x3/2)*const.elementary_charge))) * self.A_fil*x3)
+ (self.j_0et*self.A_fil*(exp(-self.alpha*const.elementary_charge*self.z*x0/const.Boltzmann/self.T) - 1))) * (self.R_el + self.R_S + self.rho_fil*(self.L - x) / self.A_fil) \
+ x3
eta_fil, eta_ac, eta_hop, V_tunnel = nsolve((f0, f1, f2, f3),
[x0, x1, x2, x3], apprx)
eta_fil = np.real(np.complex128(eta_fil))
eta_ac = np.real(np.complex128(eta_ac))
eta_hop = np.real(np.complex128(eta_hop))
V_tunnel = np.real(np.complex128(V_tunnel))
current = ((self.C * 3 * sqrt(2 * m_eff * ((4+V_tunnel)*const.elementary_charge)) / 2 / x * (const.elementary_charge / const.Planck)**2 * \
exp(- 4 * const.pi * x / const.Planck * sqrt(2 * m_eff * ((4+V_tunnel)*const.elementary_charge))) * self.A_fil*V_tunnel)
+ (self.j_0et*self.A_fil*(exp(-self.alpha*const.elementary_charge*self.z*eta_fil/const.Boltzmann/self.T) - 1)))
print(eta_fil, eta_ac, eta_hop, V_tunnel)
# print(eta_ac - eta_fil + eta_hop - V_tunnel)
return eta_fil, eta_ac, eta_hop, V_tunnel, current
def get_selu_parameters(fixed_point_mean=0.0, fixed_point_var=1.0):
""" Finding the parameters of the SELU activation function. The function returns alpha and lambda for the desired
fixed point. """
aa = Symbol('aa')
ll = Symbol('ll')
nu = fixed_point_mean
tau = fixed_point_var
mean = 0.5 * ll * (
nu + np.exp(-nu**2 / (2 * tau)) * np.sqrt(2 / np.pi) * np.sqrt(tau) +
nu * erf(nu / (np.sqrt(2 * tau))) -
aa * erfc(nu / (np.sqrt(2 * tau))) + np.exp(nu + tau / 2) * aa * erfc(
(nu + tau) / (np.sqrt(2 * tau))))
var = 0.5 * ll**2 * (
np.exp(-nu**2 /
(2 * tau)) * np.sqrt(2 / np.pi * tau) * nu + (nu**2 + tau) *
(1 + erf(nu / (np.sqrt(2 * tau)))) + aa**2 * erfc(nu /
(np.sqrt(2 * tau))) -
aa**2 * 2 * np.exp(nu + tau / 2) * erfc(
(nu + tau) /
(np.sqrt(2 * tau))) + aa**2 * np.exp(2 * (nu + tau)) * erfc(
(nu + 2 * tau) / (np.sqrt(2 * tau)))) - mean**2
eq1 = mean - nu
eq2 = var - tau
res = nsolve((eq2, eq1), (aa, ll), (1.67, 1.05))
return float(res[0]), float(res[1])
def fit_curv(cheb_polynom, age_lb, age_ub):
age = sympy.Symbol("age")
b = sympy.Symbol("b")
c = sympy.Symbol("c")
d = sympy.Symbol("d")
g = sympy.exp(b * (age)**2 + c * (age) + d)
g_dif = sympy.diff(g, age)
cheb_dif = sympy.diff(cheb_polynom)
eq1 = cheb_polynom.subs(age, age_lb) - g.subs(age, age_lb)
eq2 = cheb_dif.subs(age, age_lb) - g_dif.subs(age, age_lb)
eq3 = g_dif.subs(age, age_ub) + 0.05
# Using 0 as initial guesses, not sure whether they work for other cases
sols = sympy.nsolve([eq1, eq2, eq3], [b, c, d], [0, 0, 0])
sol_b = sols[0, :][0, 0]
sol_c = sols[1, :][0, 0]
sol_d = sols[2, :][0, 0]
g_sol = g.subs([(b, sol_b), (c, sol_c), (d, sol_d)])
f = lambdify(age, g_sol)
age_bins = np.arange(age_lb, age_ub + 1)
fit_values = f(age_bins)
return fit_values
def calculateTemp(cc, rlc, rse, asw, asc, rsm, a03, alc, rsc, alw, eps_a, sigma, eps_e, ps0, f, alpha, beta):
#atmosfære-koeffs
refl_sw = (1-cc)*rsm + cc*rsc # vektet refl for mol og sky
abs_sw = ((1-cc)*(0.5*asw + 0.5*a03) + cc*asc)
refl_lw = cc*rlc
abs_lw = ((1-cc)*alw + cc*alc) # vektet abs for molekyl og sky ganger
#---------------Ledd for likning 1---------------------------#
Pae = eps_a * sigma * x**4
Pea_refl = refl_lw * eps_e * sigma * y**4
# Psa_trans = ps0*(1-(asw+rsm))*(1-(a03+rsm))*(1-cc*(asc+rsc)) #3 -lags
Psa_trans = (1-abs_sw) * (1-refl_sw) * ps0
Pse_refl = Psa_trans * rse
Pea_em = eps_e * sigma * y**4
Pea_hl = -(alpha+beta)*(x-y)
Pse_refl2 = Pse_refl * refl_sw
# Equation 1
eq1 = Pae + Pea_refl + Psa_trans - Pse_refl - Pea_hl - Pea_em + Pse_refl2
# Ledd for likning 2
Ps0 = ps0
Psa_refl = ps0 * refl_sw
Pea_trans = Pea_em*(1-abs_lw)*(1-refl_lw)
Pas = f*eps_a*sigma*x**4
Pse_refl_trans = Pse_refl * (1-abs_sw) * (1-refl_sw)
# Equation 2
eq2 = - Ps0 + Psa_refl + Pea_trans + Pas + Pse_refl_trans
los = nsolve((eq1, eq2), (x, y), (320, 350))
return [los[0],los[1]]
def calculate(args):
'''For 20 values of n, set vals[n] to float representation of eigenvalue
and set funcs[n] to corresponding eigenfunction with lambda as free
variable.
'''
from first import LO
if len(vals) != 0:
return
t,lam = sympy.symbols('t lam'.split())
old = 1.0
delta = 0
ns = np.arange(1, args.n_calculate)
for n in ns:
T = 1.0/n
A = LO(T, 1.0/3000)
A.power(op=A.matvec, small=1.0e-8)
vals_n[n] = A.eigenvalue
funcs_n[n] = A.eigenvector
F = Piecewise(n)
funcs[n] = F
new_ = sympy.nsolve(lam-F.integrate(), lam, old+delta)
vals[n] = new_
delta = new_ - old
old = new_
print('For n={0:d}, lambda={1}, delta={2}'.format(n,new_,delta))
def allroots(expr, degree, prec, chop=True):
roots = set()
start = random.random() + random.random()*I
MAX_ITERATIONS = 5*degree
i = 0
while len(roots) < degree:
i += 1
if i > MAX_ITERATIONS:
raise RuntimeError("MAX_ITERATIONS exceeded. Could only find %s roots" % len(roots))
try:
r = nsolve(expr/Mul(*[t - r for r in roots]), start,
maxsteps=1.7*prec, prec=prec)
except ValueError:
start = 10*(random.random() + random.random()*I)
else:
roots.add(r)
# Because we started with a complex number, real roots will have a small
# complex part. Assume that the roots with the smallest complex parts are
# real. We could also check which roots are conjugate pairs.
if chop:
from sympy.core.compatibility import GROUND_TYPES
if GROUND_TYPES == 'python':
warnings.simplefilter('default')
warnings.warn("It is recommended to install gmpy2 to speed up transmutagen")
n_real_roots = count_roots(nsimplify(expr))
roots = sorted(roots, key=lambda i:abs(im(i)))
real_roots, complex_roots = roots[:n_real_roots], roots[n_real_roots:]
real_roots = [re(i) for i in real_roots]
roots = {*real_roots, *complex_roots}
return roots
def get_S95(b0, sigma):
S95 = sy.Symbol('S95', positive=True, real=True)
b = sy.Symbol('b', positive=True)
chi21 = sy.Symbol('chi21')
chi22 = sy.Symbol('chi22')
chi2 = 3.84
N = b0
replacements = [(b, (b0 - S95 - sigma**2) / 2 + 1. / 2 *
((b0 - S95 - sigma**2)**2 + 4 *
(sigma**2 * N - S95 * sigma**2 + S95 * b0))**0.5)]
replacements2 = [(S95, 0.)]
chi21 = -2 * (N * sy.log(S95 + b) - (S95 + b) - ((b - b0) / sigma)**2)
chi21 = chi21.subs(replacements)
chi22 = chi21.subs(replacements2)
eq = chi2 - chi21 + chi22
S95_new = sy.nsolve(eq, S95, 1)
return float(S95_new)
def area_calc(r1, r2):
# convert r1 and r2 from the main program in meters to inches for the calculation
r1 = r1 * 100 / 2.54
r2 = r2 * 100 / 2.54
# ISO 160 pipe dia in inches
pipedia = 5.83
a1 = pi * r1**2
asm = pi * ((pipedia / 2)**2)
# d is the distance between the center points of the two circles
# d1 is the distance from the origin to the intersection point
def d1(d):
return (r1**2 - r2**2 + d**2) / (2 * d)
# d2 is the distance from the intersection point to the center of circle 2
def d2(d):
return d - d1(d)
# t is defined but not used (used in main program as pipethickcheck) used for debugging at one point
def t(d):
return r1 - r2 + d
# a(d) is the area of the crescent shape
def a(d):
return a1 - r1**2 * acos(
d1(d) / r1) + d1(d) * sqrt(r1**2 - d1(d)**2) - r2**2 * acos(
d2(d) / r2) + d2(d) * sqrt(r2**2 - d2(d)**2)
# Solve for the height of the second circle above the x-axis assuming the are is the same
x = symbols('x', real=True)
h = re(nsolve(a(x) - asm, x, 10))
# print(t(h))
# Solve for the intersection angles assuming h is the height of the 2nd circle above the x-axis
ang = symbols('ang')
th = nsolve(r1 - h * sin(ang) - sqrt(h**2 * sin(ang)**2 - h**2 + r2**2),
ang, 2)
hmeter = h * 2.54 / 100
# return this angle and height to the main program
return th, hmeter
def solve(self, guess, **kwargs):
guess = tuple(guess)
try:
abc = sp.nsolve(self.equation_set, self.variables, guess, **kwargs)
except ValueError:
# non convergence of solver
abc = [None] * len(guess)
return np.array(abc, dtype=np.float)
def ytm(ytm=None, fv=None, cpn=None, n=None, p=None, should_round=True):
"""Converts between present money and future money taking into account interest rates and years past.
ytm: Yield to maturity.
fv: future value including coupon payments and payout.
cpn: coupon payment amount in dollars.
n: number of coupon payment periods.
p: Current market price.
"""
global FORMULAS
name = 'ytm'
# generate all rearrangements of the given expression
if name not in FORMULAS:
_ytm, _fv, _cpn, _p, _n = sympy.symbols("ytm fv cpn p n")
p_expr = _cpn * (1 / _ytm) * (1 - (1 /
(1 + _ytm)**_n)) + (_fv /
(1 + _ytm)**_n)
FORMULAS[name] = all_functions(_p, p_expr, [_ytm, _fv, _cpn, _n, _p])
# insist on the right number of arguments
supplied = sum(1 if v is not None else 0 for v in (ytm, fv, cpn, n, p))
if supplied != 4:
raise Exception("Invalid number of arguments")
if ytm is None:
ret = FORMULAS[name]['p'].equation.subs({
'p': p,
'cpn': cpn,
'n': n,
'fv': fv
})
rets = []
for i in range(1000):
try:
rets.append(
sympy.nsolve(ret, sympy.Symbol("ytm"), (i + 1) / 1000))
except ValueError:
pass
finally:
pass
logging.debug(rets)
ret = [rets[0], "YTM"]
elif fv is None:
ret = [FORMULAS[name]['fv'](ytm=ytm, cpn=cpn, n=n, p=p), "FV"]
elif cpn is None:
print(FORMULAS[name]['cpn'].equation)
ret = [FORMULAS[name]['cpn'](ytm=ytm, fv=fv, n=n, p=p), "CPN"]
elif n is None:
ret = [FORMULAS[name]['n'](ytm=ytm, fv=fv, cpn=cpn, p=p), "n"]
elif p is None:
ret = [FORMULAS[name]['p'](ytm=ytm, fv=fv, cpn=cpn, n=n), "P"]
else:
print("You supplied all the arguments, there's nothing to calculate")
return None
if should_round:
ret[0] = round(ret[0], RESULT_PRECISION)
return ret
def queuing_model(x, q):
'''x : variable de contrôle array taille M
renvoie le y associé à x par le queuing model'''
mu = calc_mu(x)
var = []
eqn = []
for i in range(N):
lambda_eff = symbols('lambda{}'.format(i))
rho_eff = symbols('rho{}'.format(i))
P = symbols('P{}'.format(i))
var.append(lambda_eff)
var.append(rho_eff)
var.append(P)
for i in range(N):
lambda_eff = var[3 * i]
rho_eff = var[3 * i + 1]
P = var[3 * i + 2]
gamma = q[1][i][1]
k = q[1][i][0]
eqn1 = -lambda_eff + gamma * (1 - P)
for j in range(N):
eqn1 += q[0][j][i] * var[3 * j]
eqn2 = -rho_eff + lambda_eff / mu[i]
S1 = 0
S2 = 0
for j in range(N):
p = q[0][i][j]
S1 += p * var[3 * j + 2]
if (p != 0):
S2 += var[3 * j + 1]
eqn2 += S1 * S2
eqn3 = -P + (1 - rho_eff) / (1 - rho_eff**(k + 1)) * rho_eff**k
eqn.append(eqn1)
eqn.append(eqn2)
eqn.append(eqn3)
y0 = np.array([0] * (3 * N))
sol = nsolve(eqn, var, y0)
y = np.zeros((N, 3))
for i in range(N):
y[i][0] = sol[3 * i]
y[i][1] = sol[3 * i + 1]
y[i][2] = sol[3 * i + 2]
return y
def compute_mus():
def reduce_mu():
omega = [e0 - sum([mu[site_mu_map[i]]*sum(c0[i,:]) for i in range(n)])]
x = solve(omega)
return x
# Compute trial mu
mu_red = reduce_mu()
#print mu_red
mult = multiplicity
#for ind in specie_site_index_map:
# print ind[0], ind[1]
specie_concen = [sum(mult[ind[0]:ind[1]]) for ind in specie_site_index_map]
#print 'specie_concent', specie_concen
y_vect = [specie_concen[-1]/specie_concen[i] for i in range(m)]
#print 'y_vect', y_vect
vector_func = [y_vect[i]-c_ratio[i] for i in range(m-1)]
vector_func.append(omega)
#print vector_func
#vector_func.append(mu_equalities)
#print 'y0', y0
min_diff = 1e10
mu_vals = None
c_val = None
m1_min = -20.0
if e0 > 0:
m1_max = 10 # Search space needs to be modified
else:
m1_max = 0
for m1 in np.arange(m1_min,m1_max,0.1):
m0 = mu_red[mu[0]].subs(mu[-1],m1)
try:
x = nsolve(vector_func,mu,[m0,m1],module="numpy")
# Line needs to be modified to include all mus when n > 2
except:
continue
c_val = c.subs(dict(zip(mu,x)))
#print c_val
#if all(x >= 0 for x in c_val):
specie_concen = []
for ind in specie_site_index_map:
specie_concen.append(sum([sum(c_val[i,:]) for i in range(*ind)]))
y_comp = [specie_concen[-1]/specie_concen[i] for i in range(m)]
diff = math.sqrt(sum([pow(abs(y_comp[i]-y_vect[i]),2) for i in range(m)]))
if diff < min_diff:
min_diff = diff
mu_vals = x
if mu_vals:
mu_vals = [float(mu_val) for mu_val in mu_vals]
else:
raise ValueError()
print mu_vals
return mu_vals
def find_eigenvalues_sympy(self, scatter_eigenvalues, start=None):
"""
ToDo: Get the execution time to a finite value for channels >= 5.
In the moment this function only supports small number of channels.
Sympy has some problems when the number of channels gets higher.
Use find_eigenvalues_v2, that is more stable.
>>> import pytest; pytest.skip('Bingham is to slow')
>>> import sympy
>>> trainer = ComplexBinghamTrainer(2)
>>> trainer.find_eigenvalues_sympy([0.9, 0.1])
array([[ 0. ],
[-9.99544094]])
>>> trainer.grad_log_norm([0.9, 0.1])
array([0.56596622, 0.43403378])
>>> trainer.grad_log_norm([0., -9.99544094])
array([0.9, 0.1])
>>> trainer.grad_log_norm([0. + 10, -9.99544094 + 10])
array([0.9, 0.1])
# >>> ComplexBinghamDistribution.estimateParameterMatrix([0.9, 0, 0; 0, 0.06, 0; 0, 0, 0.04])
>>> trainer = ComplexBinghamTrainer(3)
>>> trainer.find_eigenvalues_sympy([0.9, 0.06, 0.04])
array([[ 0. ],
[-16.59259207],
[-24.95061675]])
>>> trainer.find_eigenvalues_sympy([0.9, 0.05, 0.05])
array([[ 0. ],
[-19.93827431],
[-19.93827213]])
"""
inverse_permutation, scatter_eigenvalues = ComplexBingham._remove_duplicate_eigenvalues(
np.array(scatter_eigenvalues))
import sympy
out_to_solve = [
sympy.simplify(o - i)
for o, i in zip(self.grad_log_norm_symbolic, scatter_eigenvalues)
]
if start is None:
# The Complex Bingham Distribution and Shape Analysis
# Eq. (3.3)
start = list(-1 / np.array(scatter_eigenvalues))
result = sympy.nsolve(out_to_solve,
self.eigenvalues_symbol,
start,
tol=1e-6)
res = np.array(result.tolist()).astype(np.float64)
res = res - np.amax(res)
return res[inverse_permutation]
def stone(A,F,C,L,rho):
""" computation of stoneley velocity """
x = symbols('x')
seq = x + (((x-L)/(x-A))**.5)*((C*(x-A)+F**2)/(C*L)**.5)
sol = nsolve(seq,0)
csol = N(sol,n=12, chop=True)
check = seq.subs(x,csol)
velocity = (csol/rho)**.5
return(csol,check,velocity)
def bug_not_high_precision():
var('g', positive=True)
f = -48*asin(sqrt(2)/sqrt(-g**2 + 4)) - 48*asin(1/sqrt(-g**2 + 4)) + 24*pi
assert 0 == nsimplify(f.subs(g,1))
sympy.mpmath.mp.dps = 100
x = nsolve(f, g, 1)
'''str(x)='0.99...' or "mpf('0.99...')" '''
return '0.9999999999999990760' in str(x)
assert str(x)[6:][:21] == '0.9999999999999990760'
assert '0.9999999999999990760' in str(x)
def paper_cram_error(degree, t0, prec=200):
from ..partialfrac import t, customre
from sympy import re, exp, nsolve, diff
paper_part_frac = get_paper_part_frac(degree).replace(customre, re)
E = paper_part_frac - exp(-t)
return E.subs(t, nsolve(diff(E, t), t0, prec=prec))
def e_val(tau, start=None):
'''Calculate approximate eigenvalue using eq:2
'''
t, lam = sympy.symbols('t lam'.split())
f = t - lam * sympy.exp((t - 1) / lam)
f_tau = f.subs(t, tau)
if start == None:
start = tau
rv = sympy.nsolve(f_tau, lam, start) #, tol=1e-8)
return rv
def e_val(tau, start=None):
'''Calculate approximate eigenvalue using eq:2
'''
t,lam = sympy.symbols('t lam'.split())
f = t - lam*sympy.exp((t-1)/lam)
f_tau = f.subs(t,tau)
if start == None:
start = tau
rv = sympy.nsolve(f_tau, lam, start)#, tol=1e-8)
return rv
def ellipse_points(a,b,R,precision=0.2*math.pi/180, step_R=0.1,plot=True):
"""
Function ellipse_points finds points on an ellipse equaly spaced
Arguments:
1. a: semi-major axis of the ellipse
2. b: semi-minor axis of the ellipse
3. R: spacing between points
Optional arguments:
4. precision: the precision in radians on spacing
5. step_R: the step in spacing between each iteration
"""
x = Symbol('x')
y = Symbol('y')
ellipse = (x/a)**2 + (y/b)**2 - 1
t_final=math.pi/2
iter_nb=0
continue_loop = True
while continue_loop:
iter_nb += 1
if iter_nb > 1:
print('Iterations: {0:.0f}, deviation at final position {1:4.2f} degrees'.format(iter_nb-1,(t-t_final)*180/math.pi))
t=0 #math.pi/10
x_sol=[a*math.cos(t)]
y_sol=[b*math.sin(t)]
t_sol=[t]
while t < t_final-precision:
x0 = a*math.cos(t)
y0 = b*math.sin(t)
cercle = (x-x0)**2 + (y-y0)**2 -R**2
trynextguess=True
nbguessiter=0
while (trynextguess and nbguessiter < 10):
try:
derivative= [-a*math.sin(t),b*math.cos(t)]
direction = R/np.linalg.norm(derivative)*np.array(derivative)
guess = np.array([x0,y0])+direction
sol=nsolve((ellipse,cercle), (x, y), (guess[0],guess[1]))
trynextguess=False
except ValueError,e:
nbguessiter += 1
print(e)
print('Initial guess changed. We retry: {0:4.0f} iterations'.format(
nbguessiter))
t+=math.atan(R/4/a)
#print(sol)
t = math.acos(float(sol[0])/a)
t_sol.append(t)
x_sol.append(a*math.cos(t))
y_sol.append(b*math.sin(t))
if math.fabs(t-t_final) < precision:
continue_loop = False
else:
R-=step_R
def get_cut_model_probs(etas,interactions,k,use_scipy=True,method='hybr',seed=0):
dim = len(interactions.keys()[0])
etasKeys = filter(lambda keys: sum(keys) <= k, etas.keys())
intsKeys = filter(lambda keys: sum(keys) > k,interactions.keys())
def getPaddedBinaries(ints,minL):
padStr = reduce(lambda x,y:x+y,['0' for i in range(minL)])
binaries = [bin(i)[2:] for i in ints]
return map(lambda binStr: padStr[:minL-len(binStr)]+binStr,binaries)
varStrings = ['p'+binStr for binStr in getPaddedBinaries(xrange(2**dim),dim)]
varSymbols = [S(varStr) for varStr in varStrings]
eqs = []
# all probabilities should sum to 1
eqs.append('('+reduce(lambda x,y: x+'+'+y,varStrings)+'-1)')
# for each marginal, add a constraint for the sum of all patterns containing the marginal indices
for etaKey in etasKeys:
zeroIdxs = filter(lambda i: etaKey[i]==0,range(dim))
containingPatternsFlips = subsets(set(zeroIdxs))
containingPatterns = map(lambda idxs: 'p'+reduce(lambda x,y: str(x)+str(y),idxs),map(lambda flipIdxs: flip(etaKey,flipIdxs),containingPatternsFlips))
eqs.append('('+reduce(lambda x,y: x+'+'+y,containingPatterns)+'-{0})'.format(etas[etaKey]))
# for each interaction, add a constraint
for intKey in intsKeys:
oneIdxs = filter(lambda i: intKey[i]==1,range(dim))
subPatternFlips = subsets(set(oneIdxs))
subPatterns = [flip(intKey,flipIdxs) for flipIdxs in subPatternFlips]
expr = '(1.0'
for i,pattern in enumerate(subPatterns):
patternId = 'p'+reduce(lambda x,y: str(x)+str(y),pattern)
if len(subPatternFlips[i]) % 2 ==0:
expr = expr+'*{0}'.format(patternId)
else:
expr = expr+'/{0}'.format(patternId)
eqs.append(expr+'-{0})'.format(np.exp(interactions[intKey])))
exprs = tuple([sympify(eq) for eq in eqs])
if use_scipy:
from scipy.optimize import root,fmin_tnc,minimize,fsolve
evaluators = [lambdify(tuple(varSymbols),expr) for expr in exprs]
def objective_fun(x0):
return np.array([evaluator(*x0) for evaluator in evaluators])
np.random.seed(seed)
x0 = np.random.rand(2**dim)/2**(dim-1)
x0 = x0/np.sum(x0)
res,idict,c,d=fsolve(objective_fun, x0,full_output=True)#,method=method)
return res,idict,c,d
else:
res = nsolve(exprs,tuple(varSymbols),tuple([1.0/2**dim for _ in xrange(2**dim)]))
return np.array(([float(r) for r in res]))
def run_finally(cls, cxn, parameters_dict, all_data, det):
print "switching the 866 back to ON"
cxn.pulser.switch_manual('866DP', True)
ident = int(cxn.scriptscanner.get_running()[-1][0])
print " sequence ident" , ident
all_data = np.array(all_data)
try:
all_data = all_data.sum(1)
except ValueError:
return
p = parameters_dict
duration = p.DriftTrackerRabi.line_1_pi_time
freq = np.pi/duration
ind1 = np.where(det == -1)
ind2 = np.where(det == 1)
det1 = det[ind1][0] * 2.39122444/p.DriftTrackerRabi.line_1_pi_time
det2 = det[ind2][0] * 2.39122444/p.DriftTrackerRabi.line_1_pi_time
p1 = all_data[ind1][0]
p2 = all_data[ind2][0]
print "at ",det1, " the pop is", p1
print "at ",det2, " the pop is", p2
from sympy import sin, symbols, nsolve
x = symbol('x')
relative_det_1 = nsolve(freq**2 / (freq**2 + (x + det1)**2) * (sin((freq**2 + (x - det1)**2)**0.5 * duration / 2))**2 - p1, 0)
relative_det_2 = nsolve(freq**2 / (freq**2 + (x + det2)**2) * (sin((freq**2 + (x - det2)**2)**0.5 * duration / 2))**2 - p2, 0)
global detuning_1_global
detuning_1_global = U((relative_det_1 + relative_det_2)/2, 'kHz')
print "detuning 1", (relative_det_1 + relative_det_2)/2
def get_r_and_n(dist_W, dist_E, dx_min, n_tel, init_r):
"""Numerically solve for the nW, nE, and r
Sum of geometric sequence in standard form:
a + a*r + a*r^2 + ... + a*r^(n-1) = a(1 - r^n)/(1 - r)
However, I want to start at a*r^1, not a*r^0
a*r + a*r^2 + ... + a*r^(n-1) = a((1 - r^n)/(1 - r) - 1)
"""
#
# Define the three unknowns
nE = Symbol('nE')
nW = Symbol('nW')
r = Symbol('r')
#
# Equations to be solved
eqns = [(dist_W/dx_min)*(1 - r) + r**(nW+1) - r,
(dist_E/dx_min)*(1 - r) + r**(nE+1) - r,
nW + nE - n_tel]
# Put arguments in list and provide an initial guess
args = [nW, nE, r]
total_log_dist_sum = np.log(dist_W) + np.log(dist_E)
nW_guess = np.log(dist_W)/total_log_dist_sum*n_tel
nE_guess = np.log(dist_E)/total_log_dist_sum*n_tel
# Find the solution numerically
# The initial guess is pretty important, especially init_r
# Want to ensure we don't get r = 1, which is the trivial but useless soln
# This ends up being suprisingly robust
r_found = False
while not r_found:
try:
out = nsolve(eqns, args, [nW_guess, nE_guess, init_r])
# Check for trivial soln (comes about from init_r being too low)
if float(out[2]) == 1.0:
# Over compensate by setting init_r far too high and starting
# again
init_r = 5
else:
r_found = True
except ValueError:
# Reduce r (if r = 1.5, set it to 1.25, then 1.125, etc until
# solution is found)
init_r = 1 + (init_r - 1)/2
nW, nE, r = out
nW, nE = [np.round(float(X)).astype(int) for X in [nW, nE]]
r = float(r)
return nW, nE, r
def _solve_A(self, A, **kwargs):
"""
d, L are given in mm
"""
d = kwargs.get('d', 40.)
L = kwargs.get('L', 150.)
acc_check = kwargs.get('acc_check', 0.0000001)
solve_acc = kwargs.get('solve_acc', 20)
# set the accuracy target of the solver
sympy.mpmath.mp.dps = solve_acc
psi = sympy.Symbol('psi')
f1 = L - (L*sympy.tan(psi)) + (d/(2.*sympy.cos(psi))) - A
# initial guess: solve system for delta_x = 0
psi0 = math.atan(1 - (A/L))
# solve the equation numerically with sympy
psi_sol = sympy.nsolve(f1, psi, psi0)
# verify if the solution is valid
delta_x = d / (2.*math.cos(psi_sol))
x = L*math.tan(psi_sol)
Asym = sympy.Symbol('Asym')
f_check = x - L + Asym - delta_x
# verify that f_check == 0
if not sympy.solvers.checksol(f_check, Asym, A):
# in the event that it does not pass the checksol, see how close
# the are manually. Seems they are rather close
check_A = L + delta_x - x
error = abs(A - check_A) / A
if error > acc_check:
msg = 'sympy\'s solution does not passes checksol()'
msg += '\n A_check=%.12f <=> A=%.12f' % (check_A, A)
raise ValueError, msg
else:
msg = 'sympy.solvers.checksol() failed, manual check is ok. '
msg += 'A=%.2f, rel error=%2.3e' % (A, error)
logging.warning(msg)
return psi_sol*180./math.pi, psi0*180./math.pi
def solveSS(gamma,xsi,a):
beta = 0.98
alpha = 0.4
delta = 0.10
zbar = 0.
tao = 0.05
expZbar = 1.
epsilon = .1
rho = 0.90
#Solve SS
Css = Symbol('Css')
rss = Symbol('rss')
lss = Symbol('lss')
wss = Symbol('wss')
Tss = Symbol('Tss')
kss = Symbol('kss')
#-----------------------------------------------------------------#
#------------------Variables/Equations----------------------------#
#-----------------------------------------------------------------#
f1 = Css - (1.-tao)*(wss*lss + (rss-delta)*kss) - Tss
f2 = 1. - beta*((rss-delta)*(1. - tao) +1)
f3 = (a/((1.-lss)**xsi))-((1./Css**gamma)*wss*(1.-tao))
f4 = rss - ((alpha)*(kss**(alpha-1.))*(lss**(1.-alpha)))
f5 = wss - ((1. - alpha)*(kss**alpha)*(lss**(-alpha)))
f6 = Tss - (tao*(wss*lss + (rss - delta)*kss))
# use nsolve to solve for SS values
SOLSS = nsolve((f1,f2,f3,f4,f5,f6),(Css, rss, lss, wss, Tss, kss),
(.75,.12,.55,1.32,.041,4.05))
cs = float(SOLSS[0])
rs = float(SOLSS[1])
ls = float(SOLSS[2])
ws = float(SOLSS[3])
Ts = float(SOLSS[4])
ks = float(SOLSS[5])
return cs,rs,ls,ws,Ts,ks
def nsolve(self, x0):
"""Attempt a numeric solution and return a Result object.
Will raise a value error if self does not contain an
equation. Returns None if no solution was found.
"""
if not isinstance(self.raw_result, sympy.Equality):
raise ValueError("Trying to solve something that is not an "
"equation.")
try:
solution = sympy.nsolve(self.raw_result, x0)
except ValueError:
return None
# Wrap in sympy. TODO: precision
solution = (
sympy.Float(solution.real, 1000)
+ sympy.Float(solution.imag, 1000) * sympy.I
)
return self.__class__(self.input_str,
self.parsed,
solution,
True)
def find_best_threshold_and_error(u_size,n_std,samples):
'''
u_error is when we detect uniform as normal
'''
# print(find_best_threshold_and_error(8.8,1,10))
u_n_error_ratio=3
if 1: # much faster way...:
u_error = simplify("u_n_error_ratio*((x * 2.0 / u_size)^samples)".replace("u_n_error_ratio",str(u_n_error_ratio)))
cdf = "(0.5 + 0.5*erf(-x/(sqrt(2)*n_std)))"
n_error = simplify("1 - (1-2*cdf)^ samples".replace('cdf',cdf))
else:
nor = Normal(x, 0, n_std)
u_error = simplify("(x * 2.0 / u_size)^samples")
n_error = simplify("1 - (1-2*cdf)^samples")
n_error = n_error.subs(Symbol("cdf"),P(nor>x))
eqtn=n_error-u_error
# pprint(eqtn)
subs=[(Symbol("samples"),samples),(Symbol("n_std"),n_std),(Symbol("u_size"),u_size)]
eqtn=eqtn.subs(subs)
threshold=nsolve(eqtn,x,(n_std,u_size/2.0),simplify=False,rational=False , solution_dict=False, verify=False)
error=u_error.subs(x,threshold).subs(subs).evalf()
# print("u size: %g, n std: %6.04g, samples: %2d, threshold: %6.04g, error: %6.04g"%(u_size,n_std,samples,threshold,error))
return float(threshold),float(error)
def compute_mus():
def reduce_mu():
host_concen = 1-solute_concen
new_c0 = c0.astype(float)
for i in range(n):
new_c0[i,i] = host_concen*c0[i,i]
new_c0[n,n] = 2*solute_concen
omega = [
e0-sum([mu[site_mu_map[i]]*sum(new_c0[i,:])
for i in range(n+1)])]
x = solve(omega)
return x
# Compute trial mu
mu_red = reduce_mu()
#print(('mu_red', mu_red))
mult = multiplicity
#for ind in specie_site_index_map:
# print(ind[0], ind[1])
specie_concen = [
sum(mult[ind[0]:ind[1]]) for ind in specie_site_index_map]
#print('specie_concen', specie_concen)
max_host_specie_concen = 1-solute_concen
host_specie_concen_ratio = [specie_concen[i]/sum(specie_concen)* \
max_host_specie_concen for i in range(m)]
host_specie_concen_ratio[-1] = solute_concen
#print('hostspecie_concen_rat', host_specie_concen_ratio)
y_vect = host_specie_concen_ratio
#print(('y_vect', y_vect))
vector_func = [y_vect[i]-c_ratio[i] for i in range(m)]
vector_func.append(omega)
#print((vector_func))
mu_vals = None
c_val = None
m_min = -15.0
if e0 > 0:
m_max = 10 # Search space needs to be modified
else:
m_max = 0
for m1 in np.arange(m_min,m_max,0.3):
for m2 in np.arange(m_min,m_max,0.3):
m0 = mu_red[mu[0]].subs([(mu[1],m1),(mu[2],m2)])
try:
#print(m1,m2)
mu_vals = nsolve(vector_func,mu,[m0,m1,m2],module="numpy")
#mu_vals = nsolve(vector_func,mu,[m0,m1,m2])
# Line needs to be modified to include all mus when n > 2
except:
continue
break
if mu_vals:
mu_vals = [float(mu_val) for mu_val in mu_vals]
break
else:
raise ValueError("Couldn't find mus")
#print (('mu_vals', mu_vals))
return mu_vals
def solute_site_preference_finder(
structure, e0, T, vac_defs, antisite_defs, solute_defs,
solute_concen=0.01, trial_chem_pot = None):
"""
Compute the solute defect densities using dilute solution model.
Args:
structure: pymatgen.core.structure.Structure object representing the
primitive or unitcell of the crystal.
e0: The total energy of the undefected system.
This is E0 from VASP calculation.
T: Temperature in Kelvin
vac_defs: List of vacancy defect parameters in the dictionary format.
The keys of the dict associated with each vacancy defect are
1) site_index, 2) site_specie, 3) site_multiplicity, and
4) energy. 1-3 can be obtained from
pymatgen.analysis.defects.point_defects.Vacancy class.
Site index is expected to start with 1 (fortran index).
antisite_defs: List of antisite defect parameters in the dictionary
format. The keys of the dict associated with each antisite
defect are 1) site_index, 2) site_specie, 3) site_multiplicity,
4) substitution_specie, and 5) energy. 1-3 can be obtained
from pymatgen.analysis.defects.point_defects.Vacancy class.
solute_defs: List of solute defect parameters in the dictionary
format. Similary to that of antisite defs, wtih solute specie
specified in substitution_specie
solute_concen: Solute concentration (in fractional value)
trial_chem_pot: Trial chemical potentials to speedup the plot
generation. Format is {el1:mu1,...}
Returns:
plot_data: The data for plotting the solute defect concentration.
"""
if not check_input(vac_defs):
raise ValueError('Vacancy energy is not defined')
if not check_input(antisite_defs):
raise ValueError('Antisite energy is not defined')
formation_energies = {}
formation_energies['vacancies'] = copy.deepcopy(vac_defs)
formation_energies['antisites'] = copy.deepcopy(antisite_defs)
formation_energies['solute'] = copy.deepcopy(solute_defs)
for vac in formation_energies['vacancies']:
del vac['energy']
for asite in formation_energies['antisites']:
del asite['energy']
for solute in formation_energies['solute']:
del solute['energy']
# Setup the system
site_species = [vac_def['site_specie'] for vac_def in vac_defs]
solute_specie = solute_defs[0]['substitution_specie']
site_species.append(solute_specie)
multiplicity = [vac_def['site_multiplicity'] for vac_def in vac_defs]
m = len(set(site_species)) # distinct species
n = len(vac_defs) # inequivalent sites
# Reduce the system and associated parameters such that only distinctive
# atoms are retained
comm_div = gcd(*tuple(multiplicity))
multiplicity = [val/comm_div for val in multiplicity]
multiplicity.append(0)
e0 = e0/comm_div
T = Integer(T)
c0 = np.diag(multiplicity)
#print(('c0', c0))
mu = [Symbol('mu'+str(i)) for i in range(m)]
# Generate maps for hashing
# Generate specie->mu map and use it for site->mu map
specie_order = [] # Contains hash for site->mu map Eg: [Al, Ni]
site_specie_set = set() # Eg: {Ni, Al}
for i in range(len(site_species)):
site_specie = site_species[i]
if site_specie not in site_specie_set:
site_specie_set.add(site_specie)
specie_order.append(site_specie)
site_mu_map = [] # Eg: [mu0,mu0,mu0,mu1] where mu0->Al, and mu1->Ni
for i in range(len(site_species)):
site_specie = site_species[i]
j = specie_order.index(site_specie)
site_mu_map.append(j)
specie_site_index_map = [] # Eg: [(0,3),(3,4)] for Al & Ni
for i in range(m):
low_ind = site_species.index(specie_order[i])
if i < m-1:
hgh_ind = site_species.index(specie_order[i+1])
else:
hgh_ind = len(site_species)
specie_site_index_map.append((low_ind,hgh_ind))
"""
dC: delta concentration matrix:
dC[i,j,k]: Concentration change of atom i, due to presence of atom
j on lattice site k
Special case is [i,i,i] which is considered as vacancy
Few cases: dC[i,i,i] = -1 due to being vacancy special case
dC[k,k,i] = +1 due to increment in k at i lattice if i
lattice type is of different element
dC[i,k,i] = -1 due to decrement of ith type atom due to
presence of kth type atom on ith sublattice and kth type
atom specie is different from ith sublattice atom specie
dC[i,k,k] = 0 due to no effect on ith type atom
dC[i,j,k] = 0 if i!=j!=k
"""
dC = np.zeros((n+1,n+1,n), dtype=np.int)
for i in range(n):
for j in range(n):
for k in range(n):
if i == j and site_species[j] != site_species[k] and \
site_species[i] != site_species:
dC[i,j,k] = 1
for j in range(n+1):
for k in range(n):
if i == k:
#if j == k or site_species[j] != site_species[k]:
dC[i,j,k] = -1
for k in range(n):
dC[n,n,k] = 1
for k in range(n):
for j in range(n):
if i != j:
if site_species[i] == site_species[k]:
dC[i,j,k] = 0
for ind_map in specie_site_index_map:
if ind_map[1]-ind_map[0] > 1:
for index1 in range(ind_map[0]+1,ind_map[1]):
for index2 in range(ind_map[0]):
for i in range(n):
print (i, index1, index2)
dC[i,index1,index2] = 0
for index2 in range(ind_map[1],n):
for i in range(n):
print (i, index1, index2)
dC[i,index1,index2] = 0
print ('dC', dC)
# dE matrix: Flip energies (or raw defect energies)
els = [vac_def['site_specie'] for vac_def in vac_defs]
dE = []
for i in range(n+1):
dE.append([])
for i in range(n+1):
for j in range(n):
dE[i].append(0)
for j in range(n):
for i in range(n):
if i == j:
dE[i][j] = vac_defs[i]['energy']
else:
sub_specie = vac_defs[i]['site_specie']
site_specie = vac_defs[j]['site_specie']
if site_specie == sub_specie:
dE[i][j] = 0
else:
for as_def in antisite_defs:
if int(as_def['site_index']) == j+1 and \
sub_specie == as_def['substitution_specie']:
dE[i][j] = as_def['energy']
break
# Solute
site_specie = vac_defs[j]['site_specie']
for solute_def in solute_defs:
def_site_ind = int(solute_def['site_index'])
def_site_specie = solute_def['site_specie']
#print((def_site_specie, site_specie))
#print((def_site_ind, j+1))
if def_site_specie == site_specie and def_site_ind == j+1:
#print(('se', solute_def['energy']))
dE[n][j] = solute_def['energy']
break
dE = np.array(dE)
#np.where(dE == np.array(None), 0, dE)
# Initialization for concentrations
# c(i,p) == presence of ith type atom on pth type site
c = Matrix(n+1,n,[0]*n*(n+1))
for i in range(n+1):
for p in range(n):
c[i,p] = Integer(c0[i,p])
#print((c[i,p]))
for epi in range(n+1):
sum_mu = sum([mu[site_mu_map[j]]*Integer(
dC[j,epi,p]) for j in range(n+1)])
#print((sum_mu))
#print((multiplicity[p], dC[i,epi,p], dE[epi,p]))
c[i,p] += Integer(multiplicity[p]*dC[i,epi,p]) * \
exp(-(dE[epi,p]-sum_mu)/(k_B*T))
#print(("--------c---------"))
#for i in range(n+1):
# print((c[i,:]))
#print(("--------c---------"))
#specie_concen = [sum(mult[ind[0]:ind[1]]) for ind in specie_site_index_map]
#total_c = [sum(c[ind[0]:ind[1]]) for ind in specie_site_index_map]
total_c = []
for ind in specie_site_index_map:
total_c.append(sum([sum(c[i,:]) for i in range(*ind)]))
#total_c = [sum(c[i,:]) for i in range(n)]
c_ratio = [total_c[i]/sum(total_c) for i in range(m)]
print(('-------c_ratio-------------'))
for i in range(m):
print((c_ratio[i]))
# Expression for Omega, the Grand Potential
omega = e0 - sum([mu[site_mu_map[i]]*sum(c0[i,:]) for i in range(n+1)])
for p_r in range(n):
for epi in range(n):
sum_mu = sum([mu[site_mu_map[j]]*Integer(
dC[j,epi,p_r]) for j in range(n+1)])
omega -= k_B*T*multiplicity[p_r]*exp(-(dE[epi,p_r]-sum_mu)/(k_B*T))
print ('omega')
print (omega)
def compute_mus():
def reduce_mu():
host_concen = 1-solute_concen
new_c0 = c0.astype(float)
for i in range(n):
new_c0[i,i] = host_concen*c0[i,i]
new_c0[n,n] = 2*solute_concen
omega = [
e0-sum([mu[site_mu_map[i]]*sum(new_c0[i,:])
for i in range(n+1)])]
x = solve(omega)
return x
# Compute trial mu
mu_red = reduce_mu()
#print(('mu_red', mu_red))
mult = multiplicity
#for ind in specie_site_index_map:
# print(ind[0], ind[1])
specie_concen = [
sum(mult[ind[0]:ind[1]]) for ind in specie_site_index_map]
#print('specie_concen', specie_concen)
max_host_specie_concen = 1-solute_concen
host_specie_concen_ratio = [specie_concen[i]/sum(specie_concen)* \
max_host_specie_concen for i in range(m)]
host_specie_concen_ratio[-1] = solute_concen
#print('hostspecie_concen_rat', host_specie_concen_ratio)
y_vect = host_specie_concen_ratio
#print(('y_vect', y_vect))
vector_func = [y_vect[i]-c_ratio[i] for i in range(m)]
vector_func.append(omega)
#print((vector_func))
mu_vals = None
c_val = None
m_min = -15.0
if e0 > 0:
m_max = 10 # Search space needs to be modified
else:
m_max = 0
for m1 in np.arange(m_min,m_max,0.3):
for m2 in np.arange(m_min,m_max,0.3):
m0 = mu_red[mu[0]].subs([(mu[1],m1),(mu[2],m2)])
try:
#print(m1,m2)
mu_vals = nsolve(vector_func,mu,[m0,m1,m2],module="numpy")
#mu_vals = nsolve(vector_func,mu,[m0,m1,m2])
# Line needs to be modified to include all mus when n > 2
except:
continue
break
if mu_vals:
mu_vals = [float(mu_val) for mu_val in mu_vals]
break
else:
raise ValueError("Couldn't find mus")
#print (('mu_vals', mu_vals))
return mu_vals
if not trial_chem_pot:
mu_vals = compute_mus()
else:
try:
mu_vals = [trial_chem_pot[element] for element in specie_order]
except:
mu_vals = compute_mus()
#print(('mu_vals', mu_vals))
# Compute ymax
max_host_specie_concen = 1-solute_concen
mult = multiplicity
specie_concen = [
sum(mult[ind[0]:ind[1]]) for ind in specie_site_index_map]
host_specie_concen_ratio = [specie_concen[i]/sum(specie_concen)* \
max_host_specie_concen for i in range(m)]
host_specie_concen_ratio[-1] = solute_concen
#print('hostspecie_concen_rat', host_specie_concen_ratio)
li = specie_site_index_map[0][0]
hi = specie_site_index_map[0][1]
comp1_min = sum(multiplicity[li:hi])/sum(multiplicity)* \
max_host_specie_concen - 0.01
comp1_max = sum(multiplicity[li:hi])/sum(multiplicity)* \
max_host_specie_concen + 0.01
#print(ymin, ymax)
delta = (comp1_max - comp1_min)/50.0
#for i in range(len(mu)):
# print(mu[i], mu_vals[i])
# Compile mu's for all composition ratios in the range
#+/- 1% from the stoichiometry
result = {}
for y in np.arange(comp1_min,comp1_max+delta,delta):
result[y] = []
y_vect = []
y_vect.append(y)
y2 = max_host_specie_concen - y
y_vect.append(y2)
y_vect.append(solute_concen)
#print ('y_vect', y_vect)
vector_func = [y_vect[i]-c_ratio[i] for i in range(1,m)]
vector_func.append(omega)
#try:
#print (vector_func)
#print (mu)
#print (mu_vals)
x = nsolve(vector_func,mu,mu_vals,module="numpy")
#x = nsolve(vector_func,mu,mu_vals)
#except:
# del result[y]
# continue
result[y].append(x[0])
result[y].append(x[1])
result[y].append(x[2])
res = []
#print ('result', result.keys())
# Compute the concentrations for all the compositions
for key in sorted(result.keys()):
mu_val = result[key]
total_c_val = [total_c[i].subs(dict(zip(mu,mu_val))) \
for i in range(len(total_c))]
c_val = c.subs(dict(zip(mu,mu_val)))
#print ('c_val', c_val)
# Concentration of first element/over total concen
res1 = []
res1.append(float(total_c_val[0]/sum(total_c_val)))
sum_c0 = sum([c0[i,i] for i in range(n)])
#print ('c_val_n_0', c_val[n,0])
#print ('c_val_n_1', c_val[n,1])
for i in range(n+1):
for j in range(n):
if i == j: # Vacancy
#res1.append(float((c0[i,i]-sum(c_val[:,i]))/c0[i,i]))
vac_conc = float(exp(-(mu_val[site_mu_map[i]]+dE[i,i])/(k_B*T)))
res1.append(vac_conc)
else: # Antisite
res1.append(float(c_val[i,j]/c0[j,j]))
res.append(res1)
#print ('c0', c0)
#print ('res', res)
res = np.array(res)
#print ('res', res)
dtype = [(str('x'),np.float64)]+[(str('y%d%d' % (i, j)), np.float64) \
for i in range(n+1) for j in range(n)]
res1 = np.sort(res.view(dtype),order=[str('x')],axis=0)
conc = []
for i in range(n+1):
conc.append([])
for j in range(n):
conc[i].append([])
#print(conc)
for i in range(n+1): # Append vacancies
for j in range(n):
y1 = [dat[0][i*n+j+1] for dat in res1]
conc[i][j] = y1
#print(type(conc[i][j]))
plot_data = {}
"""Because all the plots have identical x-points storing it in a
single array"""
#for dat in res1:
# print dat
plot_data['x'] = [dat[0][0] for dat in res1] # x-axis data
# Element whose composition is varied. For x-label
plot_data['x_label'] = els[0]+ "_mole_fraction"
plot_data['y_label'] = "Fraction of {} at {} sites".format(
solute_specie,els[0])
y_data = []
#for i in range(n): # Vacancy plots
inds = specie_site_index_map[m-1]
#print ('inds', inds)
data1 = np.sum([conc[ind][0] for ind in range(*inds)],axis=0)
#print ('data1', data1)
data2 = np.sum([conc[ind][1] for ind in range(*inds)],axis=0)
#print ('data2', data2)
frac_data = data1/(data1+data2)
#print ('frac_data', frac_data)
frac_data = frac_data.tolist()
y_data.append({'data':frac_data})
plot_data['y'] = y_data
return plot_data
def dilute_solution_model(structure, e0, vac_defs, antisite_defs, T,
trial_chem_pot = None, generate='plot'):
"""
Compute the defect densities using dilute solution model.
Args:
structure: pymatgen.core.structure.Structure object representing the
primitive or unitcell of the crystal.
e0: The total energy of the undefected system.
This is E0 from VASP calculation.
vac_defs: List of vacancy defect parameters in the dictionary format.
The keys of the dict associated with each vacancy defect are
1) site_index, 2) site_specie, 3) site_multiplicity, and
4) energy. 1-3 can be obtained from
pymatgen.analysis.defects.point_defects.Vacancy class.
Site index is expected to start with 1 (fortran index).
antisite_defs: List of antisite defect parameters in the dictionary
format. The keys of the dict associated with each antisite defect
are 1) site_index, 2) site_specie, 3) site_multiplicity,
4) substitution_specie, and 5) energy. 1-3 can be obtained
from pymatgen.analysis.defects.point_defects.Vacancy class.
T: Temperature in Kelvin
trial_chem_pot (optional): Trial chemical potentials to speedup
the plot generation. Format is {el1:mu1,...}
generate (string): Options are plot or energy
Chemical potentials are also returned with energy option.
If energy option is not chosen, plot is generated.
Returns:
If generate=plot, the plot data is generated and returned in
HighCharts format.
If generate=energy, defect formation enthalpies and chemical
potentials are returned.
"""
if not check_input(vac_defs):
raise ValueError('Vacancy energy is not defined')
if not check_input(antisite_defs):
raise ValueError('Antisite energy is not defined')
formation_energies = {}
formation_energies['vacancies'] = copy.deepcopy(vac_defs)
formation_energies['antisites'] = copy.deepcopy(antisite_defs)
for vac in formation_energies['vacancies']:
del vac['energy']
for asite in formation_energies['antisites']:
del asite['energy']
# Setup the system
site_species = [vac_def['site_specie'] for vac_def in vac_defs]
multiplicity = [vac_def['site_multiplicity'] for vac_def in vac_defs]
m = len(set(site_species)) # distinct species
n = len(vac_defs) # inequivalent sites
# Reduce the system and associated parameters such that only distinctive
# atoms are retained
comm_div = gcd(*tuple(multiplicity))
multiplicity = [val/comm_div for val in multiplicity]
e0 = e0/comm_div
T = Integer(T)
c0 = np.diag(multiplicity)
#print ('c0',c0)
mu = [Symbol('mu'+i.__str__()) for i in range(m)]
# Generate maps for hashing
# Generate specie->mu map and use it for site->mu map
specie_order = [] # Contains hash for site->mu map Eg: [Al, Ni]
site_specie_set = set() # Eg: {Ni, Al}
for i in range(n):
site_specie = site_species[i]
if site_specie not in site_specie_set:
site_specie_set.add(site_specie)
specie_order.append(site_specie)
site_mu_map = [] # Eg: [mu0,mu0,mu0,mu1] where mu0->Al, and mu1->Ni
for i in range(n):
site_specie = site_species[i]
j = specie_order.index(site_specie)
site_mu_map.append(j)
specie_site_index_map = [] # Eg: [(0,3),(3,4)] for Al & Ni
for i in range(m):
low_ind = site_species.index(specie_order[i])
if i < m-1:
hgh_ind = site_species.index(specie_order[i+1])
else:
hgh_ind = n
specie_site_index_map.append((low_ind,hgh_ind))
"""
dC: delta concentration matrix:
dC[i,j,k]: Concentration change of atom i, due to presence of atom
j on lattice site k
Special case is [i,i,i] which is considered as vacancy
Few cases: dC[i,i,i] = -1 due to being vacancy special case
dC[k,k,i] = +1 due to increment in k at i lattice if i
lattice type is of different element
dC[i,k,i] = -1 due to decrement of ith type atom due to
presence of kth type atom on ith sublattice and kth type
atom specie is different from ith sublattice atom specie
dC[i,k,k] = 0 due to no effect on ith type atom
dC[i,j,k] = 0 if i!=j!=k
"""
dC = np.zeros((n,n,n), dtype=np.int)
for i in range(n):
for j in range(n):
for k in range(n):
if i == j and site_species[j] != site_species[k] and \
site_species[i] != site_species[k]:
dC[i,j,k] = 1
for j in range(n):
for k in range(n):
if i == k:
#if j == k or site_species[j] != site_species[k]:
dC[i,j,k] = -1
for k in range(n):
for j in range(n):
for i in range(n):
if i != j:
if site_species[j] == site_species[k]:
dC[i,j,k] = 0
#for j in range(n):
# if k != j:
# for i in range(n):
# if i == j:
# if abs(i-j) <= 1 and abs(j-k) <= 1 and abs(i-k) <= 1:
# dC[i,j,k] = 0
for ind_map in specie_site_index_map:
if ind_map[1]-ind_map[0] > 1:
for index1 in range(ind_map[0]+1,ind_map[1]):
for index2 in range(ind_map[0]):
for i in range(n):
#print (i, index1, index2)
dC[i,index1,index2] = 0
for index2 in range(ind_map[1],n):
for i in range(n):
#print (i, index1, index2)
dC[i,index1,index2] = 0
#print ('dC', dC)
# dE matrix: Flip energies (or raw defect energies)
els = [vac_def['site_specie'] for vac_def in vac_defs]
dE = []
for i in range(n):
dE.append([])
for i in range(n):
for j in range(n):
dE[i].append(0)
for j in range(n):
for i in range(n):
if i == j:
dE[i][j] = vac_defs[i]['energy']
else:
sub_specie = vac_defs[i]['site_specie']
site_specie = vac_defs[j]['site_specie']
if site_specie == sub_specie:
dE[i][j] = 0
else:
for as_def in antisite_defs:
if int(as_def['site_index']) == j+1 and \
sub_specie == as_def['substitution_specie']:
dE[i][j] = as_def['energy']
break
dE = np.array(dE)
#np.where(dE is None, dE, 0)
#print ('dE', dE)
# Initialization for concentrations
# c(i,p) == presence of ith type atom on pth type site
c = Matrix(n,n,[0]*n**2)
for i in range(n):
for p in range(n):
c[i,p] = Integer(c0[i,p])
site_flip_contribs = []
for epi in range(n):
sum_mu = sum([mu[site_mu_map[j]]*Integer(dC[j,epi,p]) \
for j in range(n)])
#print (i, epi, p, dC[i,epi, p], sum_mu)
#c[i,p] += Integer(multiplicity[p]*dC[i,epi,p]) * \
# exp(-(dE[epi,p]-sum_mu)/(k_B*T))
flip = Integer(multiplicity[p]*dC[i,epi,p]) * \
exp(-(dE[epi,p]-sum_mu)/(k_B*T))
if flip not in site_flip_contribs:
site_flip_contribs.append(flip)
c[i,p] += flip
#else:
#print (i, epi, p)
#print ('flip already present in site_flips')
#print ('c', c)
total_c = []
for ind in specie_site_index_map:
total_c.append(sum([sum(c[i,:]) for i in range(*ind)]))
c_ratio = [total_c[-1]/total_c[i] for i in range(m)]
#print ('c_ratio')
#for i in range(len(c_ratio)):
# print(c_ratio[i])
# Expression for Omega, the Grand Potential
omega = e0 - sum([mu[site_mu_map[i]]*sum(c0[i,:]) for i in range(n)])
for p_r in range(n):
for epi in range(n):
sum_mu = sum([mu[site_mu_map[j]]*Float(
dC[j,epi,p_r]) for j in range(n)])
omega -= k_B*T*multiplicity[p_r]*exp(-(dE[epi,p_r]-sum_mu)/(k_B*T))
def compute_mus():
def reduce_mu():
omega = [e0 - sum([mu[site_mu_map[i]]*sum(c0[i,:]) for i in range(n)])]
x = solve(omega)
return x
# Compute trial mu
mu_red = reduce_mu()
mult = multiplicity
specie_concen = [sum(mult[ind[0]:ind[1]]) for ind in specie_site_index_map]
y_vect = [specie_concen[-1]/specie_concen[i] for i in range(m)]
vector_func = [y_vect[i]-c_ratio[i] for i in range(m-1)]
vector_func.append(omega)
min_diff = 1e10
mu_vals = None
c_val = None
m1_min = -20.0
if e0 > 0:
m1_max = 10 # Search space needs to be modified
else:
m1_max = 0
for m1 in np.arange(m1_min,m1_max,0.1):
m0 = mu_red[mu[0]].subs(mu[-1],m1)
try:
x = nsolve(vector_func,mu,[m0,m1],module="numpy")
except:
continue
c_val = c.subs(dict(zip(mu,x)))
#if all(x >= 0 for x in c_val):
specie_concen = []
for ind in specie_site_index_map:
specie_concen.append(sum([sum(c_val[i,:]) for i in range(*ind)]))
y_comp = [specie_concen[-1]/specie_concen[i] for i in range(m)]
diff = math.sqrt(sum([pow(abs(y_comp[i]-y_vect[i]),2) for i in range(m)]))
if diff < min_diff:
min_diff = diff
mu_vals = x
if mu_vals:
mu_vals = [float(mu_val) for mu_val in mu_vals]
else:
raise ValueError()
return mu_vals
def compute_def_formation_energies():
i = 0
for vac_def in vac_defs:
site_specie = vac_def['site_specie']
ind = specie_order.index(site_specie)
uncor_energy = vac_def['energy']
formation_energy = uncor_energy + mu_vals[ind]
formation_energies['vacancies'][i]['formation_energy'] = formation_energy
specie_ind = site_mu_map[i]
indices = specie_site_index_map[specie_ind]
specie_ind_del = indices[1]-indices[0]
cur_ind = i - indices[0] + 1
if not specie_ind_del-1:
label = '$V_{'+site_specie+'}$'
else:
label = '$V_{'+site_specie+'_'+str(cur_ind)+'}$'
formation_energies['vacancies'][i]['label'] = label
i += 1
i = 0
for as_def in antisite_defs:
site_specie = as_def['site_specie']
sub_specie = as_def['substitution_specie']
ind1 = specie_order.index(site_specie)
ind2 = specie_order.index(sub_specie)
uncor_energy = as_def['energy']
formation_energy = uncor_energy + mu_vals[ind1] - mu_vals[ind2]
formation_energies['antisites'][i]['formation_energy'] = formation_energy
specie_ind = site_mu_map[i]
indices = specie_site_index_map[specie_ind]
specie_ind_del = indices[1]-indices[0]
cur_ind = i - indices[0] + 1
if not specie_ind_del-1:
label = '$'+sub_specie+'_{'+site_specie+'}$'
else:
label = '$'+sub_specie+'_{'+site_specie+'_'+str(cur_ind)+'}$'
formation_energies['antisites'][i]['label'] = label
i += 1
return formation_energies
if not trial_chem_pot:
mu_vals = compute_mus()
else:
try:
mu_vals = [trial_chem_pot[element] for element in specie_order]
except:
mu_vals = compute_mus()
if generate == 'energy':
formation_energies = compute_def_formation_energies()
mu_dict = dict(zip(specie_order,mu_vals))
return formation_energies, mu_dict
#sys.exit()
# Compute ymax
li = specie_site_index_map[0][0]
hi = specie_site_index_map[0][1]
comp1_min = int(sum(multiplicity[li:hi])/sum(multiplicity)*100)-1
comp1_max = int(sum(multiplicity[li:hi])/sum(multiplicity)*100)+1
delta = float(comp1_max-comp1_min)/120.0
yvals = []
for comp1 in np.arange(comp1_min,comp1_max+delta,delta):
comp2 = 100-comp1
y = comp2/comp1
yvals.append(y)
#ymin = comp2_min/comp1_max
#print comp1_min, comp1_max
#print comp2_min, comp2_max
#print ymax, ymin
# Compile mu's for all composition ratios in the range
#+/- 1% from the stoichiometry
result = {}
#for y in np.arange(ymin,ymax+delta,delta):
for y in yvals:
result[y] = []
vector_func = [y-c_ratio[0]]
vector_func.append(omega)
x = nsolve(vector_func,mu,mu_vals,module="numpy")
result[y].append(x[0])
result[y].append(x[1])
res = []
new_mu_dict = {}
# Compute the concentrations for all the compositions
for key in sorted(result.keys()):
mu_val = result[key]
total_c_val = [total_c[i].subs(dict(zip(mu,mu_val))) \
for i in range(len(total_c))]
c_val = c.subs(dict(zip(mu,mu_val)))
res1 = []
# Concentration of first element/over total concen
res1.append(float(total_c_val[0]/sum(total_c_val)))
new_mu_dict[res1[0]] = mu_val
sum_c0 = sum([c0[i,i] for i in range(n)])
#print res1[0]
for i in range(n):
for j in range(n):
if i == j: # Vacancy
#print (i, c_val[:,i])
# Consider numerical accuracy
#res1.append(float((c0[i,i]-sum(c_val[:,i]))/c0[i,i]))
#print ((mu_val[site_mu_map[i]]-dE[i,i])/(k_B*T))
vac_conc = float(exp(-(mu_val[site_mu_map[i]]+dE[i,i])/(k_B*T)))
#print vac_conc
res1.append(vac_conc)
else: # Antisite
res1.append(float(c_val[i,j]/c0[j,j]))
res.append(res1)
res = np.array(res)
dtype = [(str('x'),np.float64)]+[(str('y%d%d' % (i, j)), np.float64) \
for i in range(n) for j in range(n)]
res1 = np.sort(res.view(dtype), order=[str('x')],axis=0)
conc_data = {}
"""Because all the plots have identical x-points storing it in a
single array"""
conc_data['x'] = [dat[0][0] for dat in res1] # x-axis data
# Element whose composition is varied. For x-label
conc_data['x_label'] = els[0]+ " mole fraction"
conc_data['y_label'] = "Point defect concentration"
conc = []
for i in range(n):
conc.append([])
for j in range(n):
conc[i].append([])
for i in range(n):
for j in range(n):
y1 = [dat[0][i*n+j+1] for dat in res1]
conc[i][j] = y1
y_data = []
for i in range(n):
data = conc[i][i]
specie = els[i]
specie_ind = site_mu_map[i]
indices = specie_site_index_map[specie_ind]
specie_ind_del = indices[1]-indices[0]
cur_ind = i - indices[0] + 1
#if 'V' not in els:
# vac_string = "$V_{"
#else:
vac_string = "$Vac_{"
if not specie_ind_del-1:
label = vac_string+specie+'}$'
else:
label = vac_string+specie+'_'+str(cur_ind)+'}$'
# Plot data and legend info
y_data.append({'data':data,'name':label})
for i in range(n):
site_specie = els[i]
specie_ind = site_mu_map[i]
indices = specie_site_index_map[specie_ind]
specie_ind_del = indices[1]-indices[0]
cur_ind = i - indices[0] + 1
for j in range(m): # Antisite plot dat
sub_specie = specie_order[j]
if sub_specie == site_specie:
continue
if not specie_ind_del-1:
label = '$'+sub_specie+'_{'+site_specie+'}$'
else:
label = '$'+sub_specie+'_{'+site_specie+'_'+str(cur_ind)+'}$'
inds = specie_site_index_map[j]
data = np.sum([conc[ind][i] for ind in range(*inds)],axis=0)
data = data.tolist()
y_data.append({'data':data,'name':label})
conc_data['y'] = y_data
# Compute the formation energies
def compute_vac_formation_energies(mu_vals):
en = []
for vac_def in vac_defs:
site_specie = vac_def['site_specie']
ind = specie_order.index(site_specie)
uncor_energy = vac_def['energy']
formation_energy = uncor_energy + mu_vals[ind]
en.append(float(formation_energy))
return en
en_res = []
for key in sorted(new_mu_dict.keys()):
mu_val = new_mu_dict[key]
en_res.append(compute_vac_formation_energies(mu_val))
en_data = {'x_label':els[0]+' mole fraction', 'x':[]}
en_data['x'] = [dat[0][0] for dat in res1] # x-axis data
i = 0
y_data = []
for vac_def in vac_defs:
data = [data[i] for data in en_res]
site_specie = vac_def['site_specie']
ind = specie_order.index(site_specie)
specie_ind = site_mu_map[i]
indices = specie_site_index_map[specie_ind]
specie_ind_del = indices[1]-indices[0]
cur_ind = i - indices[0] + 1
vac_string = "$Vac_{"
if not specie_ind_del-1:
label = vac_string+site_specie+'}$'
else:
label = vac_string+site_specie+'_'+str(cur_ind)+'}$'
y_data.append({'data':data,'name':label})
i += 1
def compute_as_formation_energies(mu_vals):
en = []
for as_def in antisite_defs:
site_specie = as_def['site_specie']
sub_specie = as_def['substitution_specie']
ind1 = specie_order.index(site_specie)
ind2 = specie_order.index(sub_specie)
uncor_energy = as_def['energy']
form_en = uncor_energy + mu_vals[ind1] - mu_vals[ind2]
en.append(form_en)
return en
en_res = []
for key in sorted(new_mu_dict.keys()):
mu_val = new_mu_dict[key]
en_res.append(compute_as_formation_energies(mu_val))
i = 0
for as_def in antisite_defs:
data = [data[i] for data in en_res]
site_specie = as_def['site_specie']
sub_specie = as_def['substitution_specie']
ind1 = specie_order.index(site_specie)
ind2 = specie_order.index(sub_specie)
specie_ind = site_mu_map[i]
indices = specie_site_index_map[specie_ind]
specie_ind_del = indices[1]-indices[0]
cur_ind = i - indices[0] + 1
if not specie_ind_del-1:
label = '$'+sub_specie+'_{'+site_specie+'}$'
else:
label = '$'+sub_specie+'_{'+site_specie+'_'+str(cur_ind)+'}$'
y_data.append({'data':data,'name':label})
i += 1
en_data['y'] = y_data
# Return chem potential as well
mu_data = {'x_label':els[0]+' mole fraction', 'x':[]}
mu_data['x'] = [dat[0][0] for dat in res1] # x-axis data
y_data = []
for j in range(m):
specie = specie_order[j]
mus = [new_mu_dict[key][j] for key in sorted(new_mu_dict.keys())]
y_data.append({'data':mus, 'name':specie})
mu_data['y'] = y_data
return conc_data, en_data, mu_data
def _solve_A(A, **kwargs):
r"""
Centrifugal corrected equivalent moment
=======================================
Convert beam loading into a single equivalent bending moment. Note that
this is dependent on the location in the cross section. Due to the
way we measure the strain on the blade and how we did the calibration
of those sensors.
.. math::
\epsilon = \frac{M_{x_{equiv}}y}{EI_{xx}} = \frac{M_x y}{EI_{xx}}
+ \frac{M_y x}{EI_{yy}} + \frac{F_z}{EA}
M_{x_{equiv}} = M_x + \frac{I_{xx}}{I_{yy}} M_y \frac{x}{y}
+ \frac{I_{xx}}{Ay} F_z
Parameters
----------
st_arr : np.ndarray(19)
Only one line of the st_arr is allowed and it should correspond
to the correct radial position of the strain gauge.
load : list(6)
list containing the load time series of following components
.. math:: load = F_x, F_y, F_z, M_x, M_y, M_z
and where each component is an ndarray(m)
"""
d = kwargs.get("d", 40.0)
L = kwargs.get("L", 150.0)
acc_check = kwargs.get("acc_check", 0.0000001)
solve_acc = kwargs.get("solve_acc", 20)
# set the accuracy target of the solver
sympy.mpmath.mp.dps = solve_acc
psi = sympy.Symbol("psi")
f1 = L - (L * sympy.tan(psi)) + (d / (2.0 * sympy.cos(psi))) - A
# initial guess: solve system for delta_x = 0
psi0 = math.atan(1 - (A / L))
# solve the equation numerically with sympy
psi_sol = sympy.nsolve(f1, psi, psi0)
# verify if the solution is valid
delta_x = d / (2.0 * math.cos(psi_sol))
x = L * math.tan(psi_sol)
Asym = sympy.Symbol("Asym")
f_check = x - L + Asym - delta_x
# verify that f_check == 0
if not sympy.solvers.checksol(f_check, Asym, A):
# in the event that it does not pass the checksol, see how close
# the are manually. Seems they are rather close
check_A = L + delta_x - x
error = abs(A - check_A) / A
if error > acc_check:
msg = "sympy's solution does not passes checksol()"
msg += "\n A_check=%.12f <=> A=%.12f" % (check_A, A)
raise ValueError, msg
else:
msg = "sympy.solvers.checksol() failed, manual check is ok. "
msg += "A=%.2f, rel error=%2.3e" % (A, error)
logging.warning(msg)
return psi_sol * 180.0 / math.pi, psi0 * 180.0 / math.pi
def bestEffortFit(self,VV,II):
#splineTestVV=np.linspace(VV[0],VV[-1],1000)
#splineTestII=iFitSpline(splineTestVV)
#p1, = plt.plot(splineTestVV,splineTestII)
#p3, = plt.plot(VV,II,ls='None',marker='o', label='Data')
#plt.draw()
#plt.show()
#data point selection:
#lowest voltage (might be same as Isc)
V_start_n = VV[0]
I_start_n = II[0]
#highest voltage
V_end_n = VV[-1]
I_end_n = II[-1]
#Isc
iFit = interpolate.interp1d(VV,II)
V_sc_n = 0
try:
I_sc_n = float(iFit(V_sc_n))
except:
return([[nan,nan,nan,nan,nan], [nan,nan,nan,nan,nan], nan, "hard fail", 10])
#mpp
VVcalc = VV-VV[0]
IIcalc = II-min(II)
Pvirtual= np.array(VVcalc*IIcalc)
vMaxIndex = Pvirtual.argmax()
V_vmpp_n = VV[vMaxIndex]
I_vmpp_n = II[vMaxIndex]
#Vp: half way in voltage between vMpp and the start of the dataset:
V_vp_n = (V_vmpp_n-V_start_n)/2 +V_start_n
try:
I_vp_n = float(iFit(V_vp_n))
except:
return([[nan,nan,nan,nan,nan], [nan,nan,nan,nan,nan], nan, "hard fail", 10])
#Ip: half way in current between vMpp and the end of the dataset:
I_ip_n = (I_vmpp_n-I_end_n)/2 + I_end_n
iFit2 = interpolate.interp1d(VV,II-I_ip_n)
try:
V_ip_n = optimize.brentq(iFit2, VV[0], VV[-1])
except:
return([[nan,nan,nan,nan,nan], [nan,nan,nan,nan,nan], nan, "hard fail", 10])
diaplayAllGuesses = False
def evaluateGuessPlot(dataX, dataY, myguess):
myguess = [float(x) for x in myguess]
print "myguess:"
print myguess
vv=np.linspace(min(dataX),max(dataX),1000)
ii=vectorizedCurrent(vv,myguess[0],myguess[1],myguess[2],myguess[3],myguess[4])
plt.title('Guess and raw data')
plt.plot(vv,ii)
plt.scatter(dataX,dataY)
plt.grid(b=True)
plt.draw()
plt.show()
#phase 1 guesses:
I_L_initial_guess = I_sc_n
R_sh_initial_guess = 1e6
#compute intellegent guesses for Iph, Rsh by forcing the curve through several data points and numerically solving the resulting system of eqns
newRhs = rhs - I
aLine = Rsh*V+Iph-I
eqnSys1 = aLine.subs([(V,V_start_n),(I,I_start_n)])
eqnSys2 = aLine.subs([(V,V_vp_n),(I,I_vp_n)])
eqnSys = (eqnSys1,eqnSys2)
try:
nGuessSln = sympy.nsolve(eqnSys,(Iph,Rsh),(I_L_initial_guess,R_sh_initial_guess),maxsteps=10000)
except:
return([[nan,nan,nan,nan,nan], [nan,nan,nan,nan,nan], nan, "hard fail", 10])
I_L_guess = nGuessSln[0]
R_sh_guess = -1*1/nGuessSln[1]
R_s_guess = -1*(V_end_n-V_ip_n)/(I_end_n-I_ip_n)
n_initial_guess = 2 #TODO: maybe a more intelegant guess for n can be found using http://pvcdrom.pveducation.org/CHARACT/IDEALITY.HTM
I0_initial_guess = eyeNot[0].evalf(subs={Vth:thermalVoltage,Rs:R_s_guess,Rsh:R_sh_guess,Iph:I_L_guess,n:n_initial_guess,I:I_ip_n,V:V_ip_n})
initial_guess = [I0_initial_guess, I_L_guess, R_s_guess, R_sh_guess, n_initial_guess]
if diaplayAllGuesses:
evaluateGuessPlot(VV, II, initial_guess)
# let's try the fit now, if it works great, we're done, otherwise we can continue
#try:
#guess = initial_guess
#fitParams, fitCovariance, infodict, errmsg, ier = optimize.curve_fit(optimizeThis, VV, II,p0=guess,full_output = True,xtol=1e-13,ftol=1e-15)
#return(fitParams, fitCovariance, infodict, errmsg, ier)
#except:
#pass
#refine guesses for I0 and Rs by forcing the curve through several data points and numerically solving the resulting system of eqns
eqnSys1 = newRhs.subs([(Vth,thermalVoltage),(Iph,I_L_guess),(V,V_ip_n),(I,I_ip_n),(n,n_initial_guess),(Rsh,R_sh_guess)])
eqnSys2 = newRhs.subs([(Vth,thermalVoltage),(Iph,I_L_guess),(V,V_end_n),(I,I_end_n),(n,n_initial_guess),(Rsh,R_sh_guess)])
eqnSys = (eqnSys1,eqnSys2)
try:
nGuessSln = sympy.nsolve(eqnSys,(I0,Rs),(I0_initial_guess,R_s_guess),maxsteps=10000)
except:
return([[nan,nan,nan,nan,nan], [nan,nan,nan,nan,nan], nan, "hard fail", 10])
I0_guess = nGuessSln[0]
R_s_guess = nGuessSln[1]
#Rs_initial_guess = RsEqn[0].evalf(subs={I0:I0_initial_guess,Vth:thermalVoltage,Rsh:R_sh_guess,Iph:I_L_guess,n:n_initial_guess,I:I_end_n,V:V_end_n})
#I0_guess = I0_initial_guess
#R_s_guess = Rs_initial_guess
guess = [I0_guess, I_L_guess, R_s_guess, R_sh_guess, n_initial_guess]
if diaplayAllGuesses:
evaluateGuessPlot(VV, II, guess)
#nidf
#give 5x weight to data around mpp
#nP = II*VV
#maxIndex = np.argmax(nP)
#weights = np.ones(len(II))
#halfRange = (V_ip_n-VV[vMaxIndex])/2
#upperTarget = VV[vMaxIndex] + halfRange
#lowerTarget = VV[vMaxIndex] - halfRange
#lowerTarget = 0
#upperTarget = V_oc_n
#lowerI = np.argmin(abs(VV-lowerTarget))
#upperI = np.argmin(abs(VV-upperTarget))
#weights[range(lowerI,upperI)] = 3
#weights[maxnpi] = 10
#todo: play with setting up "key points"
guess = [float(x) for x in guess]
#odrMod = odr.Model(odrThing)
#myData = odr.Data(VV,II)
#myodr = odr.ODR(myData, odrMod, beta0=guess,maxit=5000,sstol=1e-20,partol=1e-20)#
#myoutput = myodr.run()
#myoutput.pprint()
#see http://docs.scipy.org/doc/external/odrpack_guide.pdf
try:
#myoutput = myodr.run()
#fitParams = myoutput.beta
#print myoutput.stopreason
#print myoutput.info
#ier = 1
fitParams, fitCovariance, infodict, errmsg, ier = optimize.curve_fit(optimizeThis, VV, II,p0=guess,full_output = True,xtol=1e-13,ftol=1e-15)
#fitParams, fitCovariance, infodict, errmsg, ier = optimize.leastsq(func=residual, args=(VV, II, np.ones(len(II))),x0=guess,full_output=1,xtol=1e-12,ftol=1e-14)#,xtol=1e-12,ftol=1e-14,maxfev=12000
#fitParams, fitCovariance, infodict, errmsg, ier = optimize.leastsq(func=residual, args=(VV, II, weights),x0=fitParams,full_output=1,ftol=1e-15,xtol=0)#,xtol=1e-12,ftol=1e-14
alwaysShowRecap = False
if alwaysShowRecap:
vv=np.linspace(VV[0],VV[-1],1000)
print "fit:"
print fitParams
print "guess:"
print guess
print ier
print errmsg
ii=vectorizedCurrent(vv,guess[0],guess[1],guess[2],guess[3],guess[4])
ii2=vectorizedCurrent(vv,fitParams[0],fitParams[1],fitParams[2],fitParams[3],fitParams[4])
plt.title('Fit analysis')
p1, = plt.plot(vv,ii, label='Guess',ls='--')
p2, = plt.plot(vv,ii2, label='Fit')
p3, = plt.plot(VV,II,ls='None',marker='o', label='Data')
#p4, = plt.plot(VV[range(lowerI,upperI)],II[range(lowerI,upperI)],ls="None",marker='o', label='5x Weight Data')
ax = plt.gca()
handles, labels = ax.get_legend_handles_labels()
ax.legend(handles, labels, loc=3)
plt.grid(b=True)
plt.draw()
plt.show()
return(fitParams, fitCovariance, infodict, errmsg, ier)
except:
return([[nan,nan,nan,nan,nan], [nan,nan,nan,nan,nan], nan, "hard fail", 10])
#def make_dictionary(max_length=10, **entries):
# return dict([(key, entries[key]) for i, key in enumerate(entries.keys()) if i < max_length])
# my guess for the fit parameters
# [I0, I_L, R_s, R_sh, n]
guess = [7.974383037191594e-11, 0.00627619846736794, 12.743239329693433, 5694.842341863068, 2.0]
#guess = {'I0': 1e-15, 'Iph': 8.6889261535882785, 'Rs': 0.5155903798902628, 'Rsh': 788.22883822837741, 'n': 40.0}
#guess = [guess['I0'],guess['Iph'],guess['Rs'],guess['Rsh'],guess['n']]
eqnSys1 = newRhs.subs([(Vth,thermalVoltage),(Iph,I_L_guess),(V,V_ip_n),(I,I_ip_n),(n,n_initial_guess),(Rsh,R_sh_guess)])
eqnSys2 = newRhs.subs([(Vth,thermalVoltage),(Iph,I_L_guess),(V,V_end_n),(I,I_end_n),(n,n_initial_guess),(Rsh,R_sh_guess)])
eqnSys = (eqnSys1,eqnSys2)
try:
nGuessSln = sympy.nsolve(eqnSys,(I0,Rs),(I0_initial_guess,R_s_guess),maxsteps=10000)
except:
return([[nan,nan,nan,nan,nan], [nan,nan,nan,nan,nan], nan, "hard fail", 10])
I0_guess = nGuessSln[0]
R_s_guess = nGuessSln[1]
#guess = [np.complex128(x) for x in guess]
# bounds on parameters
I0_bounds = [0, inf]
I_L_bounds = [0, inf]
R_s_bounds = [0, inf]
R_sh_bounds = [0, inf]
n_bounds = [0, 40]
myBounds=([I0_bounds[0], I_L_bounds[0], R_s_bounds[0], R_sh_bounds[0], n_bounds[0]], [I0_bounds[1], I_L_bounds[1], R_s_bounds[1], R_sh_bounds[1], n_bounds[1]])
#
# return F
# log(pdc) + thetam + log(abs(1- 2 * exp(-TIm/t1c) / (1 + exp(-(TIm + TD + tau)/t1c)) )) = log(msc)
# zguess = np.array([800,1200,800])
# z = fsolve(myFunction,zguess)
thetam, TIm, TD = sp.symbols('thetam, TIm, TD')
tau = 2600
efc = sp.log(pdc) + thetam + sp.log((1 - 2*sp.exp(-TIm/t1c)/(1 + sp.exp(-(TIm + TD + tau)/t1c)))) - sp.log(msc) - sp.log(100)
efg = sp.log(pdg) + thetam + sp.log((1 - 2*sp.exp(-TIm/t1g)/(1 + sp.exp(-(TIm + TD + tau)/t1g)))) - sp.log(msg)- sp.log(100)
efw = sp.log(pdw) + thetam + sp.log((1 - 2*sp.exp(-TIm/t1w)/(1 + sp.exp(-(TIm + TD + tau)/t1w)))) - sp.log(msw)- sp.log(100)
sol = sp.nsolve((efc, efg, efw),(thetam, TIm,TD), (800,1900,800))
thetamh = float(sol[0])
TImh = float(sol[1])
TDh = float(sol[2])
# read atlas betaspace
betaspace_filename = '/home/amod/mimecs/IPMI2013_BetaspaceRegression/code/msAtlas_hybrid_pd_t1_mprage_t2_true_betaspace.csv'
ms_atlas_betaspace = np.genfromtxt(betaspace_filename, delimiter=',')
atlas_pd = np.array(ms_atlas_betaspace[:,0].tolist(),dtype=np.float32)
atlas_t1 = np.array(ms_atlas_betaspace[:,1].tolist(),dtype=np.float32)
atlas_t2 = np.array(ms_atlas_betaspace[:,2].tolist(),dtype=np.float32)
synth_ms_atlas_fg = np.exp(np.log(atlas_pd) + thetamh + np.log(1 - 2*np.exp(-TImh/atlas_t1)/(1 + np.exp(-(TImh + TDh + tau)/atlas_t1)))- np.log(100))
delta_theta = 0.1
theta1 = theta0 + delta_theta * 1
theta2 = theta0 + delta_theta * 2
theta3 = theta0 + delta_theta * 3
s1 = s(theta1, P)
s2 = s(theta2, P)
s3 = s(theta3, P)
from sympy import Symbol, nsolve #@UnresolvedImport
import sympy #@UnusedImport @UnresolvedImport
from sympy import sin, cos #@UnresolvedImport
r = Symbol('r')
beta = Symbol('beta')
d0 = Symbol('d0')
d1 = Symbol('d1')
d2 = Symbol('d2')
d3 = Symbol('d3')
fx1 = r + cos(beta - s0) * d0 - (cos(theta1) * r + cos(theta1 + beta - s1) * d1)
fy1 = 0 + sin(beta - s0) * d0 - (sin(theta1) * r + sin(theta1 + beta - s1) * d1)
fx2 = r + cos(beta - s0) * d0 - (cos(theta2) * r + cos(theta2 + beta - s2) * d2)
fy2 = 0 + sin(beta - s0) * d0 - (sin(theta2) * r + sin(theta2 + beta - s2) * d2)
fx3 = r + cos(beta - s0) * d0 - (cos(theta3) * r + cos(theta3 + beta - s3) * d3)
fy3 = 0 + sin(beta - s0) * d0 - (sin(theta3) * r + sin(theta3 + beta - s3) * d3)
print nsolve((fx1, fx2, fx3, fy1, fy2, fy3), (r, beta, d0, d1, d2, d3), (3.1, 0.1, 5, 5, 5, 5))
pdb.set_trace()
#torque_answers_dict = solve(subbed_equations, [l_hip_torque, r_hip_torque])
#solved_dict = solve(subbed_value_equations, [l_hip_torque, r_hip_torque, theta1])
forcing_matrix = kane.forcing
forcing_matrix = simplify(forcing_matrix)
forcing_matrix = simplify(forcing_matrix.subs(zero_speed_dict).subs(parameter_dict).subs(torque_dict))
answer_vector = []
lhiptorque = []
rhiptorque = []
threshold = 0.1
x = -120
y = -120
while (x < 120):
x = x + 5
y = -120
while (y < 120):
solution_matrix = forcing_matrix.subs(dict(zip([l_hip_torque, r_hip_torque], [x,y])))
solution_dict = solve(solution_matrix, (sin(theta1 + theta2), sin(theta1 + theta2 + theta3), sin(theta1)))
f1 = solution_dict[sin(theta1 + theta2)] - sin(theta1+theta2)
f2 = solution_dict[sin(theta1 + theta2 + theta3)] - sin(theta1 + theta2 + theta3)
f3 = solution_dict[sin(theta1)] - sin(theta1)
answer_vector.append(nsolve((f1,f2,f3), (theta1, theta2, theta3), (0,0,0)))
rhiptorque.append(y)
lhiptorque.append(x)
y = y + 5
wss = Symbol("wss")
Tss = Symbol("Tss")
kss = Symbol("kss")
# -----------------------------------------------------------------#
# ------------------Variables/Equations----------------------------#
# -----------------------------------------------------------------#
f1 = Css - (1.0 - tao) * (wss * lss + (rss - delta) * kss) - Tss
f2 = 1.0 - beta * ((rss - delta) * (1.0 - tao) + 1)
f3 = (a / ((1.0 - lss) ** xsi)) - ((1.0 / Css ** gamma) * wss * (1.0 - tao))
f4 = rss - ((alpha) * (kss ** (alpha - 1.0)) * (lss ** (1.0 - alpha)))
f5 = wss - ((1.0 - alpha) * (kss ** alpha) * (lss ** (-alpha)))
f6 = Tss - (tao * (wss * lss + (rss - delta) * kss))
# use nsolve to solve for values#
SOLSS = nsolve((f1, f2, f3, f4, f5, f6), (Css, rss, lss, wss, Tss, kss), (0.75, 0.12, 0.55, 1.32, 0.041, 4.05))
cs = float(SOLSS[0])
rs = float(SOLSS[1])
ls = float(SOLSS[2])
ws = float(SOLSS[3])
Ts = float(SOLSS[4])
ks = float(SOLSS[5])
solVec = sp.array([[ks, ls], [ks, ls], [ks, ls], [zbar], [zbar]])
theta0 = np.mat([ks, ls, ks, ls, ks, ls, zbar, zbar])
# define vars t_1 = t-1
ct, ct1 = symbols("ct, ct1")
rt, rt1 = symbols("rt, rt1")
# We now find the predicted y values so we can find the residuals.
Y_hat = np.dot(X.T, Beta.T).T
resid = no_lag - Y_hat
sigma = np.cov(resid) # This is the sigma we will use to find A_0 inverse.
print sigma
## Solving for A_0_inv
# Applying short run restrictions means that A_0 inv. will have no (1,2) entry.
# We will be left with sigma = [[a11**2, 0], [a11*a22, a21**2 + a22**2]]
# We solve this equation symbolically below.
a11, a21, a22 = symbols(["a11", "a21", "a22"])
f1 = a11 ** 2 - sigma[0, 0]
f2 = a11 * a21 - sigma[1, 0]
f3 = a21 ** 2 + a22 ** 2 - sigma[1, 1]
AoInvSol = nsolve((f1, f2, f3), (a11, a21, a22), (0.5, -0.5, 0.5))
A_0_inv = sp.matrix([[0.0, 0.0], [0.0, 0.0]])
A_0_inv[0, 0] = AoInvSol[0]
A_0_inv[1, 0] = AoInvSol[1]
A_0_inv[1, 1] = AoInvSol[2]
print A_0_inv
A_0 = npla.inv(A_0_inv)
## Solving for D matricies
# Stack betas for easy D creation
bet = Beta[:, 1:]
B1, B2, B3, B4, B5, B6, B7, B8 = [
np.mat(bet[:, 0:2]),
np.mat(bet[:, 2:4]),
np.mat(bet[:, 4:6]),
np.mat(bet[:, 6:8]),
def linearize(self, x_o, u_o):
if x_o.lines != self.x.lines:
raise Exception, "Different line size"
if x_o.cols != self.x.cols:
raise Exception, "Different line size"
if u_o.lines != self.u.lines:
raise Exception, "Different line size"
if u_o.cols != self.u.cols:
raise Exception, "Different line size"
A = self.fun_f.jacobian(self.x)
B = self.fun_f.jacobian(self.u)
C = self.fun_h.jacobian(self.x)
for fun in self.functions:
for args in fun[3]:
for i in xrange(len(args)):
f = fun[1]
g = fun[2]
y = var("y")
F = (
g(y,*args) - f(y,*args)).diff(args[i]) / (
f(y,*args) - g(y,*args)).diff(y)
F = F.subs(y, fun[0](*args))
sub = {fun[0](*args).diff(args[i]): F}
A = A.subs(sub)
B = B.subs(sub)
C = C.subs(sub)
num = True
for fun in self.functions:
for args in fun[3]:
sub = dict(map(
lambda i: (self.x[i],x_o[i]),
xrange(self.x.lines * self.x.cols))
+ map(
lambda i: (self.u[i],u_o[i]),
xrange(self.u.lines * self.u.cols)))
args_o = map(lambda x: x.subs(sub),args)
num = True
for arg in args_o:
num &= arg.is_number
if num:
y = var("y")
y = nsolve(
fun[1](y,*args_o)- fun[2](y,*args_o),
0.7)
A = A.subs(fun[0](*args), y)
B = B.subs(fun[0](*args), y)
C = C.subs(fun[0](*args), y)
sub = dict(map(
lambda i: (self.x[i],x_o[i]),
xrange(self.x.lines * self.x.cols))
+ map(
lambda i: (self.u[i],u_o[i]),
xrange(self.u.lines * self.u.cols)))
A = A.subs(sub).evalf()
B = B.subs(sub).evalf()
C = C.subs(sub).evalf()
return (A,B,C)
#Use differentionation to solve convex minimization problem from earlier
f=(sy.sin(x)+.05*x**2+sy.sin(y)+.05*y**2)
#Get partial derivatives in terms of x and y
del_x=sy.diff(f,x)
del_x
#0.1*x + cos(x)
del_y=sy.diff(f,y)
del_y
#0.1*y + cos(y)
#using educated guess we can achieve results similar to global minimum,local minimum method
x0=sy.nsolve(del_x,-1.5)
y0=sy.nsolve(del_y,-1.5)
print x0, y0
#-1.42755177876459 -1.42755177876459
f.subs({x:x0,y:y0}).evalf()
#-1.77572565314742
#Without having the best guess estimates may prove inaccruate due to only finding a local minimum
x0=sy.nsolve(del_x,1.5)
y0=sy.nsolve(del_y,1.5)
print x0, y0
#1.74632928225285 1.74632928225285
f.subs({x:x0,y:y0}).evalf()
#2.27423381055640
resid = no_lag - Y_hat sigma = np.cov(resid) # This is the sigma we will use to find A_0 inverse. ## Solve for D(1) and then C(1) # Solve for D(1) B_1 = np.eye(2) - B1 - B2 - B3 - B4 - B5 - B6 - B7 - B8 D_1 = npla.inv(B_1) #Solve symbolically for C_1 c11, c21, c22 = symbols(['c1', 'c2', 'c3']) C_12 = np.dot(np.dot(D_1, sigma),D_1.T) g1 = c11**2 - C_12[0,0] g2 = c11*c21 - C_12[1,0] g3 = c21**2 + c22**2 - C_12[1,1] c_1_sol = nsolve((g1,g2,g3),(c11,c21,c22),(-.03,.113,-.3)) C_1 = np.empty([2,2]) C_1[0,0] = c_1_sol[0] C_1[1,0] = c_1_sol[1] C_1[1,1] = c_1_sol[2] ## Compute A_0_inv and A_0 A_0_inv = np.dot(npla.inv(D_1), C_1) A_0 = npla.inv(A_0_inv) ## Create D matricies D0 = np.mat(np.eye(n_vars)) D1 = B1*D0 D2 = B1*D1 + B2*D0 D3 = B1*D2 + B2*D1 + B3*D0
