def scalar_validation_statistics(results, groups):
""" plot absolute z transformation of p_theta values,
grouped by dictionary groups
Parameters
----------
results : pandas.DataFrame with row called 'z'
groups : list of lists of columns of results
"""
pl.figure()
width = max(pl.absolute(results.ix['z']))
for row, (g_name, g) in enumerate(reversed(groups)):
z = pl.absolute(results.ix['z', g].__array__())
pl.plot([pl.mean(z)], [row], 'o', color='k', mec='k', mew=1)
pl.plot(z, [row] * len(z), 'o', color='none', mec='k', mew=1)
msg = 'p: %s' % ', '.join(
['%.3f' % p for p in sorted(results.ix['p', g] * len(g))])
#msg += 'MAE: %s' % str(
pl.text(1.1 * width, row, msg, va='center', fontsize='small')
pl.yticks(range(len(groups)),
['%s %d' % (g_name, len(g)) for (g_name, g) in reversed(groups)],
fontsize='large')
pl.axis([-.05 * width, width * 1.05, -.5, len(groups) - .5])
pl.xlabel(r'Absolute $z$-score of $p_\theta$ values', fontsize='large')
pl.subplots_adjust(right=.5)
def update_design(self):
ax = self.ax
ax.cla()
ax2 = self.ax2
ax2.cla()
wp = self.wp
ws = self.ws
gpass = self.gpass
gstop = self.gstop
b, a = ss.iirdesign(wp, ws, gpass, gstop, ftype=self.ftype, output='ba')
self.a = a
self.b = b
#b = [1,2]; a = [1,2]
#Print this on command line so we can use it in our programs
print 'b = ', pylab.array_repr(b)
print 'a = ', pylab.array_repr(a)
my_w = pylab.logspace(pylab.log10(.1*self.ws[0]), 0.0, num=512)
#import pdb;pdb.set_trace()
w, h = freqz(b, a, worN=my_w*pylab.pi)
gp = 10**(-gpass/20.)#Go from db to regular
gs = 10**(-gstop/20.)
self.design_line, = ax.plot([.1*self.ws[0], self.ws[0], wp[0], wp[1], ws[1], 1.0], [gs, gs, gp, gp, gs, gs], 'ko:', lw=2, picker=5)
ax.semilogx(w/pylab.pi, pylab.absolute(h),lw=2)
ax.text(.5,1.0, '{:d}/{:d}'.format(len(b), len(a)))
pylab.setp(ax, 'xlim', [.1*self.ws[0], 1.2], 'ylim', [-.1, max(1.1,1.1*pylab.absolute(h).max())], 'xticklabels', [])
ax2.semilogx(w/pylab.pi, pylab.unwrap(pylab.angle(h)),lw=2)
pylab.setp(ax2, 'xlim', [.1*self.ws[0], 1.2])
ax2.set_xlabel('Normalized frequency')
pylab.draw()
def plot_thresholds(rawdata, scan_values, plane='horizontal',
xlabel='turns', ylabel='intensity [particles]', zlabel='normalized emittance',
xlimits=((0.,8192)), ylimits=((0.,7.1e11)), zlimits=((0., 10.))):
# Prepare input data.
# x axis
t = rawdata[0,:,:]
turns = plt.ones(t.shape).T * plt.arange(len(t))
turns = turns.T
# z axis
epsn_abs = {}
epsn_abs['horizontal'] = plt.absolute(rawdata[11,:,:])
epsn_abs['vertical'] = plt.absolute(rawdata[12,:,:])
# Prepare plot environment.
ax11, ax13 = _create_axes(xlabel, ylabel, zlabel, xlimits, ylimits, zlimits)
cmap = plt.cm.get_cmap('jet', 2)
ax11.patch.set_facecolor(cmap(range(2))[-1])
cmap = plt.cm.get_cmap('jet')
x, y = plt.meshgrid(turns[:,0], scan_values)
z = epsn_abs[plane]
threshold_plot = ax11.contourf(x, y, z.T, levels=plt.linspace(zlimits[0], zlimits[1], 201),
vmin=zlimits[0], vmax=zlimits[1], cmap=cmap)
cb = plt.colorbar(threshold_plot, ax13, orientation='vertical')
cb.set_label(zlabel)
plt.tight_layout()
def rank_by_distance_bhatt(self, qkeys, ikeys, rkeys, dists):
"""
::
Reduce timbre-channel distances to ranks list by ground-truth key indices
Bhattacharyya distance on timbre-channel probabilities and Kullback distances
"""
# timbre-channel search using pre-computed distances
ranks_list = []
t_keys, t_lens = self.get_adb_lists(0)
rdists=pylab.ones(len(t_keys))*float('inf')
qk = self._get_probs_tc(qkeys)
for i in range(len(ikeys[0])): # number of include keys
ikey=[]
dk = pylab.zeros(self.timbre_channels)
for t_chan in range(self.timbre_channels): # timbre channels
ikey.append(ikeys[t_chan][i])
try:
# find dist of key i for query
i_idx = rkeys[t_chan].index( ikey[t_chan] ) # dataset include-key match
# the reduced distance function in include_keys order
# distance is Bhattacharyya distance on probs and dists
dk[t_chan] = dists[t_chan][i_idx]
except:
print("Key not found in result list: ", ikey, "for query:", qkeys[t_chan])
raise error.BregmanError()
rk = self._get_probs_tc(ikey)
a_idx = t_keys.index( ikey[0] ) # audiodb include-key index
rdists[a_idx] = distance.bhatt(pylab.sqrt(pylab.absolute(dk)), pylab.sqrt(pylab.absolute(qk*rk)))
#search for the index of the relevant keys
rdists = pylab.absolute(rdists)
sort_idx = pylab.argsort(rdists) # Sort fields into database order
for r in self.ground_truth: # relevant keys
ranks_list.append(pylab.where(sort_idx==r)[0][0]) # Rank of the relevant key
return ranks_list, rdists
def add_to_results(model, name):
df = getattr(model, name)
model.results['param'].append(name)
model.results['bias'].append(df['abs_err'].mean())
model.results['mae'].append((pl.median(pl.absolute(df['abs_err'].dropna()))))
model.results['mare'].append(pl.median(pl.absolute(df['rel_err'].dropna())))
model.results['pc'].append(df['covered?'].mean())
def rank_by_distance_bhatt(self, qkeys, ikeys, rkeys, dists):
"""
::
Reduce timbre-channel distances to ranks list by ground-truth key indices
Bhattacharyya distance on timbre-channel probabilities and Kullback distances
"""
# timbre-channel search using pre-computed distances
ranks_list = []
t_keys, t_lens = self.get_adb_lists(0)
rdists=pylab.ones(len(t_keys))*float('inf')
qk = self._get_probs_tc(qkeys)
for i in range(len(ikeys[0])): # number of include keys
ikey=[]
dk = pylab.zeros(self.timbre_channels)
for t_chan in range(self.timbre_channels): # timbre channels
ikey.append(ikeys[t_chan][i])
try:
# find dist of key i for query
i_idx = rkeys[t_chan].index( ikey[t_chan] ) # dataset include-key match
# the reduced distance function in include_keys order
# distance is Bhattacharyya distance on probs and dists
dk[t_chan] = dists[t_chan][i_idx]
except:
print "Key not found in result list: ", ikey, "for query:", qkeys[t_chan]
raise error.BregmanError()
rk = self._get_probs_tc(ikey)
a_idx = t_keys.index( ikey[0] ) # audiodb include-key index
rdists[a_idx] = distance.bhatt(pylab.sqrt(pylab.absolute(dk)), pylab.sqrt(pylab.absolute(qk*rk)))
#search for the index of the relevant keys
rdists = pylab.absolute(rdists)
sort_idx = pylab.argsort(rdists) # Sort fields into database order
for r in self.ground_truth: # relevant keys
ranks_list.append(pylab.where(sort_idx==r)[0][0]) # Rank of the relevant key
return ranks_list, rdists
def scalar_validation_statistics(results, groups):
""" plot absolute z transformation of p_theta values,
grouped by dictionary groups
Parameters
----------
results : pandas.DataFrame with row called 'z'
groups : list of lists of columns of results
"""
pl.figure()
width = max(pl.absolute(results.ix['z']))
for row, (g_name, g) in enumerate(reversed(groups)):
z = pl.absolute(results.ix['z', g].__array__())
pl.plot([pl.mean(z)], [row], 'o', color='k', mec='k', mew=1)
pl.plot(z, [row]*len(z), 'o', color='none', mec='k', mew=1)
msg = 'p: %s' % ', '.join(['%.3f'%p for p in sorted(results.ix['p', g]*len(g))])
#msg += 'MAE: %s' % str(
pl.text(1.1*width, row, msg, va='center', fontsize='small')
pl.yticks(range(len(groups)), ['%s %d' % (g_name, len(g)) for (g_name, g) in reversed(groups)], fontsize='large')
pl.axis([-.05*width, width*1.05, -.5, len(groups)-.5])
pl.xlabel(r'Absolute $z$-score of $p_\theta$ values', fontsize='large')
pl.subplots_adjust(right=.5)
def boxForcing(bMin, bMax, radius, c,
angle): #confines the particles inside the sample
x = pl.uniform(bMin, bMax)
y = pl.uniform(bMin, bMax)
if x < (bMin + c * radius):
x = x + (radius) * (1 + c * pl.absolute(pl.sin(pl.radians(angle))))
if x > (bMax - c * radius):
x = bMin + c * radius
if x > (bMax - c * radius):
x = x - (radius) * (1 + c * pl.absolute(pl.sin(pl.radians(angle))))
if x < (bMin + c * radius):
x = bMax - c * radius
if y > (bMax - c * radius):
y = y - (radius) * (1 + c * pl.absolute(pl.cos(pl.radians(angle))))
if y < (bMin + c * radius):
y = bMax - c * radius
if y < (bMin + c * radius):
y = y + (radius) * (1 + c * pl.absolute(pl.cos(pl.radians(angle))))
if y > (bMax - c * radius):
y = bMin + c * radius
center = []
center.append([x, y])
return center
def fwhm(x, y): hm = pl.amax(y/2.0); y_diff = pl.absolute(y-hm); y_diff_sorted = pl.sort(y_diff); i1 = pl.where(y_diff==y_diff_sorted[0]); i2 = pl.where(y_diff==y_diff_sorted[1]); fwhm = pl.absolute(x[i1]-x[i2]); return hm, fwhm
def add_to_results(model, name):
df = getattr(model, name)
model.results['param'].append(name)
model.results['bias'].append(df['abs_err'].mean())
model.results['mae'].append(
(pl.median(pl.absolute(df['abs_err'].dropna()))))
model.results['mare'].append(pl.median(pl.absolute(
df['rel_err'].dropna())))
model.results['pc'].append(df['covered?'].mean())
def MaxV(n, m, v, w, chi, phi, a):
"""Returns velocity at which the difference between right-handed and left-handed photons is maximal."""
D = lambda V: -py.absolute(PlusMinDiff(n, m, V, w, chi, 0, a) / V)
F = lambda V: -py.absolute(PlusMinDiff(n, m, V, w, chi, py.pi, a) / V)
optD = optimize.minimize_scalar(D, method='bounded', bounds=(1 / n, 1))
optF = optimize.minimize_scalar(F, method='bounded', bounds=(1 / n, 1))
if optD.fun < optF.fun:
return float(optD.x)
else:
return float(optF.x)
def fwhm_2gauss(x, y, dx=0.001): ''' Finds the FWHM for the profile y(x), with accuracy dx=0.001 Uses a 2-Gauss 1D fit. ''' popt, pcov = curve_fit(gauss2, x, y); xx = pl.arange(pl.amin(x), pl.amax(x)+dx, dx); ym = gauss2(xx, popt[0], popt[1], popt[2], popt[3], popt[4], popt[5]) hm = pl.amax(ym/2.0); y_diff = pl.absolute(ym-hm); y_diff_sorted = pl.sort(y_diff); i1 = pl.where(y_diff==y_diff_sorted[0]); i2 = pl.where(y_diff==y_diff_sorted[1]); fwhm = pl.absolute(xx[i1]-xx[i2]); return hm, fwhm, xx, ym
def fresnelSingleTransformVW(self,d) :
# compute new window
x2 = self.nx*pl.absolute(d)*self.wl/(self.endx-self.startx)
y2 = self.ny*pl.absolute(d)*self.wl/(self.endy-self.starty)
# create new intensity object
i2 = Intensity2D(self.nx,-x2/2,x2/2,
self.ny,-y2/2,y2/2,
self.wl)
# compute intensity
u1p = self.i*pl.exp(-1j*pl.pi/(d*self.wl)*(self.xgrid**2+self.ygrid**2))
ftu1p = pl.fftshift(pl.fft2(pl.fftshift(u1p)))
i2.i = ftu1p*1j/(d*i2.wl)*pl.exp(-1j*pl.pi/(d*i2.wl)*(i2.xgrid**2+i2.ygrid**2))
return i2
def LoadEnvCond(arg, dirname, files):
for file in files:
Grand_mean = p.nan
filepath = os.path.join(dirname, file)
if filepath == os.path.join(dirname, 'GeneralData.dat'):
data = p.genfromtxt(filepath)
if data[-1, 4] != 0.0:
grand_mean = data[:, 1].mean()
frame_scaling = 1.0 / (data[1, 0] - data[0, 0])
filepath_turb = os.path.join(dirname, 'ModelParams.dat')
l = re.split(" ", ln.getline(filepath_turb, 6))
turb_param = float(l[6])
l = re.split(" ", ln.getline(filepath_turb, 29))
rand_death_factor = float(l[6])
frame_half_size = p.rint((1.0 / (data[:, 11] \
/ data[:, 4]).mean() ) * 0.5 * frame_scaling)
mean_turbul = p.zeros((data.shape[0]-(2.0 \
* frame_half_size), 2))
mean_turbul[:,0] = data[frame_half_size : \
- frame_half_size][:, 0].copy()
k = frame_half_size
for j in range(mean_turbul.shape[0]):
mean_turbul[j, 1] = p.absolute(data[k \
- frame_half_size : k + frame_half_size, 1].mean() \
- grand_mean)
k = k + 1
Grand_mean = mean_turbul[:, 1].mean()
arg.append((Grand_mean, turb_param, rand_death_factor))
else:
break
def merge_data_csvs(id):
df = pandas.DataFrame()
dir = dismod3.settings.JOB_WORKING_DIR % id
#print dir
for f in sorted(glob.glob('%s/posterior/data-*.csv' % dir)):
#print 'merging %s' % f
df2 = pandas.read_csv(f, index_col=None)
df2.index = df2['index']
df = df.drop(set(df.index) & set(df2.index)).append(df2)
df['residual'] = df['value'] - df['mu_pred']
df['scaled_residual'] = df['residual'] / pl.sqrt(
df['value'] * (1 - df['value']) / df['effective_sample_size'])
#df['scaled_residual'] = df['residual'] * pl.sqrt(df['effective_sample_size']) # including
df['abs_scaled_residual'] = pl.absolute(df['scaled_residual'])
d = .005 # TODO: save delta in these files, use negative binomial to calc logp
df['logp'] = [
mc.negative_binomial_like(x * n, (p + 1e-3) * n,
d * (p + 1e-3) * n) for x, p, n in
zip(df['value'], df['mu_pred'], df['effective_sample_size'])
]
df['logp'][df['data_type'] == 'rr'] = df['scaled_residual'][df['data_type']
== 'rr']
df = df.sort('logp')
#print df.filter('data_type area age_start age_end year_start sex effective_sample_size value residual logp'.split())[:25]
return df
def fresnelSingleTransformVW(self, d):
# compute new window
x2 = self.nx * pl.absolute(d) * self.wl / (self.endx - self.startx)
y2 = self.ny * pl.absolute(d) * self.wl / (self.endy - self.starty)
# create new intensity object
i2 = Intensity2D(self.nx, -x2 / 2, x2 / 2, self.ny, -y2 / 2, y2 / 2,
self.wl)
# compute intensity
u1p = self.i * pl.exp(-1j * pl.pi / (d * self.wl) *
(self.xgrid**2 + self.ygrid**2))
ftu1p = pl.fftshift(pl.fft2(pl.fftshift(u1p)))
i2.i = ftu1p * 1j / (d * i2.wl) * pl.exp(-1j * pl.pi / (d * i2.wl) *
(i2.xgrid**2 + i2.ygrid**2))
return i2
def rank_by_distance_avg(self, qkeys, ikeys, rkeys, dists):
"""
::
Reduce timbre-channel distances to ranks list by ground-truth key indices
Kullback distances
"""
# timbre-channel search using pre-computed distances
ranks_list = []
t_keys, t_lens = self.get_adb_lists(0)
rdists=pylab.ones(len(t_keys))*float('inf')
for t_chan in range(self.timbre_channels): # timbre channels
t_keys, t_lens = self.get_adb_lists(t_chan)
for i, ikey in enumerate(ikeys[t_chan]): # include keys, results
try:
# find dist of key i for query
i_idx = rkeys[t_chan].index( ikey ) # lower_bounded include-key index
a_idx = t_keys.index( ikey ) # audiodb include-key index
# the reduced distance function in include_keys order
# distance is the sum for now
if t_chan:
rdists[a_idx] += dists[t_chan][i_idx]
else:
rdists[a_idx] = dists[t_chan][i_idx]
except:
print("Key not found in result list: ", ikey, "for query:", qkeys[t_chan])
raise error.BregmanError()
#search for the index of the relevant keys
rdists = pylab.absolute(rdists)
sort_idx = pylab.argsort(rdists) # Sort fields into database order
for r in self.ground_truth: # relevant keys
ranks_list.append(pylab.where(sort_idx==r)[0][0]) # Rank of the relevant key
return ranks_list, rdists
def deriv_sign_rate(f=rate,
age_indices=age_indices,
tau=1.e14,
deriv=deriv,
sign=sign):
df = pl.diff(f[age_indices], deriv)
return mc.normal_like(pl.absolute(df) * (sign * df < 0), 0., tau)
def rank_by_distance_avg(self, qkeys, ikeys, rkeys, dists):
"""
::
Reduce timbre-channel distances to ranks list by ground-truth key indices
Kullback distances
"""
# timbre-channel search using pre-computed distances
ranks_list = []
t_keys, t_lens = self.get_adb_lists(0)
rdists=pylab.ones(len(t_keys))*float('inf')
for t_chan in range(self.timbre_channels): # timbre channels
t_keys, t_lens = self.get_adb_lists(t_chan)
for i, ikey in enumerate(ikeys[t_chan]): # include keys, results
try:
# find dist of key i for query
i_idx = rkeys[t_chan].index( ikey ) # lower_bounded include-key index
a_idx = t_keys.index( ikey ) # audiodb include-key index
# the reduced distance function in include_keys order
# distance is the sum for now
if t_chan:
rdists[a_idx] += dists[t_chan][i_idx]
else:
rdists[a_idx] = dists[t_chan][i_idx]
except:
print "Key not found in result list: ", ikey, "for query:", qkeys[t_chan]
raise error.BregmanError()
#search for the index of the relevant keys
rdists = pylab.absolute(rdists)
sort_idx = pylab.argsort(rdists) # Sort fields into database order
for r in self.ground_truth: # relevant keys
ranks_list.append(pylab.where(sort_idx==r)[0][0]) # Rank of the relevant key
return ranks_list, rdists
def determineCuts(spec2d, dCutFactor = 4.0, dAddPix = 10, bPlot = True) :
vproj = spec2d.sum(1)
dvproj = vproj-pylab.roll(vproj,1)#derivitive
index = pylab.arange(0,len(vproj),1)
index1 = index[dvproj > dvproj.max()/dCutFactor]
start = index1[0]
end = index1[-1]
startWide = start-dAddPix
endWide = end+dAddPix
if bPlot :
pylab.figure(12)
pylab.clf()
pylab.subplot(2,2,1)
pylab.plot(vproj)
pylab.subplot(2,2,2)
pylab.plot(pylab.absolute(dvproj))
pylab.axhline(dvproj.max()/dCutFactor)
pylab.subplot(2,2,3)
pylab.plot(vproj)
pylab.axvline(start)
pylab.axvline(end)
pylab.axvline(startWide)
pylab.axvline(endWide)
return [startWide, endWide]
def merge_data_csvs(id):
df = pandas.DataFrame()
dir = dismod3.settings.JOB_WORKING_DIR % id
#print dir
for f in sorted(glob.glob('%s/posterior/data-*.csv'%dir)):
#print 'merging %s' % f
df2 = pandas.read_csv(f, index_col=None)
df2.index = df2['index']
df = df.drop(set(df.index)&set(df2.index)).append(df2)
df['residual'] = df['value'] - df['mu_pred']
df['scaled_residual'] = df['residual'] / pl.sqrt(df['value'] * (1 - df['value']) / df['effective_sample_size'])
#df['scaled_residual'] = df['residual'] * pl.sqrt(df['effective_sample_size']) # including
df['abs_scaled_residual'] = pl.absolute(df['scaled_residual'])
d = .005 # TODO: save delta in these files, use negative binomial to calc logp
df['logp'] = [mc.negative_binomial_like(x*n, (p+1e-3)*n, d*(p+1e-3)*n) for x,p,n in zip(df['value'], df['mu_pred'], df['effective_sample_size'])]
df['logp'][df['data_type'] == 'rr'] = df['scaled_residual'][df['data_type'] == 'rr']
df = df.sort('logp')
#print df.filter('data_type area age_start age_end year_start sex effective_sample_size value residual logp'.split())[:25]
return df
def calcAUC(data, y0, lag, mgr, asym, time):
"""
Calculate the area under the curve of the logistic function
using its integrated formula
[ A( [A-y0] log[ exp( [4m(l-t)/A]+2 )+1 ]) / 4m ] + At
"""
# First check that max growth rate is not zero
# If so, calculate using the data instead of the equation
if mgr == 0:
auc = calcAUCData(data, time)
else:
timeS = time[0]
timeE = time[-1]
t1 = asym - y0
#try:
t2_s = py.log(py.exp((4 * mgr * (lag - timeS) / asym) + 2) + 1)
t2_e = py.log(py.exp((4 * mgr * (lag - timeE) / asym) + 2) + 1)
#except RuntimeWarning as rw:
# Exponent is too large, setting to 10^3
# newexp = 1000
# t2_s = py.log(newexp + 1)
# t2_e = py.log(newexp + 1)
t3 = 4 * mgr
t4_s = asym * timeS
t4_e = asym * timeE
start = (asym * (t1 * t2_s) / t3) + t4_s
end = (asym * (t1 * t2_e) / t3) + t4_e
auc = end - start
if py.absolute(auc) == float('Inf'):
x = py.diff(time)
auc = py.sum(x * data[1:])
return auc
def unimodal_rate(f=rate, age_indices=age_indices, tau=1.e5):
df = pl.diff(f[age_indices])
sign_changes = pl.find((df[:-1] > NEARLY_ZERO) & (df[1:] < -NEARLY_ZERO))
sign = pl.ones(len(age_indices)-2)
if len(sign_changes) > 0:
change_age = sign_changes[len(sign_changes)/2]
sign[change_age:] = -1.
return -tau*pl.dot(pl.absolute(df[:-1]), (sign * df[:-1] < 0))
def _calculate_spectra_sussix(sx, sy, Q_x, Q_y, Q_s, n_lines):
n_turns, n_files = sx.shape
# Allocate memory for output.
oxx, axx = plt.zeros((n_lines, n_files)), plt.zeros((n_lines, n_files))
oyy, ayy = plt.zeros((n_lines, n_files)), plt.zeros((n_lines, n_files))
# Initialise Sussix object.
SX = PySussix.Sussix()
x, xp, y, yp = sx.real, sx.imag, sy.real, sy.imag
for file_i in xrange(n_files):
SX.sussix_inp(nt1=1, nt2=n_turns, idam=2, ir=0, tunex=Q_x[file_i] % 1, tuney=Q_y[file_i] % 1)
SX.sussix(x[:,file_i], xp[:,file_i], y[:,file_i], yp[:,file_i], sx[:,file_i], sx[:,file_i])
# Amplitude normalisation
SX.ax /= plt.amax(SX.ax)
SX.ay /= plt.amax(SX.ay)
# Tunes
SX.ox = plt.absolute(SX.ox)
SX.oy = plt.absolute(SX.oy)
if file_i==0:
tunexsx = SX.ox[plt.argmax(SX.ax)]
tuneysx = SX.oy[plt.argmax(SX.ay)]
print "\n*** Tunes from Sussix"
print " tunex", tunexsx, ", tuney", tuneysx, "\n"
# Tune normalisation
SX.ox = (SX.ox - (Q_x[file_i] % 1)) / Q_s[file_i]
SX.oy = (SX.oy - (Q_y[file_i] % 1)) / Q_s[file_i]
# Sort
CX = plt.rec.fromarrays([SX.ox, SX.ax], names='ox, ax')
CX.sort(order='ax')
CY = plt.rec.fromarrays([SX.oy, SX.ay], names='oy, ay')
CY.sort(order='ay')
ox, ax, oy, ay = CX.ox, CX.ax, CY.oy, CY.ay
oxx[:,file_i], axx[:,file_i], oyy[:,file_i], ayy[:,file_i] = ox, ax, oy, ay
spectra = {}
spectra['horizontal'] = (oxx, axx)
spectra['vertical'] = (oyy, ayy)
return spectra
def store_results(dm, area, sex, year):
types_to_plot = 'p i r rr'.split()
graphics.plot_convergence_diag(dm.vars)
pl.clf()
for i, t in enumerate(types_to_plot):
pl.subplot(len(types_to_plot), 1, i + 1)
graphics.plot_data_bars(dm.model.get_data(t))
pl.plot(range(101),
dm.emp_priors[t, 'mu'],
linestyle='dashed',
color='grey',
label='Emp. Prior',
linewidth=3)
pl.plot(range(101), dm.true[t], 'b-', label='Truth', linewidth=3)
pl.plot(range(101),
dm.posteriors[t].mean(0),
'r-',
label='Estimate',
linewidth=3)
pl.errorbar(range(101),
dm.posteriors[t].mean(0),
yerr=1.96 * dm.posteriors[t].std(0),
fmt='r-',
linewidth=1,
capsize=0)
pl.ylabel(t)
graphics.expand_axis()
pl.legend(loc=(0., -.95), fancybox=True, shadow=True)
pl.subplots_adjust(hspace=0, left=.1, right=.95, bottom=.2, top=.95)
pl.xlabel('Age (Years)')
pl.show()
model = dm
model.mu = pandas.DataFrame()
for t in types_to_plot:
model.mu = model.mu.append(pandas.DataFrame(
dict(true=dm.true[t],
mu_pred=dm.posteriors[t].mean(0),
sigma_pred=dm.posteriors[t].std(0))),
ignore_index=True)
data_simulation.add_quality_metrics(model.mu)
print '\nparam prediction bias: %.5f, MARE: %.3f, coverage: %.2f' % (
model.mu['abs_err'].mean(),
pl.median(pl.absolute(
model.mu['rel_err'].dropna())), model.mu['covered?'].mean())
print
data_simulation.initialize_results(model)
data_simulation.add_to_results(model, 'mu')
data_simulation.finalize_results(model)
print model.results
return model
def Concurrence(n, m, v, w, chi, phi, a):
"""Returns two times the absolute value of the determinant of the matrix of scattering amplitudes.
Used as a measure of entanglement."""
om = AmpOneMin(n, m, v, w, chi, phi, a)
op = AmpOnePlus(n, m, v, w, chi, phi, a)
tm = AmpTwoMin(n, m, v, w, chi, phi, a)
tp = AmpTwoPlus(n, m, v, w, chi, phi, a)
return 2 * py.absolute(op * tm - om * tp) / AmpTotSq(n, m, v, w)
def update(self, data): blue=pl.less(data,0.) # Fill in True where less than 0.0 red=~blue # Reverse of the above #Blue self.image[...,2][blue]=pl.minimum(pl.absolute(pl.divide(data[blue],255.)),1.) #Red -- Max 40C, so we increase the intensity of the red color 6 times self.image[...,0][red]=pl.minimum(1.,pl.divide(pl.multiply(data[red],6.),255.)) pl.imshow(self.image) pl.draw()
def xyamb(xytab,qu,xyout=''):
mytb=taskinit.tbtool()
if not isinstance(qu,tuple):
raise Exception,'qu must be a tuple: (Q,U)'
if xyout=='':
xyout=xytab
if xyout!=xytab:
os.system('cp -r '+xytab+' '+xyout)
QUexp=complex(qu[0],qu[1])
print 'Expected QU = ',qu # , ' (',pl.angle(QUexp)*180/pi,')'
mytb.open(xyout,nomodify=False)
QU=mytb.getkeyword('QU')['QU']
P=pl.sqrt(QU[0,:]**2+QU[1,:]**2)
nspw=P.shape[0]
for ispw in range(nspw):
st=mytb.query('SPECTRAL_WINDOW_ID=='+str(ispw))
if (st.nrows()>0):
q=QU[0,ispw]
u=QU[1,ispw]
qufound=complex(q,u)
c=st.getcol('CPARAM')
fl=st.getcol('FLAG')
xyph0=pl.angle(pl.mean(c[0,:,:][pl.logical_not(fl[0,:,:])]),True)
print 'Spw = '+str(ispw)+': Found QU = '+str(QU[:,ispw]) # +' ('+str(pl.angle(qufound)*180/pi)+')'
#if ( (abs(q)>0.0 and abs(qu[0])>0.0 and (q/qu[0])<0.0) or
# (abs(u)>0.0 and abs(qu[1])>0.0 and (u/qu[1])<0.0) ):
if ( pl.absolute(pl.angle(qufound/QUexp)*180/pi)>90.0 ):
c[0,:,:]*=-1.0
xyph1=pl.angle(pl.mean(c[0,:,:][pl.logical_not(fl[0,:,:])]),True)
st.putcol('CPARAM',c)
QU[:,ispw]*=-1
print ' ...CONVERTING X-Y phase from '+str(xyph0)+' to '+str(xyph1)+' deg'
else:
print ' ...KEEPING X-Y phase '+str(xyph0)+' deg'
st.close()
QUr={}
QUr['QU']=QU
mytb.putkeyword('QU',QUr)
mytb.close()
QUm=pl.mean(QU[:,P>0],1)
QUe=pl.std(QU[:,P>0],1)
Pm=pl.sqrt(QUm[0]**2+QUm[1]**2)
Xm=0.5*atan2(QUm[1],QUm[0])*180/pi
print 'Ambiguity resolved (spw mean): Q=',QUm[0],'U=',QUm[1],'(rms=',QUe[0],QUe[1],')','P=',Pm,'X=',Xm
stokes=[1.0,QUm[0],QUm[1],0.0]
print 'Returning the following Stokes vector: '+str(stokes)
return stokes
def _power(self):
if not self._have_stft:
if not self._stft():
return False
fp = self._check_feature_params()
self.POWER=(pylab.absolute(self.STFT)**2).sum(0)
self._have_power=True
if fp['verbosity']:
print "Extracted POWER"
return True
def unimodal_rate(f=rate, age_indices=age_indices, tau=1.e5):
df = pl.diff(f[age_indices])
sign_changes = pl.find((df[:-1] > NEARLY_ZERO)
& (df[1:] < -NEARLY_ZERO))
sign = pl.ones(len(age_indices) - 2)
if len(sign_changes) > 0:
change_age = sign_changes[len(sign_changes) / 2]
sign[change_age:] = -1.
return -tau * pl.dot(pl.absolute(df[:-1]),
(sign * df[:-1] < 0))
def AmpOnePlusSq(n, m, v, w, chi, phi, a):
"""Returns squared amplitude of the ( 1 -> 1,+ ) process."""
E = Gamma(v) * m
p = Gamma(v) * m * v
B = 2 * E + 2 * m - w
dot = p * py.cos(a) * SinCh(n, m, v, w)
cross = ACrossPlusThree(n, m, v, w, chi, phi, a)
amp = dot * B + 1j * cross
fac = 4 * E**2 * (E + m) * (E + m - w)
return py.absolute(amp)**2 / fac
def _power(self):
if not self._stft():
return False
fp = self._check_feature_params()
self.POWER=(P.absolute(self.STFT)**2).sum(0)
self._have_power=True
if self.verbosity:
print "Extracted POWER"
self.X=self.POWER
return True
def _power(self):
if not self._stft():
return False
fp = self._check_feature_params()
self.POWER = (P.absolute(self.STFT)**2).sum(0)
self._have_power = True
if self.verbosity:
print("Extracted POWER")
self.X = self.POWER
return True
def plot_risetimes(a, b, **kwargs):
# plt.ion()
# if kwargs is not None:
# for key, value in kwargs.iteritems():
# if key == 'file_list':
# file_list = value
# if key == 'scan_line':
# scan_line = value
# varray = plt.array(get_value_from_cfg(file_list, scan_line))
n_files = a.shape[-1]
cmap = plt.get_cmap('jet')
c = [cmap(i) for i in plt.linspace(0, 1, n_files)]
fig1, (ax1, ax2) = plt.subplots(1, 2, figsize=(20, 10))
[ax.set_color_cycle(c) for ax in (ax1, ax2)]
r = []
for i in xrange(n_files):
x, y = a[:,i], b[:,i]
# xo, yo = x, y #, get_envelope(x, y)
xo, yo = get_envelope(x, y)
p = plt.polyfit(xo, np.log(yo), 1)
# Right way to fit... a la Nicolas - the fit expert!
l = ax1.plot(x, plt.log(plt.absolute(y)))
lcolor = l[-1].get_color()
ax1.plot(xo, plt.log(yo), color=lcolor, marker='o', mec=None)
ax1.plot(x, p[1] + x * p[0], color=lcolor, ls='--', lw=3)
l = ax2.plot(x, y)
lcolor = l[-1].get_color()
ax2.plot(xo, yo, 'o', color=lcolor)
xi = plt.linspace(plt.amin(x), plt.amax(x))
yi = plt.exp(p[1] + p[0] * xi)
ax2.plot(xi, yi, color=lcolor, ls='--', lw=3)
print p[1], p[0], 1 / p[0]
# plt.draw()
# ax1.cla()
# ax2.cla()
r.append(1/p[0])
ax2.set_ylim(0, 1000)
plt.figure(2)
plt.plot(r, lw=3, c='purple')
# plt.gca().set_ylim(0, 10000)
# ax3 = plt.subplot(111)
# ax3.semilogy(x, y)
# ax3.semilogy(xo, yo)
return r
def _corrIntensity(self, laserNum, intensity, dist):
#iScale = self.calib.maxIntensity - self.calib.minIntensity
focalOffset = 256 * (1 - self.calib.caliParams[laserNum].focalDist/13100)**2
corrIntensity = intensity + self.calib.caliParams[laserNum].focalSlope * pl.absolute(focalOffset - 256*(1-dist/65535)**2)
if corrIntensity<self.calib.minIntensity: corrIntensity = self.calib.minIntensity
if corrIntensity>self.calib.maxIntensity: corrIntensity = self.calib.maxIntensity
corrIntensity = (corrIntensity-self.calib.minIntensity)/self.calib.maxIntensity
return corrIntensity
def _calculate_sussix_spectrum(self, turn, window_width):
# Initialise Sussix object
SX = PySussix.Sussix()
SX.sussix_inp(nt1=1, nt2=window_width, idam=2, ir=0, tunex=self.q_x, tuney=self.q_y)
tunes_x = plt.zeros(self.n_particles_to_analyse)
tunes_y = plt.zeros(self.n_particles_to_analyse)
n_particles_to_analyse_10th = int(self.n_particles_to_analyse/10)
print 'Running SUSSIX analysis ...'
for i in xrange(self.n_particles_to_analyse):
if not i%n_particles_to_analyse_10th: print ' Particle', i
SX.sussix(self.x[i,turn:turn+window_width], self.xp[i,turn:turn+window_width],
self.y[i,turn:turn+window_width], self.yp[i,turn:turn+window_width],
self.x[i,turn:turn+window_width], self.xp[i,turn:turn+window_width]) # this line is not used by sussix!
tunes_x[i] = plt.absolute(SX.ox[plt.argmax(SX.ax)])
tunes_y[i] = plt.absolute(SX.oy[plt.argmax(SX.ay)])
return tunes_x, tunes_y
def mare(id):
df = upload_fits.merge_data_csvs(id)
df['are'] = pl.absolute((df['value'] - df['mu_pred']) / df['value'])
print 'mare by type:'
print pl.sort(df.groupby('data_type')['are'].median())
print
print 'overall mare: %.3f' % df['are'].median()
return df['are'].median()
def _calculate_spectra_fft(sx, sy, Q_x, Q_y, Q_s, n_lines):
n_turns, n_files = sx.shape
# Allocate memory for output.
oxx, axx = plt.zeros((n_lines, n_files)), plt.zeros((n_lines, n_files))
oyy, ayy = plt.zeros((n_lines, n_files)), plt.zeros((n_lines, n_files))
for file_i in xrange(n_files):
t = plt.linspace(0, 1, n_turns)
ax = plt.absolute(plt.fft(sx[:, file_i]))
ay = plt.absolute(plt.fft(sy[:, file_i]))
# Amplitude normalisation
ax /= plt.amax(ax, axis=0)
ay /= plt.amax(ay, axis=0)
# Tunes
if file_i==0:
tunexfft = t[plt.argmax(ax[:n_turns/2], axis=0)]
tuneyfft = t[plt.argmax(ay[:n_turns/2], axis=0)]
print "\n*** Tunes from FFT"
print " tunex:", tunexfft, ", tuney:", tuneyfft, "\n"
# Tune normalisation
ox = (t - (Q_x[file_i] % 1)) / Q_s[file_i]
oy = (t - (Q_y[file_i] % 1)) / Q_s[file_i]
# Sort
CX = plt.rec.fromarrays([ox, ax], names='ox, ax')
CX.sort(order='ax')
CY = plt.rec.fromarrays([oy, ay], names='oy, ay')
CY.sort(order='ay')
ox, ax, oy, ay = CX.ox[-n_lines:], CX.ax[-n_lines:], CY.oy[-n_lines:], CY.ay[-n_lines:]
oxx[:,file_i], axx[:,file_i], oyy[:,file_i], ayy[:,file_i] = ox, ax, oy, ay
spectra = {}
spectra['horizontal'] = (oxx, axx)
spectra['vertical'] = (oyy, ayy)
return spectra
def img_transition(file1, file2, map_array, blk_siz=2, n=50):
I = file2gray(file1)
J = file2gray(file2)
d = absolute(I - J)
steps = linspace(d.min(), d.max(), n+1)
for i, step in enumerate(steps):
K = I * (d>step) + J * (d<step)
# do something with K
im_name = os.path.join(".", "output", "%s-%s-%02d.png" %(file1, file2, i))
imsave(im_name, K, cmap=cm.gray)
def plot_cascade(cascade, model):
weights = []
thresholds = []
for i, stage in enumerate(cascade.stages):
#print("stage:" , i)
if stage.feature_type == stage.Level2DecisionTree:
weights.append(stage.weight)
thresholds.append(stage.cascade_threshold)
elif stage.feature_type == stage.Stumps:
weights.append(stage.weight)
thresholds.append(stage.cascade_threshold)
else:
raise Exception("Received an unhandled stage.feature_type")
# end of "for each stage"
for i, stage in enumerate(cascade.stages):
#print("stage %i cascade threshold:" % i , stage.cascade_threshold)
#print("stage %i weight:" % i , weights[i])
pass
if thresholds[0] < -1E5:
print("The provided model seems not have a soft cascade, " \
"skipping plot_cascade")
return
# create new figure
#fig =
pylab.figure()
pylab.clf() # clear the figure
pylab.gcf().set_facecolor("w") # set white background
pylab.grid(True)
#pylab.spectral() # set the default color map
# draw the figure
max_scores = pylab.cumsum(pylab.absolute(weights))
pylab.plot(max_scores, label="maximum possible score")
pylab.plot(thresholds, label="cascade threshold")
pylab.legend(loc ="upper left", fancybox=True)
pylab.xlabel("Cascade stage")
pylab.ylabel("Detection score")
title = "Soft cascade"
if model:
title = "Soft cascade for model '%s' over '%s' dataset" \
% (model.detector_name, model.training_dataset_name)
pylab.title(title)
pylab.draw()
return
def plot_cascade(cascade, model):
weights = []
thresholds = []
for i, stage in enumerate(cascade.stages):
#print("stage:" , i)
if stage.feature_type == stage.Level2DecisionTree:
weights.append(stage.weight)
thresholds.append(stage.cascade_threshold)
elif stage.feature_type == stage.Stumps:
weights.append(stage.weight)
thresholds.append(stage.cascade_threshold)
else:
raise Exception("Received an unhandled stage.feature_type")
# end of "for each stage"
for i, stage in enumerate(cascade.stages):
#print("stage %i cascade threshold:" % i , stage.cascade_threshold)
#print("stage %i weight:" % i , weights[i])
pass
if thresholds[0] < -1E5:
print("The provided model seems not have a soft cascade, " \
"skipping plot_cascade")
return
# create new figure
#fig =
pylab.figure()
pylab.clf() # clear the figure
pylab.gcf().set_facecolor("w") # set white background
pylab.grid(True)
#pylab.spectral() # set the default color map
# draw the figure
max_scores = pylab.cumsum(pylab.absolute(weights))
pylab.plot(max_scores, label="maximum possible score")
pylab.plot(thresholds, label="cascade threshold")
pylab.legend(loc="upper left", fancybox=True)
pylab.xlabel("Cascade stage")
pylab.ylabel("Detection score")
title = "Soft cascade"
if model:
title = "Soft cascade for model '%s' over '%s' dataset" \
% (model.detector_name, model.training_dataset_name)
pylab.title(title)
pylab.draw()
return
def calcaV(W,method = "ratio"):
"""Calculate aV"""
if method == "ratio":
return pl.log(pl.absolute(W/pl.roll(W,-1,axis=1)))
else:
aVs = pl.zeros(pl.shape(W))
n = pl.arange(1,pl.size(W,axis=1)+1)
f = lambda b,t,W: W - b[0] * pl.exp(-b[1] * t)
for i in xrange(pl.size(W,axis=0)):
params,result = optimize.leastsq(f,[1.,1.],args=(n,W[i]))
aVs[i] = params[1] * pl.ones(pl.shape(W[i]))
return aVs
def calc_quality_metrics(true_cf, true_std, std_bias, preds):
"""
Calculate the CSMF accuracy, absolute error, and relative error for the
provided true and predicted CSMFs.
"""
T, J = pl.array(true_cf).shape
pred_cf = pl.array(preds.mean(0))
true_cf = pl.array(true_cf)
if len(true_std)==1 and len(true_cf)>1:
true_std = [true_std[0] for i in range(len(true_cf))]
csmf_accuracy = 1. - pl.absolute(pred_cf-true_cf).sum(1) / (2*(1-true_cf.min(1)))
abs_err = pl.absolute(pred_cf-true_cf)
rel_err = pl.absolute(pred_cf-true_cf)/true_cf
coverage = calc_coverage(true_cf, preds)
all = pl.np.core.records.fromarrays([true_cf.ravel(), pl.array(true_std).ravel(), (pl.ones([T,J])*pl.array(std_bias)).ravel(),
abs_err.ravel(), rel_err.ravel(), pl.array([[i for j in range(J)] for i in csmf_accuracy]).ravel(),
coverage.ravel(), pl.array([[j for j in range(J)] for t in range(T)]).ravel(),
pl.array([[t for j in range(J)] for t in range(T)]).ravel()],
names=['true_cf','true_std','std_bias','abs_err','rel_err','csmf_accuracy','coverage','cause','time'])
return all
def main():
x = pylab.randn(100)
t0 = time.clock()
y1 = ks_loop(x, 0.9, 10)
t_loop = time.clock() - t0
t0 = time.clock()
y2 = ks(x, 0.9, 10)
t_matrix = time.clock() - t0
print("Loop method took %g seconds." % t_loop)
print("Matrix method took %g seconds." % t_matrix)
# Make sure y1 and y2 are same within very small numeric
# error.
assert(pylab.sum(pylab.absolute(y1 - y2)) < 1e-10)
# Plot x and y
pylab.figure()
pylab.subplot(211)
pylab.stem(x)
pylab.ylabel('x')
pylab.subplot(212)
pylab.stem(y2)
pylab.ylabel('y')
pylab.xlabel('samples')
print("Generating the opening chord of Hard day's night by The Beatles ...")
Fs, T, chord = generate_cord()
pylab.figure()
pylab.plot(pylab.arange(0.0, T, 1.0/Fs), chord)
pylab.xlabel('time (sec)')
pylab.title('First Chord of Hard Days Night')
print("Writing the chord to chord.wav ...")
C = max(pylab.absolute(chord))
scipy.io.wavfile.write("chord.wav", Fs,
pylab.int16((2**15 - 1) * chord / C))
print("Done.")
pylab.show()
def calc_quality_metrics(true_cf, true_std, std_bias, preds):
"""
Calculate the CSMF accuracy, absolute error, and relative error for the
provided true and predicted CSMFs.
"""
T, J = pl.array(true_cf).shape
pred_cf = pl.array(preds.mean(0))
true_cf = pl.array(true_cf)
if len(true_std) == 1 and len(true_cf) > 1:
true_std = [true_std[0] for i in range(len(true_cf))]
csmf_accuracy = 1. - pl.absolute(pred_cf -
true_cf).sum(1) / (2 *
(1 - true_cf.min(1)))
abs_err = pl.absolute(pred_cf - true_cf)
rel_err = pl.absolute(pred_cf - true_cf) / true_cf
coverage = calc_coverage(true_cf, preds)
all = pl.np.core.records.fromarrays([
true_cf.ravel(),
pl.array(true_std).ravel(),
(pl.ones([T, J]) * pl.array(std_bias)).ravel(),
abs_err.ravel(),
rel_err.ravel(),
pl.array([[i for j in range(J)] for i in csmf_accuracy]).ravel(),
coverage.ravel(),
pl.array([[j for j in range(J)] for t in range(T)]).ravel(),
pl.array([[t for j in range(J)] for t in range(T)]).ravel()
],
names=[
'true_cf', 'true_std', 'std_bias',
'abs_err', 'rel_err',
'csmf_accuracy', 'coverage',
'cause', 'time'
])
return all
def validate_age_group(model, replicate):
# set random seed for reproducibility
mc.np.random.seed(1234567 + replicate)
N = 30
delta_true = 5.0
pi_true = true_rate_function
m = simulate_age_group_data(N=N, delta_true=delta_true, pi_true=pi_true)
if model == "midpoint_covariate":
fit_midpoint_covariate_model(m)
if model == "alt_midpoint_covariate":
fit_alt_midpoint_covariate_model(m)
elif model == "age_standardizing":
fit_age_standardizing_model(m)
elif model == "age_integrating":
fit_age_integrating_model(m)
elif model == "midpoint_model":
fit_midpoint_model(m)
elif model == "disaggregation_model":
fit_disaggregation_model(m)
else:
raise TypeError, 'Unknown model type: "%s"' % model
# compare estimate to ground truth
import data_simulation
m.mu = pandas.DataFrame(
dict(
true=[pi_true(a) for a in range(101)],
mu_pred=m.vars["mu_age"].stats()["mean"],
sigma_pred=m.vars["mu_age"].stats()["standard deviation"],
)
)
data_simulation.add_quality_metrics(m.mu)
print "\nparam prediction bias: %.5f, MARE: %.3f, coverage: %.2f" % (
m.mu["abs_err"].mean(),
pl.median(pl.absolute(m.mu["rel_err"].dropna())),
m.mu["covered?"].mean(),
)
print
data_simulation.add_quality_metrics(m.mu)
data_simulation.initialize_results(m)
data_simulation.add_to_results(m, "mu")
data_simulation.finalize_results(m)
return m
def amptime(uv, baseline="0_1", pol="xx", applycal=False):
'''
Plots Amp vs Time for a single baseline.
'''
fig = pl.figure()
ax = fig.add_subplot(111)
aipy.scripting.uv_selector(uv, baseline, pol)
for preamble, data, flags in uv.all(raw=True):
uvw, t, (i, j) = preamble
ax.plot(t, pl.average(pl.absolute(data)), 'ks', mec='None', alpha=0.2, ms=5)
hfmt = dates.DateFormatter('%m/%d %H:%M')
ax.xaxis.set_major_locator(dates.HourLocator())
ax.xaxis.set_major_formatter(hfmt)
ax.set_ylim(bottom = 0)
pl.xticks(rotation='vertical')
def fit(model):
emp_priors = model.emp_priors
## Then fit the model and compare the estimates to the truth
model.vars = {}
model.vars['p'] = data_model.data_model('p', model, 'p', 'all', 'total', 'all', None, emp_priors['p', 'mu'], emp_priors['p', 'sigma'])
model.map, model.mcmc = fit_model.fit_data_model(model.vars['p'], iter=5000, burn=2000, thin=25, tune_interval=100)
#model.map, model.mcmc = fit_model.fit_data_model(model.vars['p'], iter=101, burn=0, thin=1, tune_interval=100)
#graphics.plot_one_ppc(model.vars['p'], 'p')
#graphics.plot_convergence_diag(model.vars)
graphics.plot_one_type(model, model.vars['p'], emp_priors, 'p')
pl.plot(model.a, model.pi_age_true, 'b--', linewidth=3, alpha=.5, label='Truth')
pl.legend(fancybox=True, shadow=True, loc='upper left')
pl.title('Heterogeneity %s'%model.parameters['p']['heterogeneity'])
pl.show()
model.input_data['mu_pred'] = model.vars['p']['p_pred'].stats()['mean']
model.input_data['sigma_pred'] = model.vars['p']['p_pred'].stats()['standard deviation']
data_simulation.add_quality_metrics(model.input_data)
model.delta = pandas.DataFrame(dict(true=[model.delta_true]))
model.delta['mu_pred'] = pl.exp(model.vars['p']['eta'].trace()).mean()
model.delta['sigma_pred'] = pl.exp(model.vars['p']['eta'].trace()).std()
data_simulation.add_quality_metrics(model.delta)
print 'delta'
print model.delta
print '\ndata prediction bias: %.5f, MARE: %.3f, coverage: %.2f' % (model.input_data['abs_err'].mean(),
pl.median(pl.absolute(model.input_data['rel_err'].dropna())),
model.input_data['covered?'].mean())
model.mu = pandas.DataFrame(dict(true=model.pi_age_true,
mu_pred=model.vars['p']['mu_age'].stats()['mean'],
sigma_pred=model.vars['p']['mu_age'].stats()['standard deviation']))
data_simulation.add_quality_metrics(model.mu)
data_simulation.initialize_results(model)
data_simulation.add_to_results(model, 'delta')
data_simulation.add_to_results(model, 'mu')
data_simulation.add_to_results(model, 'input_data')
data_simulation.finalize_results(model)
print model.results
def _corrIntensity(self, laserNum, intensity, dist):
#iScale = self.calib.maxIntensity - self.calib.minIntensity
focalOffset = 256 * (
1 - self.calib.caliParams[laserNum].focalDist / 13100)**2
corrIntensity = intensity + self.calib.caliParams[
laserNum].focalSlope * pl.absolute(focalOffset - 256 *
(1 - dist / 65535)**2)
if corrIntensity < self.calib.minIntensity:
corrIntensity = self.calib.minIntensity
if corrIntensity > self.calib.maxIntensity:
corrIntensity = self.calib.maxIntensity
corrIntensity = (corrIntensity -
self.calib.minIntensity) / self.calib.maxIntensity
return corrIntensity
def calculate_1d_sussix_spectrum(turn, window_width, x, xp, qx):
macroparticlenumber = len(x)
tunes = plt.zeros(macroparticlenumber)
# Initialise Sussix object
SX = PySussix.Sussix()
SX.sussix_inp(nt1=1, nt2=window_width, idam=1, ir=0, tunex=qx)
n_particles_to_analyse_10th = int(macroparticlenumber/10)
print 'Running SUSSIX analysis ...'
for i in xrange(macroparticlenumber):
if not i%n_particles_to_analyse_10th: print ' Particle', i
SX.sussix(x[i,turn:turn+window_width], xp[i,turn:turn+window_width],
x[i,turn:turn+window_width], xp[i,turn:turn+window_width],
x[i,turn:turn+window_width], xp[i,turn:turn+window_width]) # this line is not used by sussix!
tunes[i] = plt.absolute(SX.ox[plt.argmax(SX.ax)])
return tunes
def validate_age_group(model, replicate):
# set random seed for reproducibility
mc.np.random.seed(1234567 + replicate)
N = 30
delta_true = 5.
pi_true = true_rate_function
m = simulate_age_group_data(N=N, delta_true=delta_true, pi_true=pi_true)
if model == 'midpoint_covariate':
fit_midpoint_covariate_model(m)
if model == 'alt_midpoint_covariate':
fit_alt_midpoint_covariate_model(m)
elif model == 'age_standardizing':
fit_age_standardizing_model(m)
elif model == 'age_integrating':
fit_age_integrating_model(m)
elif model == 'midpoint_model':
fit_midpoint_model(m)
elif model == 'disaggregation_model':
fit_disaggregation_model(m)
else:
raise TypeError, 'Unknown model type: "%s"' % model
# compare estimate to ground truth
import data_simulation
m.mu = pandas.DataFrame(
dict(true=[pi_true(a) for a in range(101)],
mu_pred=m.vars['mu_age'].stats()['mean'],
sigma_pred=m.vars['mu_age'].stats()['standard deviation']))
data_simulation.add_quality_metrics(m.mu)
print '\nparam prediction bias: %.5f, MARE: %.3f, coverage: %.2f' % (
m.mu['abs_err'].mean(), pl.median(pl.absolute(
m.mu['rel_err'].dropna())), m.mu['covered?'].mean())
print
data_simulation.add_quality_metrics(m.mu)
data_simulation.initialize_results(m)
data_simulation.add_to_results(m, 'mu')
data_simulation.finalize_results(m)
return m
def validate_age_group(model, replicate):
# set random seed for reproducibility
mc.np.random.seed(1234567+replicate)
N = 30
delta_true = 5.
pi_true = true_rate_function
m = simulate_age_group_data(N=N, delta_true=delta_true, pi_true=pi_true)
if model == 'midpoint_covariate':
fit_midpoint_covariate_model(m)
elif model == 'age_standardizing':
fit_age_standardizing_model(m)
elif model == 'age_integrating':
fit_age_integrating_model(m)
elif model == 'midpoint_model':
fit_midpoint_model(m)
elif model == 'disaggregation_model':
fit_disaggregation_model(m)
else:
raise TypeError, 'Unknown model type: "%s"' % model
# compare estimate to ground truth
import data_simulation
m.mu = pandas.DataFrame(dict(true=[pi_true(a) for a in range(101)],
mu_pred=m.vars['mu_age'].stats()['mean'],
lb_pred=m.vars['mu_age'].stats()['95% HPD interval'][:,0],
ub_pred=m.vars['mu_age'].stats()['95% HPD interval'][:,1]))
data_simulation.add_quality_metrics(m.mu)
print '\nparam prediction bias: %.5f, MARE: %.3f, coverage: %.2f' % (m.mu['abs_err'].mean(),
pl.median(pl.absolute(m.mu['rel_err'].dropna())),
m.mu['covered?'].mean())
print
data_simulation.add_quality_metrics(m.mu)
data_simulation.initialize_results(m)
data_simulation.add_to_results(m, 'mu')
data_simulation.finalize_results(m)
return m
def filter_cosmic_rays(spectrum, error_thr=10., filter_size=5):
"""
Filters out cosmic rays from a 1D spectrum (simple spike detection algorithm).
Args:
spectrum (numpy array): a 1D numpy array with spectrum data
error_thr (float, optional): spike detection threshold. If the distance from smoothened spectrum to real
spectrum is greater than error_thr, data will be replaced by smoothened spectrum.
filter_size (int, optional): number of pixels of the smoothening window.
Returns:
numpy array: the spectrum corrected (spikes removed).
"""
spectrum_smooth = scipy.signal.medfilt(spectrum, filter_size)
bad_pixels = pl.absolute(spectrum - spectrum_smooth) > float(error_thr)
spectrum_corr = spectrum.copy()
spectrum_corr[bad_pixels] = spectrum_smooth[bad_pixels]
return spectrum_corr
def _cqft_intensified(self):
"""
::
Constant-Q Fourier transform using only max abs(STFT) value in each band
"""
if not self._have_stft:
if not self._stft():
return False
self._make_log_freq_map()
r,b=self.Q.shape
b,c=self.STFT.shape
self.CQFT=P.zeros((r,c))
for i in P.arange(r):
for j in P.arange(c):
self.CQFT[i,j] = (self.Q[i,:]*P.absolute(self.STFT[:,j])).max()
self._have_cqft=True
self._is_intensified=True
self.inverse=self.icqft
self.X=self.CQFT
return True
def start(self):
self.format_data()
self.y_data = gen(self.shape_cb.currentText()) * pl.absolute(
self.real_high - self.real_low) / 2 + self.real_off
self.x_data = pl.linspace(0, 1 / self.real_freq, pl.size(self.y_data))
self.ax.clear()
self.ax.plot(self.x_data * 1000, self.y_data)
print len(self.x_data)
print len(self.y_data)
self.canvas.draw()
if mode == 'has_visa':
self.inst.write('source1:function:shape ' +
self.shape_cb.currentText())
self.inst.write('source1:frequency:fixed ' +
self.freq_text.text() + self.freq_cb.currentText())
self.inst.write('source1:voltage:level:immediate:high ' +
self.high_text.text() + self.high_cb.currentText())
self.inst.write('source1:voltage:level:immediate:low ' +
self.low_text.text() + self.low_cb.currentText())
self.inst.write('source1:voltage:level:immediate:offset ' +
self.off_text.text() + self.off_cb.currentText())
def _cqft(self):
"""
::
Constant-Q Fourier transform.
"""
if not self._power():
return False
fp = self._check_feature_params()
if self.intensify:
self._cqft_intensified()
else:
self._make_log_freq_map()
self.CQFT=P.sqrt(P.array(P.mat(self.Q)*P.mat(P.absolute(self.STFT)**2)))
self._is_intensified=False
self._have_cqft=True
if self.verbosity:
print "Extracted CQFT: intensified=%d" %self._is_intensified
self.inverse=self.icqft
self.X=self.CQFT
return True
def CalculateGrowthInternal(self, times, levels):
res_mat = self.CalculateRates(times, levels)
max_i = self.FindMaximumGrowthRate(res_mat)
t_mat = pylab.matrix(times).T
count_matrix = pylab.matrix(levels).T
norm_counts = count_matrix - min(levels)
abs_res_mat = pylab.array(res_mat)
abs_res_mat[:, 0] = pylab.absolute(res_mat[:, 0])
order = abs_res_mat[:, 0].argsort(axis=0)
stationary_indices = filter(lambda x: x >= max_i, order)
stationary_indices = pylab.array(
filter(lambda x: res_mat[x, 3] > 0, stationary_indices))
stationary_level = 0.0
if stationary_indices.any():
stationary_level = res_mat[stationary_indices[0], 3]
pylab.hold(True)
pylab.plot(times, norm_counts)
pylab.plot(times, res_mat[:, 0])
pylab.plot([0, times.max()], [self.minimum_level, self.minimum_level],
'r--')
pylab.plot([0, times.max()], [self.maximum_level, self.maximum_level],
'r--')
i_range = range(max_i, max_i + self.window_size)
x = pylab.hstack([t_mat[i_range, 0], pylab.ones((len(i_range), 1))])
y = x * pylab.matrix(res_mat[max_i, 0:2]).T
pylab.plot(x[:, 0], pylab.exp(y), 'k:', linewidth=4)
#pylab.plot([0, max(times)], [stationary_level, stationary_level], 'k-')
pylab.yscale('log')
pylab.legend(['OD', 'growth rate', 'threshold', 'fit'])
#, 'stationary'])
return res_mat[max_i, 0], stationary_level