def plot_2vfunc_domain(plot_lst):
inf_lst = extract_information2v(plot_lst)
fig = plt.figure(figsize=(10, 10))
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
# fun_name = inf_lst[1]
for i in inf_lst:
bound_color = i[0]
# print i
xy_x = i[1][0][0][0]
xy_y = i[1][0][0][1]
lgt = i[1][0][1]
hgt = i[1][0][2]
rect = plt.Rectangle((xy_x, xy_y),
lgt,
hgt,
fill=True,
facecolor=bound_color,
edgecolor='red',
linewidth=0)
ax.add_patch(rect)
# plt.ylim((-0.25, 0.25))
plt.xlim((-2150, 2150))
plt.ylim((-2150, 2150))
plt.show()
def plot_1func_domain(plot_lst):
inf_lst = extract_information(plot_lst)
fig = plt.figure(figsize=(25, 2))
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
for i in inf_lst:
bound_color = i[0]
print i
xy_x = i[1][0][0][0]
xy_y = i[1][0][0][1]
lgt = i[1][0][1]
rect = plt.Rectangle((xy_x, xy_y),
lgt,
0.5,
fill=True,
facecolor=bound_color,
edgecolor=bound_color,
linewidth=0)
ax.add_patch(rect)
plt.ylim((-0.25, 0.25))
plt.xlim((-2150, 2150))
plt.yticks([])
# plt.savefig("graph2/" + fun_name + ".pdf", format="pdf")
plt.savefig("papergraph/" + "erfbdvals.eps", format="eps")
# plt.close()
plt.show()
def myplot(P):
plt.xkcd()
fig = plt.figure()
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
plt.axhline(y=0, color='#636363')
plt.axvline(x=0, color='#636363')
ax.set(xlabel='$x$', ylabel='$f(x)$', title='Newton Method')
x = arange(P - 2 * abs(P), P + 2 * abs(P), 0.01)
y = [f(i) for i in x]
ax.plot(x, y, label='$f(x)$')
ax.plot([P], [0], 'ro-', label='root')
ax.legend()
plt.show()
def test_SubplotZero():
fig = plt.figure()
ax = SubplotZero(fig, 1, 1, 1)
fig.add_subplot(ax)
ax.axis["xzero"].set_visible(True)
ax.axis["xzero"].label.set_text("Axis Zero")
for n in ["top", "right"]:
ax.axis[n].set_visible(False)
xx = np.arange(0, 2 * np.pi, 0.01)
ax.plot(xx, np.sin(xx))
ax.set_ylabel("Test")
def dyhotomia(request):
if 1:
postSave = float(request.POST['formA'])
postS(postSave)
l = 0.0
lmax = 0.6
E = 1e-4
y = 0.0
f = plt.figure(1)
ax = SubplotZero(f, 111)
f.add_subplot(ax)
x = l
xmax = lmax
Ua = 0.0
U = 0.0
while (np.abs(l - lmax) >= E):
Ua = func(l)
U = func((l + lmax) / 2)
if Ua * U > 0:
l = (l + lmax) / 2
else:
lmax = (l + lmax) / 2
y = (l + lmax) / 2
for direction in ["xzero", "yzero"]:
# adds arrows at the ends of each axis
ax.axis[direction].set_axisline_style("-|>")
# adds X and Y-axis from the origin
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
# hides borders
ax.axis[direction].set_visible(False)
x = np.linspace(x, xmax, 100)
ax.plot(y, funcg(y), 'o', x, funcg(x))
print(y)
print(Ua)
print(U)
print(I)
print(a)
buf = io.BytesIO()
plt.grid(True)
plt.savefig(buf, format='svg')
plt.close(f)
response = HttpResponse(buf.getvalue(), content_type='image/svg+xml')
return response
def rectangle(a, b, n):
if 1:
f = plt.figure(1)
ax = SubplotZero(f, 111)
f.add_subplot(ax)
dx = (b - a) / float(n)
total = 0
for k in range(0, n):
total = total + func((a + (k * dx)))
return dx * total
def dyhotomia(request):
if 1:
a = float(request.POST['a'])
b = float(request.POST['b'])
e = float(request.POST['e'])
y=0.0
i=a
f = plt.figure(1)
ax = SubplotZero(f, 111)
f.add_subplot(ax)
mas = np.arange(a, b, e)
x = a
xmax = b
while(np.abs(a - b)>=e):
Ua = func(a)
U = func((a+b)/2)
if Ua*U > 0:
a = (a+b)/2
else:
b = (a+b)/2
y = (a+b)/2
for direction in ["xzero", "yzero"]:
# adds arrows at the ends of each axis
ax.axis[direction].set_axisline_style("-|>")
# adds X and Y-axis from the origin
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
# hides borders
ax.axis[direction].set_visible(False)
x = np.linspace(x, xmax, 100)
ax.plot(y, func(y), 'o', x, func(x))
print(y)
buf = io.BytesIO()
plt.grid(True)
plt.savefig(buf, format='svg')
plt.close(f)
response = HttpResponse(buf.getvalue(), content_type='image/svg+xml')
return response
def mplimage(request):
if 1:
postSave = float(request.POST['formA'])
postS(postSave)
l = 0
lmax = 0.6
E = 1e-4
y = 0.0
iu = 0
f = plt.figure(1)
ax = SubplotZero(f, 111)
f.add_subplot(ax)
mas = np.arange(l, lmax, E)
for i in mas:
y1 = func(i)
y2 = func(i + E)
if y1 * y2 < 0:
iu = (i + i + E) / 2
break
for direction in ["xzero", "yzero"]:
# adds arrows at the ends of each axis
ax.axis[direction].set_axisline_style("-|>")
# adds X and Y-axis from the origin
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
# hides borders
ax.axis[direction].set_visible(False)
x = np.linspace(l, lmax, 100)
ax.plot(iu, funcg(iu), 'o', x, funcg(x))
print(iu)
print(y1)
print(y2)
print(I)
buf = io.BytesIO()
plt.grid(True)
plt.savefig(buf, format='svg')
plt.close(f)
response = HttpResponse(buf.getvalue(), content_type='image/svg+xml')
return response
def newton(request):
if 1:
postSave = float(request.POST['formA'])
postS(postSave)
l = 0.0
lmax = 0.6
E = 1e-4
f = plt.figure(1)
ax = SubplotZero(f, 111)
f.add_subplot(ax)
x = l
xmax = lmax
if (func(l) * d2Func(l) > 0):
x0 = l
else:
x0 = lmax
xn = x0 - func(x0) / dFunc(x0)
while (np.abs(x0 - xn) > E):
x0 = xn
xn = x0 - func(x0) / dFunc(x0)
for direction in ["xzero", "yzero"]:
# adds arrows at the ends of each axis
ax.axis[direction].set_axisline_style("-|>")
# adds X and Y-axis from the origin
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
# hides borders
ax.axis[direction].set_visible(False)
x = np.linspace(x, xmax, 100)
ax.plot(xn, funcg(xn), 'o', x, funcg(x))
print("newton", xn)
buf = io.BytesIO()
plt.grid(True)
plt.savefig(buf, format='svg')
plt.close(f)
response = HttpResponse(buf.getvalue(), content_type='image/svg+xml')
return response
def newton(request):
if 1:
a = float(request.POST['a'])
b = float(request.POST['b'])
e = float(request.POST['e'])
y=0.0
i=a
f = plt.figure(1)
ax = SubplotZero(f, 111)
f.add_subplot(ax)
x = a
xmax = b
if(func(a)*d2Func(a) > 0):
x0 = a
else: x0 = b
xn = x0 - func(x0) / dFunc(x0)
while(np.abs(x0 - xn) > e):
x0 = xn
xn = x0 - func(x0) / dFunc(x0)
for direction in ["xzero", "yzero"]:
# adds arrows at the ends of each axis
ax.axis[direction].set_axisline_style("-|>")
# adds X and Y-axis from the origin
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
# hides borders
ax.axis[direction].set_visible(False)
x = np.linspace(x, xmax, 100)
ax.plot(xn, func(xn), 'o', x, func(x))
print(xn)
buf = io.BytesIO()
plt.grid(True)
plt.savefig(buf, format='svg')
plt.close(f)
response = HttpResponse(buf.getvalue(), content_type='image/svg+xml')
return response
# Create your views here.
def nice():
x, y, z = symbols('x y z')
init_printing(use_unicode=True)
rango_1 = float(input("rango 1: "))
rango_2 = float(input("rango 2: "))
resolution = int(input("resolucion: "))
print("formula")
function = input()
results=[]
value_x = []
value_y = []
cosa = ((rango_2 - rango_1) / resolution)
for x_n in np.arange(rango_1,rango_2, cosa):
cosa2 = (rango_1 + (((rango_2 - rango_1) / 2 * resolution) * (2*x_n - 1)))
value_y.append(cosa * sympify(function).evalf(subs={x: cosa2}))
#value_y.append(sympify("x**2").evalf(subs={x: x_n}))
for y_n in np.arange(rango_1,rango_2, cosa):
value_x.append(y_n)
print(value_x,value_y)
fig = plt.figure()
ax = SubplotZero(fig,111)
fig.add_subplot(ax)
for direction in ["xzero","yzero"]:
ax.axis[direction].set_axisline_style("-|>")
ax.axis[direction].set_visible(True)
for direction in ["left","right","bottom","top"]:
ax.axis[direction].set_visible(False)
ax.y(value_x, value_y)
plt.savefig('foo.svg')
def plot_func(section, func):
fig = plt.figure(1, (10, 6))
ax = SubplotZero(fig, 1, 1, 1)
fig.add_subplot(ax)
x0 = linspace(section[0], section[1], 1000)
y0 = []
for i in range(1000):
y0.append(func(x0[i]))
ax.axis["xzero"].set_visible(True)
ax.axis["xzero"].label.set_color('green')
ax.axis["yzero"].set_visible(True)
ax.axis["yzero"].label.set_color('green')
plt.plot(x0, y0, 'r-', color='b')
plt.show()
def mplimage(request):
if 1:
a = float(request.POST['a'])
b = float(request.POST['b'])
e = float(request.POST['e'])
y=0.0
i=a
f = plt.figure(1)
ax = SubplotZero(f, 111)
f.add_subplot(ax)
mas = np.arange(a, b, e)
for i in mas:
y1=func(i)
y2=func(i+e)
if y1*y2<0:
y = (i + i+e)/2
for direction in ["xzero", "yzero"]:
# adds arrows at the ends of each axis
ax.axis[direction].set_axisline_style("-|>")
# adds X and Y-axis from the origin
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
# hides borders
ax.axis[direction].set_visible(False)
x = np.linspace(a, b, 100)
ax.plot(y, func(y), 'o', x, func(x))
print(y)
buf = io.BytesIO()
plt.grid(True)
plt.savefig(buf, format='svg')
plt.close(f)
response = HttpResponse(buf.getvalue(), content_type='image/svg+xml')
return response
def creator(self, a, b, c, minn, maxx):
'''A method that creates the graph and adjust the axis.'''
y = list()
x = np.linspace(minn, maxx)
for i in x:
y.append((a * i * i) + (b * i) + c)
fig = plt.figure()
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
ax.axis['xzero'].set_visible(True)
ax.axis['yzero'].set_visible(True)
for i in ["left", "right", "bottom", "top"]:
ax.axis[i].set_visible(False)
plt.plot(x, y)
plt.show()
def plot_func_str(section, expression):
fig = plt.figure(1, (10, 6))
ax = SubplotZero(fig, 1, 1, 1)
fig.add_subplot(ax)
x0 = linspace(section[0], section[1], 1000)
x = symbols('x')
y0 = []
for i in range(1000):
y0.append(sympify(expression).evalf(subs={x: x0[i]}))
ax.axis["xzero"].set_visible(True)
ax.axis["xzero"].label.set_color('green')
ax.axis["yzero"].set_visible(True)
ax.axis["yzero"].label.set_color('green')
plt.plot(x0, y0, 'r-', color='b')
plt.show()
def test_SubplotZero():
fig = plt.figure()
ax = SubplotZero(fig, 1, 1, 1)
fig.add_subplot(ax)
ax.axis["xzero"].set_visible(True)
ax.axis["xzero"].label.set_text("Axis Zero")
for n in ["top", "right"]:
ax.axis[n].set_visible(False)
xx = np.arange(0, 2 * np.pi, 0.01)
ax.plot(xx, np.sin(xx))
ax.set_ylabel("Test")
def calulitos(a_o, b_o, n_o, function):
s_x = symbols("x")
print("funcion a usar ---> ", function)
np.seterr(divide='ignore', invalid='ignore')
f = lambda x: lambdify(s_x, sympify(function), 'numpy')(x)
a = a_o
b = b_o
N = n_o
n = n_o # Use n*N+1 points to plot the function smoothly
xe = np.linspace(a, b, N + 1)
y = f(xe)
X = np.linspace(a, b, n * N + 1)
Y = f(X)
fig = plt.figure()
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
for direction in ["xzero", "yzero"]:
ax.axis[direction].set_axisline_style("-|>")
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
ax.axis[direction].set_visible(False)
plt.subplot(1, 3, 2)
plt.plot(X, Y, color="red")
x_mid = (xe[:-1] + xe[1:]) / 2 # Midpoints
y_mid = f(x_mid)
plt.plot(x_mid, y_mid, color="red")
plt.bar(x_mid, y_mid, width=(b - a) / N, edgecolor='b')
plt.title('Midpoint Riemann Sum, N = {}'.format(N))
plt.savefig('foo.png', dpi=500)
vistas.resultado("foo.png")
def test_SubplotZero():
# Remove this line when this test image is regenerated.
plt.rcParams['text.kerning_factor'] = 6
fig = plt.figure()
ax = SubplotZero(fig, 1, 1, 1)
fig.add_subplot(ax)
ax.axis["xzero"].set_visible(True)
ax.axis["xzero"].label.set_text("Axis Zero")
for n in ["top", "right"]:
ax.axis[n].set_visible(False)
xx = np.arange(0, 2 * np.pi, 0.01)
ax.plot(xx, np.sin(xx))
ax.set_ylabel("Test")
def main():
# データ
x = np.arange(-5, 5, 1)
y = [1.0] * 1000
# プロット
fig = plt.figure()
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
plot_arrow(ax, x, y, 1)
# 表示設定
margin = 0.5
set_display(fig, ax)
ax.set_xlim(x[0] - margin, x[-1] + margin)
ax.set_ylim(-0.2, 1.5)
# ファイル保存
fig.savefig("arrow.png")
# 表示
plt.show()
alphabet[4],
horizontalalignment='center',
verticalalignment='center',
fontsize=16,
fontweight='demibold',
transform=ax.transAxes)
plotting.remove_axis_junk(ax)
t = np.arange(p_net.shape[1]) * PSET.dt * PSET.decimate_q
inds = (t >= T[0]) & (t <= T[1])
ax.plot(t[inds], p_net[i, inds], 'k', lw=1)
ax.set_ylabel(ylabel)
ax.set_xticklabels([])
# panel F. Illustration of 4-sphere volume conductor model geometry
ax = SubplotZero(fig, gs[2, 1])
fig.add_subplot(ax)
ax.set_title('four-sphere volume conductor model')
for direction in ["xzero"]:
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
ax.axis[direction].set_visible(False)
theta = np.linspace(0, np.pi, 31)
# draw some circles:
for i, r, label in zip(range(4), PSET.foursphereParams['radii'],
['brain', 'CSF', 'skull', 'scalp']):
ax.plot(np.cos(theta) * r,
def ellipse():
# theta ranges from 0 to 2pi
npts = 360
theta = np.linspace(0, 2*np.pi, npts)
e = 0.5
a = 1.0
r = a*(1.0 - e**3)/(1.0 + e*np.cos(theta))
x = r*np.cos(theta)
y = r*np.sin(theta)
# plotting
for n in range(npts):
fig = plt.figure(1)
fig.clear()
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
ax.set_aspect("equal", "datalim")
ax = plt.gca()
ax.set_aspect("equal", "datalim")
# draw the ellipse
ax.plot(x, y, color="k", linewidth=2)
# draw our current point
ax.scatter([x[n]], [y[n]], color="k", s=75)
# second foci
ax.scatter([-2.0*a*e], [0], color="C0", marker="x", s=200)
# primary foci
ax.scatter([0], [0], color="C1", marker="x", s=200)
# draw lines connecting the foci to the current point
ax.plot([0, x[n]], [0, y[n]], color="C1", zorder=100, linewidth=2)
ax.plot([-2.0*a*e, x[n]], [0, y[n]], color="C0", zorder=100, linewidth=2)
ax.set_xlim(-2.5, 1.5)
ax.set_ylim(-2., 2.)
len1 = np.sqrt((x[n] - 0)**2 + (y[n] - 0)**2)
len2 = np.sqrt((x[n] - (-2.0*a*e))**2 + (y[n] - 0)**2)
ax.set_title("Ellipse, eccenticity = {:5.3f}".format(e))
ax.text(-1.5, -1.25, "r length: {:5.3f}".format(len1), color="C1")
ax.text(-1.5, -1.5, "r' length: {:5.3f}".format(len2), color="C0")
ax.text(-1.5, -1.75, "r + r' = {:5.3f}".format(len1 + len2))
for direction in ["xzero", "yzero"]:
# adds arrows at the ends of each axis
ax.axis[direction].set_axisline_style("-|>")
# adds X and Y-axis from the origin
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
# hides borders
ax.axis[direction].set_visible(False)
fig.set_size_inches(7.2, 7.2)
fig.set_size_inches(7.2,7.2)
plt.savefig("ellipsedraw_{:03d}.png".format(n))
ax0.axis('off')
ax0.set_title('extracellular potential')
ax1 = fig.add_subplot(gs[:6, 1], aspect='equal') # dipole moment ill.
ax1.axis('off')
ax1.set_title('extracellular potential')
ax2 = fig.add_subplot(gs[:6, 2], aspect='equal') # dipole moment ill.
ax2.axis('off')
ax2.set_title('magnetic field')
# ax3 = fig.add_subplot(gs[0, 3], aspect='equal') # spherical shell model ill.
# ax3.set_title('4-sphere volume conductor')
# ax4 = fig.add_subplot(gs[1, 3],
# aspect='equal'
# ) # MEG/EEG forward model ill.
# ax4.set_title('EEG and MEG signal detection')
ax3 = SubplotZero(fig, gs[7:, 0])
fig.add_subplot(ax3)
ax3.set_title('4-sphere volume conductor', verticalalignment='bottom')
ax4 = fig.add_subplot(gs[7:, 1]) # EEG
ax4.set_title('scalp electric potential $\phi_\mathbf{p}(\mathbf{r})$')
ax5 = fig.add_subplot(gs[7:, 2], sharey=ax4) # MEG
# ax5.set_title('scalp magnetic field')
#morphology - line sources for panels A and B
zips = []
xz = cell.get_idx_polygons()
for x, z in xz:
zips.append(list(zip(x, z)))
for ax in [ax0]:
polycol = PolyCollection(zips,
linewidths=(0.5),
"""
================
Axis line styles
================
This example shows some configurations for axis style.
"""
from mpl_toolkits.axisartist.axislines import SubplotZero
import matplotlib.pyplot as plt
import numpy as np
if 1:
fig = plt.figure()
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
for direction in ["xzero", "yzero"]:
# adds arrows at the ends of each axis
ax.axis[direction].set_axisline_style("-|>")
# adds X and Y-axis from the origin
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
# hides borders
ax.axis[direction].set_visible(False)
x = np.linspace(-0.5, 1., 100)
ax.plot(x, np.sin(x * np.pi))
"""
================
Axis line styles
================
This example shows some configurations for axis style.
"""
from mpl_toolkits.axisartist.axislines import SubplotZero
import matplotlib.pyplot as plt
import numpy as np
fig = plt.figure()
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
for direction in ["xzero", "yzero"]:
# adds arrows at the ends of each axis
ax.axis[direction].set_axisline_style("-|>")
# adds X and Y-axis from the origin
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
# hides borders
ax.axis[direction].set_visible(False)
x = np.linspace(-0.5, 1., 100)
ax.plot(x, np.sin(x*np.pi))
# -*- coding: utf-8 -*-
"""
Created on Mon May 11 20:25:31 2020
@author: edels
"""
import matplotlib.pyplot as plt
import numpy as np
from mpl_toolkits.axisartist.axislines import SubplotZero
t = np.linspace(0, 2 * np.pi, 15)
V = np.sin(t)
fig = plt.figure(figsize=(1, 1))
ax = SubplotZero(fig, 1, 1, 1)
fig.add_subplot(ax)
ax.axis["xzero"].set_visible(True)
for n in ["bottom", "top", "right"]:
ax.axis[n].set_visible(False)
# Step graph
ax.step(t, V, color="black", linewidth=2)
# Stem graph
#(markerline, stemlines, baselines) = ax.stem(t, V, linefmt = "black", basefmt = " ", use_line_collection = True)
#plt.setp(markerline, color = "black", markersize = 3) # Allow to edit stem markerline color
# Continuous line graph
#ax.plot(t, V, color = "black", linewidth = 2)
def ellipse():
# theta ranges from 0 to 2pi
npts = 360
theta = np.linspace(0, 2 * np.pi, npts)
# well go through a range of eccentricities (forwards and backwards)
n_ecc = 200
e_tmp = np.linspace(0, 0.95, n_ecc)
ecc = np.zeros(2 * n_ecc)
ecc[0:n_ecc] = e_tmp[:]
ecc[n_ecc:] = e_tmp[::-1]
a = 1.0
for n, e in enumerate(ecc):
r = a * (1.0 - e**2) / (1.0 + e * np.cos(theta))
x = r * np.cos(theta)
y = r * np.sin(theta)
# plotting
fig = plt.figure(1)
fig.clear()
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
ax.set_aspect("equal", "datalim")
ax.plot(x, y, color="k", linewidth=2)
# second foci
ax.scatter([-2.0 * a * e], [0], color="C0", marker="x", s=100)
# primary foci
ax.scatter([0], [0], color="C1", marker="x", s=100)
ax.set_xlim(-2.5, 1.5)
ax.set_ylim(-2., 2.)
ax.text(-2.0, -1.5, "a = %5.3f, e = %6.4f" % (a, e))
for direction in ["xzero", "yzero"]:
# adds arrows at the ends of each axis
ax.axis[direction].set_axisline_style("-|>")
# adds X and Y-axis from the origin
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
# hides borders
ax.axis[direction].set_visible(False)
fig.set_size_inches(7.2, 7.2)
plt.savefig("ellipse_{:03d}.png".format(n))
f[i] = f[i].replace(',', '.').strip("\n")
f[i] = f[i].split('\t')
accumulator.append((np.radians(float(f[i][0])), float(f[i][1])))
a = []
b = []
theta = []
rho = []
N = len(accumulator)
for i in range(0, N):
theta.append(accumulator[i][0])
rho.append(accumulator[i][1])
fig = plt.figure(1)
ax = SubplotZero(fig, 111)
#ax.set_facecolor((0, 0, 0))
fig.add_subplot(ax)
#ax.axhline(color="yellow")
#ax.axvline(color="yellow")
#ax.set_xticks([1])
#ax.set_yticks([1])
#ax.set_xticklabels(['x'])
#ax.set_yticklabels(['y'])
#ax.axis("equal")
for direction in ["xzero", "yzero"]:
ax.axis[direction].set_axisline_style("-|>")
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
ax.axis[direction].set_visible(False)
#%%
import matplotlib.pyplot as plt
from mpl_toolkits.axisartist.axislines import SubplotZero
import numpy as np
degrees = np.load('data/degrees_MNIST.npy').transpose()
x = np.arange(6000)
for i in range(4):
plt.plot(x, degrees[i])
plt.title('Layer %i ' % (i + 1))
plt.xlabel('# of update steps')
plt.ylabel('Degrees (°)')
plt.ylim(40, 100)
plt.savefig('img/MNIST_DFA_l%i.png' % (i + 1))
plt.close()
#%%
showrange = 6000
fig = plt.figure(1)
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
x = np.arange(showrange)
lines = []
for i in range(4):
l, = ax.plot(x, degrees[i][:showrange])
lines.append(l)
ax.legend(lines, ['layer %i' % i for i in range(4)])
ax.set_xlabel('# of update steps')
ax.set_ylabel('Degrees (°)')
plt.savefig('img/MNIST_DFA_%isteps.png' % showrange)
def ellipse():
# theta ranges from 0 to 2pi
npts = 360
theta = np.linspace(0, 2 * np.pi, npts)
e = 0.5
a = 1.0
r = a * (1.0 - e**3) / (1.0 + e * np.cos(theta))
x = r * np.cos(theta)
y = r * np.sin(theta)
# plotting
for n in range(npts):
fig = plt.figure(1)
fig.clear()
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
ax.set_aspect("equal", "datalim")
ax = plt.gca()
ax.set_aspect("equal", "datalim")
# draw the ellipse
ax.plot(x, y, color="k", linewidth=2)
# draw our current point
ax.scatter([x[n]], [y[n]], color="k", s=75)
# second foci
ax.scatter([-2.0 * a * e], [0], color="C0", marker="x", s=200)
# primary foci
ax.scatter([0], [0], color="C1", marker="x", s=200)
# draw lines connecting the foci to the current point
ax.plot([0, x[n]], [0, y[n]], color="C1", zorder=100, linewidth=2)
ax.plot([-2.0 * a * e, x[n]], [0, y[n]],
color="C0",
zorder=100,
linewidth=2)
ax.set_xlim(-2.5, 1.5)
ax.set_ylim(-2., 2.)
len1 = np.sqrt((x[n] - 0)**2 + (y[n] - 0)**2)
len2 = np.sqrt((x[n] - (-2.0 * a * e))**2 + (y[n] - 0)**2)
ax.set_title("Ellipse, eccenticity = {:5.3f}".format(e))
ax.text(-1.5, -1.25, "r length: {:5.3f}".format(len1), color="C1")
ax.text(-1.5, -1.5, "r' length: {:5.3f}".format(len2), color="C0")
ax.text(-1.5, -1.75, "r + r' = {:5.3f}".format(len1 + len2))
for direction in ["xzero", "yzero"]:
# adds arrows at the ends of each axis
ax.axis[direction].set_axisline_style("-|>")
# adds X and Y-axis from the origin
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
# hides borders
ax.axis[direction].set_visible(False)
fig.set_size_inches(7.2, 7.2)
fig.set_size_inches(7.2, 7.2)
plt.savefig("ellipsedraw_{:03d}.png".format(n))
"""
===============
Simple Axisline
===============
"""
import matplotlib.pyplot as plt
from mpl_toolkits.axisartist.axislines import SubplotZero
if 1:
fig = plt.figure(1)
fig.subplots_adjust(right=0.85)
ax = SubplotZero(fig, 1, 1, 1)
fig.add_subplot(ax)
# make right and top axis invisible
ax.axis["right"].set_visible(False)
ax.axis["top"].set_visible(False)
# make xzero axis (horizontal axis line through y=0) visible.
ax.axis["xzero"].set_visible(True)
ax.axis["xzero"].label.set_text("Axis Zero")
ax.set_ylim(-2, 4)
ax.set_xlabel("Label X")
ax.set_ylabel("Label Y")
# or
#ax.axis["bottom"].label.set_text("Label X")
#ax.axis["left"].label.set_text("Label Y")
horizontalalignment='center',
verticalalignment='center',
fontsize=16, fontweight='demibold',
transform=ax.transAxes)
plotting.remove_axis_junk(ax)
t = np.arange(p_net.shape[1])*PSET.dt*PSET.decimate_q
inds = (t >= T[0]) & (t <= T[1])
ax.plot(t[inds], p_net[i, inds], 'k', lw=1)
ax.set_ylabel(ylabel)
ax.set_xticklabels([])
# panel F. Illustration of 4-sphere volume conductor model geometry
ax = SubplotZero(fig, gs[2, 1])
fig.add_subplot(ax)
ax.set_title('four-sphere volume conductor model')
for direction in ["xzero"]:
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
ax.axis[direction].set_visible(False)
theta = np.linspace(0, np.pi, 31)
# draw some circles:
for i, r, label in zip(range(4), PSET.foursphereParams['radii'], ['brain', 'CSF', 'skull', 'scalp']):
ax.plot(np.cos(theta)*r, np.sin(theta)*r, 'C{}'.format(i), label=label + r', $r_%i=%i$ mm' % (i+1, r / 1000), clip_on=False)
def plot_point(self, point):
x_limit = 10
y_limit = 5
fig = plt.figure(1, figsize=(8, 4))
ax = SubplotZero(fig, 1, 1, 1)
fig.add_subplot(ax)
ax.grid(color='#eeeeee', linestyle='-', linewidth=2)
ax.set_xticks(np.arange(-1 * x_limit, x_limit, 1))
ax.set_xlim(-1 * x_limit, x_limit)
ax.set_yticks(np.arange(-1 * y_limit, y_limit, 1))
ax.set_ylim(-1 * y_limit, y_limit)
ax.axis['xzero'].set_axisline_style('-|>')
ax.axis['xzero'].set_visible(True)
ax.axis["xzero"].label.set_text('$x_1$')
ax.axis['yzero'].set_axisline_style('-|>')
ax.axis['yzero'].set_visible(True)
ax.axis["yzero"].label.set_text('$x_2$')
ax.plot(*point, 'ro', label='$x^{*}$')
ax.legend()
from mpl_toolkits.axisartist.axislines import SubplotZero
import matplotlib.pyplot as plt
import numpy as np
fig = plt.figure(1)
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
for direction in ["xzero", "yzero"]:
# adds arrows at the ends of each axis
ax.axis[direction].set_axisline_style("-|>")
# adds X and Y-axis from the origin
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
# hides borders
ax.axis[direction].set_visible(False)
plt.text(-2, 2, r"y=kx+b", horizontalalignment='center', fontsize=20)
x = np.linspace(-2, 2, 100)
k = -1
b = 0
y = k * x + b
ax.plot(x, y)
plt.show()
import matplotlib.pyplot as plt
from mpl_toolkits.axisartist.axislines import SubplotZero
import numpy as np
fig = plt.figure(1, (4,3))
# a subplot with two additiona axis, "xzero" and "yzero". "xzero" is
# y=0 line, and "yzero" is x=0 line.
ax = SubplotZero(fig, 1, 1, 1)
fig.add_subplot(ax)
# make xzero axis (horizontal axis line through y=0) visible.
ax.axis["xzero"].set_visible(True)
ax.axis["xzero"].label.set_text("Axis Zero")
# make other axis (bottom, top, right) invisible.
for n in ["bottom", "top", "right"]:
ax.axis[n].set_visible(False)
xx = np.arange(0, 2*np.pi, 0.01)
ax.plot(xx, np.sin(xx))
plt.show()
"""
===============
Simple Axisline
===============
"""
import matplotlib.pyplot as plt
from mpl_toolkits.axisartist.axislines import SubplotZero
fig = plt.figure(1)
fig.subplots_adjust(right=0.85)
ax = SubplotZero(fig, 1, 1, 1)
fig.add_subplot(ax)
# make right and top axis invisible
ax.axis["right"].set_visible(False)
ax.axis["top"].set_visible(False)
# make xzero axis (horizontal axis line through y=0) visible.
ax.axis["xzero"].set_visible(True)
ax.axis["xzero"].label.set_text("Axis Zero")
ax.set_ylim(-2, 4)
ax.set_xlabel("Label X")
ax.set_ylabel("Label Y")
# or
#ax.axis["bottom"].label.set_text("Label X")
#ax.axis["left"].label.set_text("Label Y")
# make new (right-side) yaxis, but wth some offset
Description: matplotlib 绘制 sinx
"""
import matplotlib.pyplot as plt
import numpy as np
from mpl_toolkits.axisartist.axislines import SubplotZero
if __name__ == '__main__':
# 坐标点
x = np.linspace(0, 2 * np.pi, num=256)
y = np.sin(x)
# 坐标轴
fig = plt.figure(1)
ax = SubplotZero(fig, 1, 1, 1)
fig.add_subplot(ax)
for direction in ["xzero", "yzero"]:
ax.axis[direction].set_axisline_style("-|>")
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
ax.axis[direction].set_visible(False)
plt.xticks([0, np.pi / 2, np.pi, 3 * np.pi / 2, 2 * np.pi],
['$0$', '$\pi/2$', '$\pi$', r'$3\pi/2$', r'$2\pi$'])
# 图像
ax.plot(x, y)
# 标题
ax.set_title('y = sin(x)')
# 展示
ax0.axis('off')
ax0.set_title('extracellular potential')
ax1 = fig.add_subplot(gs[:6, 1], aspect='equal') # dipole moment ill.
ax1.axis('off')
ax1.set_title('extracellular potential')
ax2 = fig.add_subplot(gs[:6, 2], aspect='equal') # dipole moment ill.
ax2.axis('off')
ax2.set_title('magnetic field')
# ax3 = fig.add_subplot(gs[0, 3], aspect='equal') # spherical shell model ill.
# ax3.set_title('4-sphere volume conductor')
# ax4 = fig.add_subplot(gs[1, 3],
# aspect='equal'
# ) # MEG/EEG forward model ill.
# ax4.set_title('EEG and MEG signal detection')
ax3 = SubplotZero(fig, gs[7:, 0])
fig.add_subplot(ax3)
ax3.set_title('4-sphere volume conductor', verticalalignment='bottom')
ax4 = fig.add_subplot(gs[7:, 1]) # EEG
ax4.set_title('scalp electric potential $\phi_\mathbf{p}(\mathbf{r})$')
ax5 = fig.add_subplot(gs[7:, 2], sharey=ax4) # MEG
# ax5.set_title('scalp magnetic field')
#morphology - line sources for panels A and B
zips = []
xz = cell.get_idx_polygons()
for x, z in xz:
zips.append(list(zip(x, z)))
for ax in [ax0]:
polycol = PolyCollection(zips,
linewidths=(0.5),
def ellipse():
# theta ranges from 0 to 2pi
npts = 360
theta = np.linspace(0, 2*np.pi, npts)
# well go through a range of eccentricities (forwards and backwards)
n_ecc = 200
e_tmp = np.linspace(0, 0.95, n_ecc)
ecc = np.zeros(2*n_ecc)
ecc[0:n_ecc] = e_tmp[:]
ecc[n_ecc:] = e_tmp[::-1]
a = 1.0
for n, e in enumerate(ecc):
r = a*(1.0 - e**2)/(1.0 + e*np.cos(theta))
x = r*np.cos(theta)
y = r*np.sin(theta)
# plotting
fig = plt.figure(1)
fig.clear()
ax = SubplotZero(fig, 111)
fig.add_subplot(ax)
ax.set_aspect("equal", "datalim")
ax.plot(x, y, color="k", linewidth=2)
# second foci
ax.scatter([-2.0*a*e], [0], color="C0", marker="x", s=100)
# primary foci
ax.scatter([0], [0],color="C1", marker="x", s=100)
ax.set_xlim(-2.5, 1.5)
ax.set_ylim(-2., 2.)
ax.text(-2.0, -1.5, "a = %5.3f, e = %6.4f" % (a, e))
for direction in ["xzero", "yzero"]:
# adds arrows at the ends of each axis
ax.axis[direction].set_axisline_style("-|>")
# adds X and Y-axis from the origin
ax.axis[direction].set_visible(True)
for direction in ["left", "right", "bottom", "top"]:
# hides borders
ax.axis[direction].set_visible(False)
fig.set_size_inches(7.2, 7.2)
plt.savefig("ellipse_{:03d}.png".format(n))