def test_image():
# Prior to v1.4.0 the Image would cache data which was not picklable
# once it had been drawn.
from matplotlib.backends.backend_agg import new_figure_manager
manager = new_figure_manager(1000)
fig = manager.canvas.figure
ax = fig.add_subplot(1, 1, 1)
ax.imshow(np.arange(12).reshape(3, 4))
manager.canvas.draw()
pickle.dump(fig, BytesIO())
def test_image():
# Prior to v1.4.0 the Image would cache data which was not picklable
# once it had been drawn.
from matplotlib.backends.backend_agg import new_figure_manager
manager = new_figure_manager(1000)
fig = manager.canvas.figure
ax = fig.add_subplot(1, 1, 1)
ax.imshow(np.arange(12).reshape(3, 4))
manager.canvas.draw()
pickle.dump(fig, BytesIO())
def test_grid():
from matplotlib.backends.backend_agg import new_figure_manager
manager = new_figure_manager(1000)
fig = manager.canvas.figure
ax = fig.add_subplot(1, 1, 1)
ax.grid()
# Drawing the grid triggers instance methods to be attached
# to the Line2D object (_lineFunc).
manager.canvas.draw()
pickle.dump(ax, BytesIO())
def test_grid():
from matplotlib.backends.backend_agg import new_figure_manager
manager = new_figure_manager(1000)
fig = manager.canvas.figure
ax = fig.add_subplot(1, 1, 1)
ax.grid()
# Drawing the grid triggers instance methods to be attached
# to the Line2D object (_lineFunc).
manager.canvas.draw()
pickle.dump(ax, BytesIO())
import numpy as np
from matplotlib.figure import Figure
from matplotlib.backends.backend_agg import new_figure_manager
def f(t):
return np.exp(-t) * np.cos(2 * np.pi * t)
def graph(fig):
t1 = np.arange(0.0, 5.0, 0.1)
t2 = np.arange(0.0, 5.0, 0.02)
ax = fig.add_subplot(1, 1, 1)
ax.plot(t1, f(t1), 'bo', t2, f(t2), 'k')
fig = Figure()
graph(fig)
manager = new_figure_manager(1, dpi=72)
manager.canvas.figure = fig
fig.set_canvas(manager.canvas)
fig.savefig("dist/no-pyplot.png")
def get_figure_manager(self, fignum):
return new_figure_manager(fignum)