def __init__(self, **kwargs):
'''
'''
self.kwargs = kwargs
self.fig = pl.figure(figsize = (6,6))
self.fig.subplots_adjust(bottom = 0.25)
self.axtheta = pl.axes([0.3, 0.05, 0.44, 0.03])
self.theta = Slider(self.axtheta, r'$\theta$', -180., 180.,
valinit = 90.)
self.axphi = pl.axes([0.3, 0.1, 0.44, 0.03])
self.phi = Slider(self.axphi, r'$\Phi$', -90, 90., valinit = 0.)
self.axlam = pl.axes([0.3, 0.15, 0.44, 0.03])
self.lam = Slider(self.axlam, r'$\Lambda$', -90, 90., valinit = 0.)
self.theta.on_changed(self._update)
self.phi.on_changed(self._update)
self.lam.on_changed(self._update)
self._update(90.)
pl.show()
python类Slider()的实例源码
def _test():
'''
'''
# HACK: Python 2 does not seem to like the Slider widget...
import sys
if sys.version_info[0] < 3:
return
plot()
pl.show()
def plot():
'''
'''
fig, ax = pl.subplots(1)
ax.axis('off')
fig.subplots_adjust(bottom = 0.2)
z = np.zeros((100, 100)) * np.nan
img = pl.imshow(z, cmap = cmap, vmin = 0, vmax = 180.,
extent = (-1, 1, -1, 1))
x = np.linspace(-0.99,0.99,1000)
ax.plot(x, np.sqrt(0.99 ** 2 - x ** 2), 'k-', lw = 2)
ax.plot(x, -np.sqrt(0.99 ** 2 - x ** 2), 'k-', lw = 2)
ax.set_xlim(-1.1,1.1)
ax.set_ylim(-1.1,1.1)
axslider = pl.axes([0.3, 0.05, 0.44, 0.03])
slider = Slider(axslider, r'$\theta$', -180., 180., valinit = 45.)
def update(val):
theta = slider.val
for i, x in enumerate(np.linspace(-1,1,100)):
for j, y in enumerate(np.linspace(-1,1,100)):
if (x ** 2 + y ** 2 <= 1):
z[j,i] = ZenithAngle(x, y, 1, theta * np.pi / 180) \
* 180 / np.pi
img.set_data(z)
fig.canvas.draw_idle()
slider.on_changed(update)
update(45.)
def interactive(self):
"""Simple interactive quadtree plot with matplot
This is a relictic function
"""
from matplotlib.widgets import Slider
self._initImagePlot()
def change_epsilon(e):
self._quadtree.epsilon = e
def close_figure(*args):
self._quadtree.evChanged.unsubscribe(self._update)
self.ax.set_position([0.05, 0.15, 0.90, 0.8])
ax_eps = self.fig.add_axes([0.05, 0.1, 0.90, 0.03])
self.data = self._quadtree.leaf_matrix_means
self.title = 'Quadtree Means - Interactive'
self._addInfoText()
epsilon = Slider(ax_eps, 'Epsilon',
self._quadtree.epsilon - 1.*self._quadtree.epsilon,
self._quadtree.epsilon + 1.*self._quadtree.epsilon,
valinit=self._quadtree.epsilon, valfmt='%1.3f')
# Catch events
epsilon.on_changed(change_epsilon)
self._quadtree.evChanged.subscribe(self._update)
self.fig.canvas.mpl_connect('close_event', close_figure)
plt.show()
def __init__(self, viewer, images):
self.viewer = viewer
self.images = images
length = len(self.images)
fig = self.viewer._fig
slider_ax = fig.add_axes([0.1, 0.01, 0.8, 0.02])
self.slider = Slider(slider_ax, 'Frame', 0, length - 1, 0,
valfmt='%d/{}'.format(length - 1))
self.slider.on_changed(self.update)
self.update(0) # Trigger the initialization of viewer.
