def __init__(self, ax, labels, active=0, activecolor='blue'):
"""
Add radio buttons to :class:`matplotlib.axes.Axes` instance *ax*
*labels*
A len(buttons) list of labels as strings
*active*
The index into labels for the button that is active
*activecolor*
The color of the button when clicked
"""
self.activecolor = activecolor
ax.set_xticks([])
ax.set_yticks([])
ax.set_navigate(False)
dy = 1. / (len(labels) + 1)
ys = np.linspace(1 - dy, dy, len(labels))
cnt = 0
axcolor = ax.get_axis_bgcolor()
self.labels = []
self.circles = []
for y, label in zip(ys, labels):
t = ax.text(0.25,
y,
label,
transform=ax.transAxes,
horizontalalignment='left',
verticalalignment='center')
if cnt == active:
facecolor = activecolor
else:
facecolor = axcolor
p = Circle(xy=(0.15, y),
radius=0.05,
facecolor=facecolor,
transform=ax.transAxes)
self.labels.append(t)
self.circles.append(p)
ax.add_patch(p)
cnt += 1
ax.figure.canvas.mpl_connect('button_press_event', self._clicked)
self.ax = ax
self.cnt = 0
self.observers = {}
def test_lines_dists():
ax = pylab.gca()
xs, ys = (0, 30), (20, 150)
pylab.plot(xs, ys)
points = zip(xs, ys)
p0, p1 = points
xs, ys = (0, 0, 20, 30), (100, 150, 30, 200)
pylab.scatter(xs, ys)
#
dist = line2d_seg_dist(p0, p1, (xs[0], ys[0]))
dist = line2d_seg_dist(p0, p1, npy.array((xs, ys)))
for x, y, d in zip(xs, ys, dist):
c = Circle((x, y), d, fill=0)
ax.add_patch(c)
#
pylab.xlim(-200, 200)
pylab.ylim(-200, 200)
pylab.show()