Matplotlib.artist.artist.set_snap()
matplotlib库的artist模块中的set_snap()方法用于设置抓拍行为。
语法:
Artist.set_snap(self, snap)
参数:该方法接受以下参数。
- snap:包含布尔值或None。
Returns:该方法不返回任何值。
下面的例子演示了matplotlib中matplotlib.artist.artist.set_snap()函数:
示例1
# Implementation of matplotlib function
from matplotlib.artist import Artist
import matplotlib.pyplot as plt
from mpl_toolkits.axisartist.axislines import Subplot
fig = plt.figure()
ax = Subplot(fig, 111)
fig.add_subplot(ax)
ax.axis["left"].set_visible(False)
ax.axis["top"].set_visible(False)
Artist.set_snap(ax, True)
fig.suptitle('matplotlib.artist.Artist.set_snap()\
function Example', fontweight ="bold")
plt.show()
输出:
示例2
# Implementation of matplotlib function
from matplotlib.artist import Artist
import numpy as np
import matplotlib.cm as cm
import matplotlib.pyplot as plt
import matplotlib.cbook as cbook
from matplotlib.path import Path
from matplotlib.patches import PathPatch
delta = 0.025
x = y = np.arange(-3.0, 3.0, delta)
X, Y = np.meshgrid(x, y)
Z1 = np.exp(-X**2 - Y**2)
Z2 = np.exp(-(X - 1)**2 - (Y - 1)**2)
Z = (Z1 - Z2) * 2
path = Path([[0, 1], [1, 0], [0, -1],
[-1, 0], [0, 1]])
patch = PathPatch(path, facecolor ='none')
fig, ax = plt.subplots()
ax.add_patch(patch)
im = ax.imshow(Z, interpolation ='bilinear',
cmap = cm.gray,
origin ='lower',
extent =[-3, 3, -3, 3],
clip_path = patch, clip_on = True)
im.set_clip_path(patch)
Artist.set_snap(ax, None)
fig.suptitle('matplotlib.artist.Artist.set_snap()\
function Example', fontweight ="bold")
plt.show()
输出: