Python中的 Matplotlib.axes.Axes.set_clip_path()
Matplotlib是Python中的一个库,它是 NumPy 库的数值数学扩展。 Axes 类包含大部分图形元素:Axis、Tick、Line2D、Text、Polygon 等,并设置坐标系。 Axes 的实例通过回调属性支持回调。
matplotlib.axes.Axes.set_clip_path()函数
matplotlib 库的 axes 模块中的Axes.set_clip_path()函数用于设置艺术家的剪辑路径。
Syntax: Axes.set_clip_path(self, path, transform=None)
Parameters: This method accepts only two parameters.
- path: This parameter is the clip path.
- transform: This parameter in which Path is converted to a TransformedPath using transform.
Returns: This method does not return any value.
下面的示例说明了 matplotlib.axes 中的 matplotlib.axes.Axes.set_clip_path()函数:
示例 1:
输入图像:
# Implementation of matplotlib function
import matplotlib.pyplot as plt
import matplotlib.patches as patches
import matplotlib.cbook as cbook
with cbook.get_sample_data('loggf.PNG') as image_file:
image = plt.imread(image_file)
fig, ax = plt.subplots()
im = ax.imshow(image)
patch = patches.Rectangle((0, 0),
260,
200,
transform = ax.transData)
im.set_clip_path(patch)
fig.suptitle('matplotlib.axes.Axes.set_clip_path() \
function Example\n\n', fontweight ="bold")
plt.show()
输出:
示例 2:
# Implementation of matplotlib function
import numpy as np
import matplotlib.cm as cm
import matplotlib.pyplot as plt
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)
fig.suptitle('matplotlib.axes.Axes.set_clip_path() \
function Example\n\n', fontweight ="bold")
plt.show()
输出: