Python 中的 matplotlib.artist.artist.get_clip_path()
原文:https://www.geesforgeks.org/matplotlib-artist-artist-get_clip_path-in-python/
Matplotlib 是 Python 中的一个库,是 NumPy 库的数值-数学扩展。艺术家类包含抽象基类,用于渲染到图形画布中的对象。图形中所有可见的元素都是艺术家的子类。
matplotlib.artist.artist.get_clip_path()方法
matplotlib 库的 artist 模块中的 get_clip_path()方法用于获取剪辑路径。
语法: Artist.get_clip_path(self)
参数:该方法不接受任何参数。
返回:此方法返回剪辑路径。
以下示例说明了 matplotlib 中的 matplotlib.artist.artist.get_clip_path()函数:
示例 1: 输入图像:
# Implementation of matplotlib function
from matplotlib.artist import Artist
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((10, 10),
560,
500,
transform = ax.transData)
if Artist.get_clip_path(im) is None:
Artist.set_clip_path(im, patch)
fig.suptitle('matplotlib.artist.Artist.get_clip_path() \
function Example', fontweight ="bold")
plt.show()
输出:
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
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)
ax.text(-2.8, 2, str(Artist.get_clip_path(im)))
fig.suptitle('matplotlib.artist.Artist.get_clip_path() \
function Example', fontweight ="bold")
plt.show()
输出: