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matplotlib.pyplot.polar()用 Python

表示

哎哎哎:# t0]https://www.geeksforgeeks.org/matplot lib-pyplot-polar-in-python/

Matplotlib 是 Python 中的一个库,是 NumPy 库的数值-数学扩展。 Pyplot 是一个基于状态的接口到 Matplotlib 模块,它提供了一个类似于 MATLAB 的接口。

matplotlib.pyplot.polar()函数:

matplotlib 库 pyplot 模块中的极坐标()函数用于制作极坐标图。

语法:matplotlib.pyplot.polar( args、*kwargs)

参数:此方法不接受任何参数。

返回:此方法不返回任何值。

下面的例子说明了 matplotlib.pyplot.polar()函数在 matplotlib.pyplot 中的作用:

示例#1:

# Implementation of matplotlib function
import matplotlib.pyplot as plt
import matplotlib.transforms as mtransforms
import numpy as np

from matplotlib.transforms import offset_copy

xs = np.arange(-2, 2)
ys = np.cos(xs**2)
plt.polar(xs, ys) 

plt.title('matplotlib.pyplot.polar() function Example',
                                    fontweight ="bold")
plt.show()

输出:

例 2:

# Implementation of matplotlib function
import matplotlib.pyplot as plt
import matplotlib.transforms as mtransforms
import numpy as np

from matplotlib.transforms import offset_copy

xs = np.arange(8)
ys = np.cos(xs**2)

fig = plt.figure(figsize =(5, 10))
ax = plt.subplot(1, 1, 1)

trans_offset = mtransforms.offset_copy(ax.transData, fig = fig,
                                       y = 6, units ='dots')

for x, y in zip(xs, ys):
    plt.polar(x, y, 'go')
    plt.text(x, y, '% d, % d' % (int(x), int(y)),
                       transform = trans_offset,
                  horizontalalignment ='center',
                    verticalalignment ='bottom')

plt.title('matplotlib.pyplot.polar() function Example', 
                                    fontweight ="bold")
plt.show()

输出:



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