坐标之间的Python转换 [英] Python conversion between coordinates

问题描述

是否有不同坐标系之间的转换函数?

Are there functions for conversion between different coordinate systems?

例如，Matlab 有 [rho,phi] = car2pol(x,y) 用于从笛卡尔坐标到极坐标的转换.似乎它应该在 numpy 或 scipy 中.

For example, Matlab has [rho,phi] = cart2pol(x,y) for conversion from cartesian to polar coordinates. Seems like it should be in numpy or scipy.

推荐答案

使用 numpy，您可以定义以下内容:

Using numpy, you can define the following:

import numpy as np

def cart2pol(x, y):
    rho = np.sqrt(x**2 + y**2)
    phi = np.arctan2(y, x)
    return(rho, phi)

def pol2cart(rho, phi):
    x = rho * np.cos(phi)
    y = rho * np.sin(phi)
    return(x, y)

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