如何在 Windows 上使用 pip for Spyder (Python 3.5) 安装颜色图

问题描述

我想使用cmap_builder，所以我试过了from colormap import cmap_builder.当我尝试时，Spyder 向我抛出了一个错误ImportError: 没有名为colormap"的模块

所以我尝试安装，pip install colormap 如

可以像这样创建一个离散的颜色图:

cmap = mcolors.ListedColormap(["深红色","金色","钢蓝色"])

I want to use cmap_builder, So I triedfrom colormap import cmap_builder.When I tried, Spyder throwed me an errorImportError: No module named 'colormap'

So I tried installing, pip install colormap as described in http://colormap.readthedocs.io/en/latest/This didn't work and displayed a messageNo matching distribution found

So is there a different way to install colormap for python 3.5 to use on Spyder ?

解决方案

In principle matplotlib already has all the tools available to create custom colormaps. The two main options are to create a segmented colormap, LinearSegmentedColormap or a discrete colormap ListedColormap.

Find here an example of a continuous colormap between crimson, gold and blue:

import matplotlib.colors as mcolors
import matplotlib.pyplot as plt
import numpy as np

cmap = mcolors.LinearSegmentedColormap.from_list("n", ["crimson", "gold","steelblue"])

x = np.linspace(-1,2.7)
X,Y = np.meshgrid(x,x)
Z = np.exp(-X**2-Y**2)

im =plt.imshow(Z, cmap=cmap)
plt.colorbar()

plt.show()

A discrete colormap could be created like this:

cmap = mcolors.ListedColormap(["crimson", "gold","steelblue"])

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