Home > Backend Development > Python Tutorial > How can I set the colorbar range in Matplotlib\'s pcolor() function to a specific range like 0 to 1?

How can I set the colorbar range in Matplotlib\'s pcolor() function to a specific range like 0 to 1?

Linda Hamilton
Release: 2024-11-04 08:35:02
Original
547 people have browsed it

How can I set the colorbar range in Matplotlib's pcolor() function to a specific range like 0 to 1?

Setting Colorbar Range

In the provided code snippet, the colormap is spread between the minimum and maximum values of the data. To force the colormap to range between 0 and 1, you can use the vmin and vmax parameters when calling plt.pcolor(). These parameters specify the minimum and maximum values for the colormap, respectively.

Here is an example of how to use vmin and vmax to set the colorbar range:

<code class="python">import matplotlib.pyplot as plt

cdict = {
  'red'  :  ( (0.0, 0.25, .25), (0.02, .59, .59), (1., 1., 1.)),
  'green':  ( (0.0, 0.0, 0.0), (0.02, .45, .45), (1., .97, .97)),
  'blue' :  ( (0.0, 1.0, 1.0), (0.02, .75, .75), (1., 0.45, 0.45))
}
 
cm = m.colors.LinearSegmentedColormap('my_colormap', cdict, 1024)
 
plt.clf()
plt.pcolor(X, Y, v, cmap=cm, vmin=0, vmax=1)
plt.loglog()
plt.xlabel('X Axis')
plt.ylabel('Y Axis')
 
plt.colorbar()
plt.show()</code>
Copy after login

With this modification, the colormap will be set to range between 0 and 1, which will result in a more consistent color mapping across different graphs with different data ranges.

The above is the detailed content of How can I set the colorbar range in Matplotlib\'s pcolor() function to a specific range like 0 to 1?. For more information, please follow other related articles on the PHP Chinese website!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template