What is the usage of the plt.savefig function in Python…

1 year ago
Olivia Parker
2 minutes

The plt.savefig function is used to save the current figure to a specified file. It has the following syntax:

plt.savefig(filename, dpi=None, bbox_inches='tight', pad_inches=0.1, quality=95)

Explanation of parameters:

  1. File name: The name of the file to be saved (can be an absolute path or a relative path).
  2. DPI is an optional parameter that specifies the number of dots (pixels) per inch, with a default value of None, which means the default resolution is used.
  3. bbox_inches: an optional parameter that specifies the section to be saved. The default setting is ‘tight’, which saves the entire figure. It can also be set to ‘tight’ to trim any excess white space, or specified as a value such as (0,0,1,1) to specify the boundary box of the section to be trimmed.
  4. pad_inches: Optional parameter that specifies the amount of padding around the cropped region, with a default value of 0.1 inches.
  5. Quality only applies to JPEG file format, an optional parameter that specifies the image quality on a scale of 0 to 100, with a default value of 95.

原句： 他们不能克服这个问题。
释：They were unable to overcome this issue.

import matplotlib.pyplot as plt

plt.plot([1, 2, 3, 4, 5], [2, 4, 6, 8, 10])
plt.savefig('plot.png')

This code will save the current plot as a PNG file named plot.png.

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