保存在python中使用peek（）显示的图像

Question

  import matplotlib.pyplot as plt
  import sunpy.spectra
  import sunpy.data.sample
  from sunpy.spectra.sources.callisto import CallistoSpectrogram
  image = CallistoSpectrogram.read(sunpy.data.sample.CALLISTO_IMAGE)
  image.peek()

那么如何用命令保存这个图像呢？你知道吗

Answer 1

我没有一个SunPy环境来测试这个，但是你能给下面的一个镜头吗？你知道吗

import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import sunpy.spectra
import sunpy.data.sample
from sunpy.spectra.sources.callisto import CallistoSpectrogram
image = CallistoSpectrogram.read(sunpy.data.sample.CALLISTO_IMAGE)
image.plot()
plt.savefig('myfig')

基于Generate images without having a window appear：

The easiest way to do this is use a non-interactive backend (see What is a backend?) such as Agg (for PNGs), PDF, SVG or PS. In your figure-generating script, just call the matplotlib.use() directive before importing pylab or pyplot:

import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
plt.plot([1,2,3])
plt.savefig('myfig')