How to save figures to pdf as raster images in matplotlib

问题

I have some complex graphs made using matplotlib. Saving them to a pdf using the savefig command uses a vector format, and the pdf takes ages to open. Is there any way to save the figure to pdf as a raster image to get around this problem?

回答1:

You can force individual figure elements to be rasterized like this:

text(1,1,'foobar',rasterized=True)

回答2:

Not that I know, but you can use the 'convert' program (ImageMagick') to convert a jpg to a pdf: `convert file.jpg file.pdf'.

来源：https://stackoverflow.com/questions/5609969/how-to-save-figures-to-pdf-as-raster-images-in-matplotlib