[yt-users] phase plot png

[Yi Feng]

Hi,
I save the phase plot as png file, but the plot in the png file is small
and there is large blank region.
How to remove the blank region when I save?
Or how to save it as pdf file so that I can use pdfcrop?
Thanks!

-- 
Sincerely
Yi Feng
Department of Astronomy&Astrophysics,UC Santa Cruz
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