[jpeloquin]

Changing the plot backend should fix this.

  import matplotlib
  matplotlib.use('Agg')
  import matplotlib.pyplot as plt

https://stackoverflow.com/questions/2801882/generating-a-png...

[stilley2]

I believe Agg is only for bitmap output. While there are probably backends that work with a headless system, I find the OO option much more flexible.

[p10_user]

Agg works for all outputs. I use it in combination with OO over ssh all the time.