off-screen rendering

[Jon Christopher]

For its efficiency, I'd like to use pyqtgraph rather than matplotlib, but in a headless environment.  

In matplotlib, I can create and save plots to a file without having a window, i.e. use off-screen rendering, and display that to a file.

Can I do this with pyqtgraph?  For the simplest possible plot example:

import numpy as np

import pyqtgraph as pg

data = np.random.normal(size=1000)

pg.plot(data, title="Simplest possible plotting example")

would it be possible to do something like:

data = np.random.normal(size=1000)

pg.render(data, title="Simplest possible plotting example","file.jpg")

Or alternately:

lay = pg.GraphicsLayout()

lay.addPlot(data)

lay.setSize(1000,1000)

lay.save("myfile.jpg")

If so, how?

Thanks!

-Jon