can you drop the second commit from this PR (the first commit is not controversial and I will merge strait away).

Want to do a bit of digging as to the source of that limit. I suspect that it is to prevent making the window arbitrarily small which may cause AGG to have conniptions as it tries to render your entire figure in a 3px wide box.

Done. Perhaps if the limit needs left in there it should be set to a hard minimum value such as 10px rather than a sizable percentage of the original specified height and width. I did some quick (albeit very incomplete) testing and there didn't seem to be a functional problem with rendering a histogram plot down to a few 10s of pixels.

Thanks!

I merged just the first commit (not the second and the reversion of it) on my local machcine as 4ed6cf3.

Can you open a new PR with re-size limit change? It is best if you put in a PR from a feature branch (that is a branch called anything but master/v1.4.x).