SVG image sizing

of the svg header as 1. below. If I adjust the header

    > as in 2. with a viewBox setting I get an image that
    > will scall to the browser window, and is centered. Is
    > there a way to do this from with in Matplotlib?

Should be pretty easy. Take a look at
matplotlib/backends/backend_svg.py and submit a patch.

Thanks!
JDH