http://livecode.world/assets/graph/hierarchical.svg HEIGHT 400 The raw svg works.
The same file can be loaded this way:
http://rough.visualjam.org/assets/gv.html HEIGHT 600 Here we see a number of external files loaded using https and http. Digging into this file shows how setting width sometimes works, and other times is over-ridden by the svg - full screen
But not like this: