Hi,
I mean: does it propose logarithmic scaling features,
So far I have completely ducked the log scaling - it looked completely different from linear - and a bit scary.
So to plot things on a log scale, you will have to take logs first, and then plot them.
It would only be a half solution since I expect from that kind of scale that the x axis be also scaled logarithmically, with exponential graduations in order to finally render regular intervals (e.g. for a sound bandwith: 20, 200, 2000, 20000 Hz).
and is it sufficiently generic to easily change the output type (e.g. an OpenGL framebuffer)?
Well the output is plain readable text - use your browser View, Page Source to see it.
You can send this text to a ostream or a file.
I'm afraid how you get it rendered is your problem :-(
But it might be possible - the SVG is entirely Standard.
Yes indeed... hadn't even realized that SVG is not a way to render but a way to express information. BTW a quick googling shew me that there apparently exist some SVG to OpenGL libs. Regards Bruno