support rangemode="symmetric"

[ssfrr]

I sometimes want to make a graph where zero is in the middle, but I still want to use autorange rather then setting the range manually. Could there be a rangemode value of "symmetric" that would set the range to be [-x, x] where x = max(abs(max(data), min(data)))?

[etpinard]

Yeah, that would be nice.

Thanks for writing in!

[gvwilson]

Hi - this issue has been sitting for a while, so as part of our effort to tidy up our public repositories I'm going to close it. If it's still a concern, we'd be grateful if you could open a new issue (with a short reproducible example if appropriate) so that we can add it to our stack. Cheers - @gvwilson