Indicate range of values

[bast]

To make it easier to select an isovalue. Also document how the default isovalue is computed.

[stigrj]

It would be nice to have a scroll bar or something for the isovalue. At least something click-based.

[bast]

I agree. The meshing can still be a bit sluggish for a slider rule: for 80x80x80 points the meshing takes 1-2 seconds. But this is without any optimization and screening (#3). Once this is sped up a bit, the meshing could be done on the fly.