log scaling is not always working

[jourdain]

[jourdain]

Also what should be done with negative / 0 values?

[jourdain]

Scalar bar ticks?

[jourdain]

I changed something in v1.3.4 but I'm not sure that truly fix this.

ticks and negative/0 handling is not taking care.

[jourdain]

0 => NaN
<0 => sign * log(abs(v))

[huiwanpnnl]

Here is an example (i.e., a plot created using a different tool) in which we are showing both positive and negative values. The scale is not exactly log, but in that spirit.

If using a scale of log10, what we would like to have is essentially a set of contour levels like, e.g., -10^3, -10^2, -10^1, -10^0, 10^0, 10^1, 10^2, 10^3