hi,
i have a picture that uses a diverging color map.
but minimum and maximum don’t have the same absolute value (but -0.2 and
+0.5 instead)
i want to be able to do a centered color map, where “0” is the middle
color, all points >0 use the upper half of the map, and all <0 the lower
half.
the color bar should be skewed according to the real values (i.e. the lower
half of the map should take up 2/7 of the bar,a nd the upper half the
remaining 5/7)
maybe a point meta center=[auto,<scalar>] key, with auto meaning a
calculated value of (point meta max + point meta min) ÷ 2
best,
philipp
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