wow, nice!
you switched the pics around, however (the skewed bar is in the qestion,
the normal one in the answer)
2014-03-21 0:30 GMT+01:00 Christian Feuersaenger <
cfeuersaen...@googlemail.com>:
> Hi Philipp,
>
> Hi Philipp,
>
> this is possible by rescaling point meta and by scaling it back in the
> colorbar.
>
> Since this is tedious to add to a mail, I posted your question along
> with my answer on
>
>
> http://tex.stackexchange.com/questions/166776/pgfplots-with-nonlinearly-scaled-color-maps/166777#166777
>
> I hope this is what you had in mind. Please post a new question on
> tex.stackexchange with an updated minimal example if that turned out to
> be a correct answer to a misunderstood question.
>
> Kind regards
>
> Christian
>
> Am 20.03.2014 11:59, schrieb Philipp A.:
> >
> > 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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