https://bugs.documentfoundation.org/show_bug.cgi?id=80303
--- Comment #15 from Wolfgang Jäger <[email protected]> ---
I still do not clearly understand the different "use cases" Markus Mohrhard
mentioned. Let me try:
As far as I can see the "property mapping" (That is assigning color values to
specific elements of a chart via "Range for ... Color" - or something else?)
is only available on the level of data points.
The coloring of data series is not supported by the feature.
On the other hand the legend of the chart will address the series for some
types and the data points ONLY(?) for pie type and its subtypes and for stacked
bars/columns. And ONLY for PIE charts the legend will address the data points
instead of the series. Ok. There must be different methods for preparing and
inserting the legends. Obviously legends addressing the data points should also
mirror the mapped properties. Thus pie charts should do this and all the other
charts should not. In addition the legend showing a color per series should be
omitted where the actual coloring is done by property mapping. The series color
is useless at least. I think it's misleading.
During my tests there was a reproducible case where a line chart (NOT
'Scatter'!) created by changing the type from pie to line remembered the mapped
'Fill' colors despite the fact that it had only tiny areas to fill and there
was no editor for the range of color values.
What about donut charts? More than one series can be colored here differently
by property mapping, but the legend is based on only one of them.
"Seeing the bigger picture" might require to specify the behavior of a new
feature and to check for probable inconsistencies. If the problems cannot be
mastered the feature might better not be implemented.
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