[Geoserver-devel] [JIRA] (GEOS-10159) Incorrect documentation for RasterSymbolizer when ColorMap type is interval

GeoServer GeoServer Developer
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Ciprian Tomoiaga created an issue

GeoServer / ImprovementGEOS-10159

Incorrect documentation for RasterSymbolizer when ColorMap type is interval

Issue Type:

ImprovementImprovement

Assignee:

Unassigned

Created:

23/Jul/21 10:44 AM

Priority:

MediumMedium

Reporter:

Ciprian Tomoiaga

The documentation for ColorMap type interval states:

type=“intervals” value means that each interval defined by two entries is rendered using the color of the first (lowest-value) entry. No color interpolation is applied across the intervals.

(my underline)

However, this is not true. Instead, the second (highest-value) entry is used. This is confirmed by the code:

https://github.com/geoserver/geoserver/blob/f2e946f47cd28c5c0137815006d131725790566c/src/wms/src/main/java/org/geoserver/wms/featureinfo/ColorMapLabelMatcher.java#L116-L122

I think the docs should also specify the comment in the code:

Raster Symbolizer will not produce results for pixel values > then the last ColorMapEntry quantity, in case of ColorMap of type interval

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