| The ColorMap element defines either the colors of a palette-type raster
source or the mapping of fixed-numeric pixel values to colors.
<xs:element name="ColorMap">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element ref="sld:ColorMapEntry"/>
</xs:choice>
</xs:complexType>
</xs:element>
For example, a DEM raster giving elevations in meters above sea level can be
translated to a colored image with a ColorMap. The quantity attributes of
a color-map are used for translating between numeric matrixes and color
rasters and the ColorMap entries should be in order of increasing numeric
quantity so that intermediate numeric values can be matched to a color (or
be interpolated between two colors). Labels may be used for legends or
may be used in the future to match character values. Not all systems can
support opacity in colormaps. The default opacity is 1.0 (fully opaque).
Defaults for quantity and label are system-dependent.
|