Hello!
I am not really sure if this is the right place to report it, or geotools
repository would be more appropriate.
I am using Ras:Jiffle operation on GeoServer layer in SLD style, but when
the processing area of Ras:Jiffle is larger than SRS bounds - crossing
datetime line for webmercator for example, the raster is visible only inside
the SRS bounds, even though other elements are correctly visible.
First image shows global pressure with cut raster on date line.
(webmercator) This example layer uses Jiffle.
https://www.dropbox.com/s/7yi3fg1zjb58fed/pressure.png?dl=0
Second image shows global temperature. This example layer does not use
Jiffle.
https://www.dropbox.com/s/b09t4v3bbjrrggg/temp.png?dl=0
Queried BBOX is extended webmercator BBOX in the X coordinate around 1.5
times and is the same for both examples: &bbox=-3.00360832789244E7%2C-
2.00496140146E7%2C3.00375042789244E7%2C2.005866104014594E7
Part of SLD style for pressure: Jiffle for example divides pressure by 100.
Contours are drawn outside of bbox even though Jiffle is used for them too,
while ColorMap is not.
<FeatureTypeStyle>
<Transformation>
<ogc:Function name="ras:Jiffle">
<ogc:Function name="parameter">
<ogc:Literal>coverage</ogc:Literal>
</ogc:Function>
<ogc:Function name="parameter">
<ogc:Literal>script</ogc:Literal>
<ogc:Literal>
pres = src[0];
dest = pres / 100.0;
</ogc:Literal>
</ogc:Function>
</ogc:Function>
</Transformation>
<Rule>
<RasterSymbolizer>
<Opacity>0.4</Opacity>
<ColorMap>
<ColorMapEntry color="#FFFFFF" quantity="950" opacity="1" />
<ColorMapEntry color="#9380F7" quantity="960" opacity="1" />
<ColorMapEntry color="#7986f8" quantity="970" opacity="1" />
<ColorMapEntry color="#6EB7F8" quantity="980" opacity="1" />
<ColorMapEntry color="#60CDF6" quantity="985" opacity="1" />
<ColorMapEntry color="#51F1F4" quantity="990" opacity="1" />
<ColorMapEntry color="#3BF49D" quantity="995" opacity="1" />
<ColorMapEntry color="#9AF32D" quantity="1000" opacity="1" />
<ColorMapEntry color="#DAF32B" quantity="1005" opacity="1" />
<ColorMapEntry color="#F3CA27" quantity="1010" opacity="1" />
<ColorMapEntry color="#F2641E" quantity="1015" opacity="1" />
<ColorMapEntry color="#DD151E" quantity="1020" opacity="1" />
<ColorMapEntry color="#85093E" quantity="1030" opacity="1" />
<ColorMapEntry color="#180112" quantity="1040" opacity="1" />
</ColorMap>
</RasterSymbolizer>
</Rule>
<FeatureTypeStyle>
</FeatureTypeStyle>
<Transformation>
<ogc:Function name="ras:Contour">
<ogc:Function name="parameter">
<ogc:Literal>data</ogc:Literal>
<ogc:Function name="ras:Jiffle">
<ogc:Function name="parameter">
<ogc:Literal>coverage</ogc:Literal>
</ogc:Function>
<ogc:Function name="parameter">
<ogc:Literal>script</ogc:Literal>
<ogc:Literal>
pres = src[0];
dest = pres / 100.0;
</ogc:Literal>
</ogc:Function>
</ogc:Function>
</ogc:Function>
<ogc:Function name="parameter">
<ogc:Literal>levels</ogc:Literal>
levels...
Is it just that I should specify something inside the Jiffle code block to
display the raster even outside SRS bounds or is this expected behaviour?
Thanks for maybe shedding some light into this mystery.
Best,
Lubomir Bucek
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