I have a scenario where I have to apply an expression to a raster that is more complicated than can be captured by the RasterSingularCellValueCalculator, but the RasterExpressionEvaluator is complicated because a) there are a lot of bands and b) I don't know in advance the number of bands.
My current workaround is to use a RasterBandSeparator, RasterExpressionEvaluator (using A[0]), RasterBandCombiner sequence.
Bonus points if the expression can reference a list attribute with the list index corresponding to the band number.
Side note, @Value(A:_list{0}.x) works fine in the RasterExpressionEvaluator, but @Value(A:_list{@Value(A:_index}.x) fails to parse.
Archived
RasterExpressionEvaluator single equation for all bands
+40- Contributor
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+40- Contributor
Different scenario, similar issue.
It would be nice if I could enter a single equation referencing A[n] which would be applied to all bands.
In this case I need to apply a dynamic stretch on 8 bands and the equation looks something like this
if(A[0]==0,0,if(A[0]<@Value(A:_!TrimMin),@Value(A:_!Lower),@Value(A:_!Lower)+(@Value(A:_!BitDepth)-@Value(A:_!Lower))/(@Value(A:_!TrimMax)-@Value(A:_!TrimMin))*(A[0]-@Value(A:_!TrimMin))))
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