In the MapnikRasterizer settings, in the Raster Properties section, it is necessary to specify the number of columns and rows of the output raster.
When I enter this information manually, there is no problem.
When I want these parameters to be filled in dynamically, i.e. using the number of columns and rows of the input raster (using a RasterPropertyExtractor beforehand to access the attributes), I get this error message:
"MapnikRasterizer_2 (MapnikFactory): No values were specified for either NUM_ROWS and NUM_COLUMNS, or SPACING. One or the other must be specified
MapnikRasterizer_2 (MapnikFactory): A fatal error has occurred. Check the logfile above for details
AttributeManager_OUTPUT_-1_84_Player (RecorderFactory): A fatal error has occurred. Check the logfile above for details
A fatal error has occurred. Check the logfile above for details".
The number of columns and rows in the input raster are 32 bit unsigned integer. When I converted it to 64 bit integer via the Attribute Manager and the arithmetic calculator, it doesn't change anything, I still get the same error message.
However, if I create user parameters by manually entering the number of columns and rows in them. And then I assign these user parameters to the raster via AttributeManager (the parameters are in 64 bit integer). And finally, I assign these new attributes in a "dynamic" way as parameter values for the number of columns and rows of the raster in the output that WORKS.
In the end, I still find myself manually modifying the number of columns and rows of the output raster each time the input raster is modified.
Do you have an explanation/solution?
Thank you.
