How to remove the unwanted values created around the raster data to show the background in C++ ArcGIS Runtime API

[hoangtruonggis]

I'm using Qt 5 C++ / Desktop_Qt_5_15_2_MSVC2019_64bit and ArcGIS SDK 100.13 to build my app.

When I add a raster to the map, I have a trouble creating a white (or black) background on a tiff image.

I want the white part to be transparent so the background can be seen.

Thank for help!

[ThomasHoman]

Hello,

While I don't have specific SDK experience perhaps https://pro.arcgis.com/en/pro-app/latest/tool-reference/data-management/mosaic.htm might help. Specifically the comment of "For file-based rasters, Ignore Background Value must be set to the same value as NoData for the background value to be ignored."

Regards,

Tom

[hoangtruonggis]

Thank for your suggestion. But the main reason is I programmatically create the application independently with ArcGIS Pro. I haven't found any APIs that support it yet.

[MichaelBranscomb]

The Raster Function capability may solve the problem - for more info see Solved: Re: RasterLayer Alpha Channel? - Esri Community