Sum raster layers

[Ahmed_Wagih_Abdel-LatifAzab]

Dear All,

How can I sum a number of Grids loaded in the table of contents (I don't know the number of layers) in ArcObjects .NET?

Regards,

[KirkKuykendall]

did you try the RasterMapAlgebraOp ?
http://help.arcgis.com/en/sdk/10.0/arcobjects_net/conceptualhelp/index.html#//000100000165000000

[Ahmed_Wagih_Abdel-LatifAzab]

Yes, but the problem is that I want to sum all the layers in the table of contents, and I don't know before hand how many they are!


Regards,

[Ahmed_Wagih_Abdel-LatifAzab]

I was thinking of using IGPSAWeightedSum but I can't find any reference to its usage!

[KirkKuykendall]

The code at the link I posted could be modified to sum all rasters in the TOC.

[Ahmed_Wagih_Abdel-LatifAzab]

Thanks Kirk, but how would you represent an array of rasterlayers (rasterlayer(i)) in the script? The following equation in the code seems to be rigid to me!

rasterModel.Script = "[out] = [in01] + [in02]"