topic Re: How to use Raster Calculator In VB .net Arcobject?? in ArcObjects SDK Questions

How to use Raster Calculator In VB .net Arcobject??

GunWheeLee — Mon, 22 Sep 2014 07:06:02 GMT

Hello..

I want to use raster calculator in ArcObject.

This is my code..

Dim expression As String = "'" & bef_tif(0).FullName & "' + '" & aft_tif(0).FullName & "'"
Dim outputpath As String = Application.StartupPath & "\ChangeDetection\abc"

        Dim geoprocessor As GeoProcessor = New GeoProcessor()
        Dim ToolRasterCalc As SpatialAnalystTools.RasterCalculator = New SpatialAnalystTools.RasterCalculator(expression, outputpath)
        geoprocessor.OverwriteOutput = True
        geoprocessor.AddOutputsToMap = True

        Dim pParamarray As IVariantArray = New VarArrayClass()
        pParamarray.Add(expression)
        pParamarray.Add(outputpath)
        Dim result As IGeoProcessorResult = geoprocessor.Execute("raster_calculator", pParamarray, Nothing)

Error messege is HRESULT E_FAIL, Error code is -2147467259..

Plz help me ....

Re: How to use Raster Calculator In VB .net Arcobject??

XanderBakker — Wed, 24 Sep 2014 22:52:47 GMT

maybe this thread is of any help:

execute raster calculator geoprocessing tool from vb.net

It contains some links to the Help pages too.

Kind regards, Xander

Re: How to use Raster Calculator In VB .net Arcobject??

GunWheeLee — Thu, 25 Sep 2014 01:11:41 GMT

Thank you..

I saw that example. but that have some problem..

"Geoprocessor.Excute" need three parameters Name(string), ipvalue(VariantArray), pTrackCancel.. in VB.net 2010

but example have two parameters.