topic Re: Create ILayer from IRaster in ArcObjects SDK Questions

Create ILayer from IRaster

MeleKoneya — Wed, 15 Dec 2010 18:48:57 GMT

I am using IMapServerDataAccess to get an IRaster using the following:

IRaster raster = (IRaster)dataAccess.GetDataSource(mapServer.DefaultMapName, mapLayer);

How do I then add that IRaster as an ILayer to ArcMap?

I have tried casting IRaster to IRasterLayer with no luck. Do I need to cast the IRaster to another object first?

Thanks for any assistance. I am working in C#, but will gladly take other samples if available.

Mele

Re: Create ILayer from IRaster

RobertBerger — Wed, 15 Dec 2010 20:51:37 GMT

Hi Mele,

Have you tried creating a raster layer and then calling rasLayer.CreateFromRaster? This should create your raster layer from the IRaster object you have.
IRasterLayer
Look at the snippet how to Create a Raster Layer

Hope this helps.

Robert

Re: Create ILayer from IRaster

MeleKoneya — Wed, 15 Dec 2010 21:35:19 GMT

Thanks Robert. I will give this a shot. I couldn't find it so I appreciate your assistance with pointing me in the right direction.

Re: Create ILayer from IRaster

Venkata_RaoTammineni — Fri, 17 Dec 2010 09:22:40 GMT

I am using IMapServerDataAccess to get an IRaster using the following:

IRaster raster = (IRaster)dataAccess.GetDataSource(mapServer.DefaultMapName, mapLayer);

How do I then add that IRaster as an ILayer to ArcMap?

I have tried casting IRaster to IRasterLayer with no luck. Do I need to cast the IRaster to another object first?

Thanks for any assistance. I am working in C#, but will gladly take other samples if available.

Mele

public static void AddRasterLayer(ESRI.ArcGIS.Carto.IActiveView activeView,
    ESRI.ArcGIS.Geodatabase.IRasterDataset rasterDataset,
    ESRI.ArcGIS.Carto.IRasterRenderer rasterRenderer)
{
    //Create a raster layer from a raster dataset. You can also create a raster layer from a raster.
    ESRI.ArcGIS.Carto.IRasterLayer rasterLayer = new RasterLayerClass();
    rasterLayer.CreateFromDataset(rasterDataset);
    //Set the raster renderer. The default renderer will be used if passing a null value.
    if (rasterRenderer != null)
    {
        rasterLayer.Renderer = rasterRenderer;
    }
    //Add it to a map if the layer is valid.
    if (rasterLayer != null)
    {
        ESRI.ArcGIS.Carto.IMap map = activeView.FocusMap;
        map.AddLayer((ILayer)rasterLayer);
    }
}

Re: Create ILayer from IRaster

MeleKoneya — Fri, 17 Dec 2010 10:39:23 GMT

I used the IRasterLayer.CreatefromRaster method with success. Thanks to both of your replies as this pointed me in the right direction.

Mele