ArcGIS Enterprise SDK
IRasterBandCollection Interface
ArcGIS Enterprise SDK Developer Help > ArcGIS Enterprise SDK API Reference > ArcGIS Enterprise SDK .NET Namespaces > ESRI.Server.DataSourcesRaster > Interfaces > IR > IRasterBandCollection Interface
ArcGIS Developer Help (ESRI.ArcGIS.DataSourcesRaster)

IRasterBandCollection Interface

Provides access to members that control a collection of RasterBands.

When To Use

The IRasterBandCollection interface allows you to access the raster bands that compose the raster.

Members

Name Description
Method Add Adds a RasterBand to the band collection.
Method AppendBand Appends a RasterBand to the band collection.
Method AppendBands Appends a collection of RasterBands to the band collection.
Read-only property BandByName A RasterBand given its name.
Read-only property BandIndex The index of a RasterBand given its name.
Read-only property Bands All the bands in the collection as an interface to the RasterBands enumerator object.
Method Clear Removes all the elements in the collection.
Read-only property Count The number of bands in the collection.
Method Item Returns a RasterBand given its index.
Method Remove Removes an element from the collection.
Method SaveAs Creates a new persistent RasterDataset with the bands in the collection.

Classes that implement IRasterBandCollection

Classes Description
FunctionRasterDataset A class for a function raster dataset.
Raster An in-memory representation of a dynamic raster that can perform resampling and reprojection.
RasterDataset A representation of a raster dataset on disk.

Remarks

IRasterBandCollection interface is used to manage and access a collection of raster bands of a RasterDataset or a Raster

The Add, Remove, Clear, AppendBand and AppenBands methods only applicable to IRasterBandCollection on a Raster, not on a RasterDataset.

When a band is added to or removed from a Raster object, the Raster recomputes a default cell size, extent, and spatial reference based on the bands in the Raster. If the user has not explicitly set these properties, the default settings will be applied to the raster object.

The spatial reference is determined first. If the user has not specified a spatial reference system to be applied to the raster, it is calculated from the first band in the raster that has a spatial reference other than unknown. If all bands have an unknown spatial reference, the spatial reference system of the raster will be unknown.

Next the cell size is calculated, if the cell size and number of rows and columns have not been specified by the user. The cell size is the maximum cell size of any input bands projected into the current spatial reference system. If no spatial reference system is known, the largest cell size of any band in the Raster is selected.

Finally, if the extent has not been specified by the user, it is calculated. The extent is the smallest bounding box with an integer number of rows and columns that can be placed around all bands of the input raster while aligning with the bottom-left corner of the Raster.