Assigns a numeric order to segments of a raster representing branches of a linear network.
[Visual Basic .NET] Public Function StreamOrder ( _ ByVal streamRaster As IGeoDataset, _ ByVal directionRaster As IGeoDataset, _ ByVal orderType As esriGeoAnalysisStreamOrderEnum _ ) As IGeoDataset
[C#] public IGeoDataset StreamOrder ( IGeoDataset streamRaster, IGeoDataset directionRaster, esriGeoAnalysisStreamOrderEnum orderType );
[C++]
HRESULT StreamOrder(
IGeoDataset* streamRaster,
IGeoDataset* directionRaster,
esriGeoAnalysisStreamOrderEnum orderType,
IGeoDataset** StreamOrder
);
[C++]Parameters
streamRaster [in]streamRaster is a parameter of type IGeoDataset
directionRaster [in]directionRaster is a parameter of type IGeoDataset
orderType [in]orderType is a parameter of type esriGeoAnalysisStreamOrderEnum
StreamOrder [out, retval]StreamOrder is a parameter of type IGeoDataset
Product Availability
Remarks
|
streamRaster |
an input Raster, RasterDataset, RasterBand, or RasterDescriptor representing a raster linear network |
|
directionRaster |
an input Raster, RasterDataset, RasterBand, or RasterDescriptor showing the direction of flow out of each cell This can be created using the IHydrologyOp::FlowDirection method. |
|
orderType |
an esriGeoAnalysisStreamOrderEnum indicating the method for assigning order esriGeoAnalysisStreamOrderStrahler the method will be the stream ordering proposed by Strahler in 1952 Stream order only increases when streams of the same order intersect. Therefore, the intersection of a first-order and second-order link will remain a second-order link rather than create a third-order link. This method is commonly used. esriGeoAnalysisStreamOrderShreve the method will be stream ordering by magnitude proposed by Shreve in 1967 All links with no tributaries are assigned a magnitude (order) of 1. Magnitudes are additive downslope. When two links intersect, their magnitudes are added and assigned to the downslope link. |
- The method returns a reference to a Raster object.
- Read the Working with ArcGIS Spatial Analyst objects technical document for general information on implementing Spatial Analyst operations.