ETG_StreamRasterToFeatures

Stream Raster to Features

Converts a Stream raster to a polyline feature class. Optionally creates a point feature class with the Nodes of the stream network.

A Polyline feature class. Each polyline represents a section of the Stream network between two junctions or from a junction to an outlet or from stream head to junction.
Optional Point feature class. Each point represents a node of the Stream network - a junction or an outlet or a stream head.

An example of Stream Raster to Features output - Streams and Nodes.

The Stream feature class will have attributes for the unique Stream Link ID, Start Node and End Node corresponding with the Node ID from the Node Point feature class.
The Node feature class will have attributs for the Unique Node ID.
The Stream polylines will have a direction pointing downstream.
The input Stream raster and the input D8 Flow Direction raster must have the same cell size and extent. In fact they should originate from the same DEM raster.
See Hydrological functions for more information on the hydrological functionality.
The input format accepted are file based rasters - ERDAS IMAGINE or Tagged Image File Format (TIFF).
The .NET ToolBox for ArcGIS Desktop accepts also FileGDB Raster inputs.
For file based rasters initially the name of the InputFlowDirectionRaster define the raster format:
- .img extension (for example raster1.img) - ERDAS IMAGINE image.
- .tif extension (for example raster1.tif - image.
- The initial InputFlowDirectionRaster format can be changed by selecting the desired output in the dialog.

Parameters

Expression	Explanation
Function Name	StreamRasterToFeatures
<InputStreamRaster>	A String representing the input Stream raster dataset.
<InputFlowDirectionRaster>	A String representing the input Flow Direction raster dataset.
<OutputStreams>	A String - the full name of the output stream feature layer.
{OutputNodes}	A String - the full name of the output nodes feature layer.

ETSPath used in the table below is the full path to ETSRun.exe (E.G. "C:\Program Files\ETSpatial Techniques\ETSurface\ETSRun.exe")

UnitsDegrees

Language	Syntax
Python	subprocess.call([ETSPath, "StreamRasterToFeatures", "InputStreamRaster", "InputFlowDirectionRaster", "OutputStreams", "OutputNodes"])
.NET using ETSRun.exe	StartInfo.FileName = ETSPath StartInfo.Arguments = "StreamRasterToFeatures" "InputStreamRaster" "InputFlowDirectionRaster" "OutputStreams" "OutputNodes"
.NET using ETSOutX.dll	StreamRasterToFeatures(InputStreamRaster, InputFlowDirectionRaster, OutputStreams, OutputNodes)
ArcPy	arcpy.StreamRasterToFeatures("InputStreamRaster", "InputFlowDirectionRaster", "OutputStreams", "OutputNodes")

Notes:

<> - required parameter
{} - optional parameter
See examples for Python , .NET or ArcPy
The argument separator for StartInfo.Arguments is space. If a string might contain a space, you need to double quote it.