ETG_ExtractRasterValues

Extract Raster Values

Running programmatically

Extracts cell values from a Raster dataset into a field of the input Point feature dataset.

Inputs:

Input Point feature dataset.
Reference Raster dataset.
Field name - a Field in the input Point dataset in which the values will be extracted.

Outputs:

Updated field values in the input Point dataset.

Notes:

Values for each point are obtained from the cell in which the point is located.
The field must exist in the input Point dataset.
If the input Point dataset has different spatial reference from the input raster, the input points will be projected to the raster spatial reference in order to extract the values.
If a point is outside of the raster extent or the corresponding cell has a value of NoData, the extracted value will be NoData (-1000000000).

Running Programmatically

Parameters

Expression	Explanation
Function Name	ExtractRasterValues
<input dataset>	A String representing the input Point feature dataset.
<reference raster>	A String - the full name of the reference Raster dataset.
<field name>	A String - the field name of the field in the input Point dataset to be populated with the extracted values.

Running the function

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

Language	Syntax
Python	subprocess.call([ETSPath, "ExtractRasterValues", "input dataset", "reference raster", "field name"])
.NET using ETSRun.exe	StartInfo.FileName = ETSPath StartInfo.Arguments = "ExtractRasterValues" "input dataset" "reference raster" "field name"
.NET using ETSOutX.dll	ExtractRasterValues(input dataset, reference raster, field name)
ArcPy	arcpy.ExtractRasterValues("input dataset", "reference raster", "field name")

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.