Raster Slope

Open Table of Contents ToolBox Implementation
Calculates the slope of each cell of the input raster in percent or degrees. The result added to ArcMap is categorized in 8 groups.

Read more about Slope and its importance here

Inputs:

  • Input raster dataset
  • Output raster name and format
  • The unit of the output slope - Degrees or Percentage (rise/run)

Output:

  • A floating point raster.

Example:

Source Elevation raster

Result Slope raster (Degrees option used)

Notes:

  • Initially the name of the output raster defines the raster format
    • no extension specified - ESRI binary GRID
    • .img extension (for example raster1.img) - ERDAS IMAGINE image.
    • .tif extension (for example raster1.tif - Tagged Image File Format (TIFF) image.
  • The initial output raster format can be changed by selecting the desired output in the dialog.
  • Currently only file based rasters are supported. Rasters cannot be stored in a GeoDatabase. After you get the desired result, you can export the raster to a GeoDatabase using the standard ArcGIS tools.
  • The input raster must be in a projected coordinate system.

ToolBox implementation

Command line syntax

ETS_GPRasterSlope <Input Raster>  <Out Raster> <Slope Units>

Parameters

Expression Explanation
<Input Raster> A Raster dataset or Raster layer
<Out Raster> A String - the full name of the output raster (A raster with the same full name should not exist). The output raster type depends on the extension of the output file(see Notes above)
<Slope Units> A String indicating the slope units. Valid inputs "Degrees" and "Percent"

Scripting syntax

ETS_GPRasterSlope (Input Raster,  Out_Raster, Slope Units)

See the explanations above:
<> - required parameter
{} - optional parameter

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Copyright: Ianko Tchoukanski