Identifies those cells within the analysis extent that will be considered when performing an operation or a function. Setting an analysis mask means that processing will only occur on selected locations and that all other locations will be assigned values of NoData.
Setting an analysis mask is a three-step process:
- An analysis mask must first be created if you do not already have one. It can be a raster or a feature class dataset.
- If the analysis mask is a raster, all cells of interest have a value, and all other cells have a value of NoData. Only cells with values will be considered in the analysis. The Reclassify tool can help create a raster analysis mask.
- If the analysis mask is a feature dataset, only locations containing features will be considered in the analysis.
An overview of the command line window
Mask <raster_dataset>
| Parameters |
Explanation |
Datatype |
|---|
| <raster_dataset> |
A raster dataset in which all cells of interest have a value, and all other cells have a value of NoData. |
Raster Dataset |
Data types for geoprocessing tool parameters
Command line example
Mask H:\Willamette\oldgrow_fir
An overview of scripting in geoprocessing
Mask (raster_dataset)
| Parameters |
Explanation |
Datatype |
|---|
| raster_dataset (Required) |
A raster dataset in which all cells of interest have a value, and all other cells have a value of NoData. |
Raster Datatset |
Data types for geoprocessing tool parameters
Script example
import arcgisscripting
gp = arcgisscripting.create()
gp.workspace = "h:/workspace"
gp.toolbox = "SA"
gp.Mask = "H:/Willamette/oldgrow_fir"
