Threshold Raster Values
Overview
Apply a threshold to raster data and binarize pixel values based on the threshold.
The tool reads the input data according to the defined parameters, performs the corresponding GIS operation, and writes the result as a new dataset.
Use Cases
- Convert continuous raster values into binary classes for mask creation or quick classification.
- Use as an intermediate step in a longer GIS processing workflow.
- Improve efficiency for batch processing, repeated runs, or standardized delivery.
Parameters
| Parameter | Description | Notes |
|---|---|---|
| Input raster file | Raster file to threshold | Required |
| Threshold | Threshold value. Pixels below this value are set to 0, and pixels above this value are set to 1 | Required; default: 0.5 |
| Output raster file | Thresholded output raster file | Required |
Steps
- Start the tool: Open Geoprocessing Toolbox → Spatial Analysis Tools > Pixel Processing, then start the Threshold Raster Values tool pane.
- Prepare input: Select the Input raster file and confirm that the data is complete and readable.
- Set core parameters: Configure the Threshold based on the analysis goal.
- Set output: Specify the Output raster file and confirm that the output path, format, and naming rules meet downstream requirements.
- Run and inspect the result: Click Run, then check whether the value range, distribution, and spatial position of the result meet expectations.
Notes
- When multiple rasters are used together, first confirm that the coordinate system, resolution, extent, and grid alignment are consistent.