Create Gaussian Random Raster
Overview
This tool creates random raster data whose cell values follow a normal distribution.
How It Works
The tool builds an output raster grid from the specified spatial extent, cell size, and number of bands. It then generates a random value for each cell based on the specified mean and standard deviation. The spatial reference and grid structure of the output raster should match the analysis area so it can be used in later raster calculations, simulation analysis, or model initialization.
Use Cases
- Generate normally distributed random raster inputs for simulation or sensitivity analysis.
- Initialize model parameters with random values that follow a specified mean and standard deviation.
- Use as an intermediate result in longer GIS processing chains.
- Improve efficiency in batch processing, repeated execution, or standardized delivery workflows.
Parameters
| Parameter | Description | Notes |
|---|---|---|
| Normal distribution mean | The mean of the normal distribution. | Required. Default: 0.0 |
| Normal distribution standard deviation | The standard deviation of the normal distribution. | Required. Default: 1.0 |
| Number of bands | The number of bands in the raster. | Required. Default: 1 |
| Raster area | Sets the coordinate system, resolution, and extent of the output raster. | Optional |
| Output raster file | Specifies the output raster file. | Required |
Steps
- Start the tool: Open the Geoprocessing Toolbox, go to Raster Tools > Raster Data > Create Raster, and start the Create Gaussian Random Raster tool pane.
- Prepare the input: Select the Raster area according to the data type, and confirm that the input data is complete and can be read correctly.
- Set core parameters: Configure Normal distribution mean, Normal distribution standard deviation, and Number of bands based on the analysis goal. Adjust related units, thresholds, statistical methods, or interpolation settings if needed.
- Set the output: Specify the Output raster file, and confirm that the output path, format, and naming rules meet downstream use requirements.
- Run and check the result: Click Run to execute the task. After completion, check whether the result data extent, value distribution, field structure, or spatial position meets expectations.
Notes
- When calculations involve multiple rasters, first confirm that the coordinate system, resolution, extent, and grid alignment are consistent.