Split Raster by Blocks
Overview
Split a raster into multiple raster files by the specified block size.
How It Works
This tool cuts the input raster by rows and columns into multiple spatially adjacent smaller raster files based on the specified X and Y block sizes. Each output block preserves the cell values, coordinate reference, and spatial position of the original raster, and covers only one sub-extent of the original raster.
Use Cases
- Quickly generate standardized results when you need to run Split Raster by Blocks.
- Use it as an intermediate step in a longer GIS processing chain for subsequent analysis.
- Improve efficiency in batch processing, repeated execution, or standardized delivery workflows.
Parameters
| Parameter name | Description | Notes |
|---|---|---|
| Input raster file | Specifies the input raster file. | Required |
| X-direction block size (pixels) | Sets the block size in the X direction, in pixels. | Required; default: 256 |
| Y-direction block size (pixels) | Sets the block size in the Y direction, in pixels. | Required; default: 256 |
| Output raster folder | Sets the output folder for the raster files. | Required |
Steps
- Start the tool: Open the Geoprocessing Toolbox, go to Raster tools > Raster processing > Split raster, and open the Split Raster by Blocks tool pane.
- Prepare the input: Select Input raster file and confirm that the input data is complete and can be read normally.
- Set core parameters: Configure X-direction block size (pixels) and Y-direction block size (pixels) based on your processing goal.
- Set the output: Specify the output parameter, and confirm that the output path, format, and naming rules meet subsequent use requirements.
- Run and check the result: Click Run to execute the task. After completion, check whether the result extent, value distribution, and spatial position meet expectations.
Notes
- When multiple rasters are used in combined processing, first confirm that their coordinate systems, resolutions, extents, and grid alignment are consistent.