Resample
Overview
This tool rebuilds the output grid based on the target cell size and calculates new cell values from the input raster by using the specified resampling method. The output raster can keep the same spatial extent and coordinate reference, but the number of rows and columns, cell size, and cell values change according to the resampling rules.
Use Cases
- Quickly generate standardized results when raster resampling is required.
- Use as an intermediate step in a longer GIS processing chain before downstream analysis.
- Improve efficiency in batch processing, repeated runs, or standardized delivery workflows.
Parameters
| Parameter | Description | Notes |
|---|---|---|
| Input raster file | The raster file to resample. | Required |
| Cell size | The target cell size, in [xres, yres] format. | Required |
| Resampling method | The interpolation method used for raster resampling. | Required. Default: nearest. Options include nearest neighbor interpolation (nearest), bilinear interpolation (bilinear), cubic interpolation (cubic), cubic spline interpolation (cubic_spline), Lanczos interpolation (lanczos), average interpolation (average), most frequent value interpolation (mode), and Gaussian interpolation (gauss). |
| Output raster file | The resampled raster file. | Required |
Steps
- Start the tool: Open the Geoprocessing Toolbox, go to Raster Tools > Raster Processing, and open the Resample tool pane.
- Prepare the input: Select Input raster file and confirm that the input data is complete and readable.
- Set core parameters: Configure Cell size and Resampling method based on the analysis goal.
- Set the output: Specify Output raster file, and confirm that the output path, format, and naming rules meet downstream requirements.
- Run and check the result: Click Run to execute the task. After it finishes, check whether the output extent, value distribution, cell size, and spatial position meet expectations.
Notes
- When multiple rasters are used together in analysis, first confirm that their coordinate systems, resolutions, extents, and grid alignment are consistent.