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AR1/docs/analysis-tools/raster-comparison.md

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Raster Comparison

Compare two raster datasets to identify differences.

Overview

Raster comparison analyzes differences between two raster datasets, calculating change statistics and generating difference rasters.

Inputs

  • Raster Dataset 1: First raster dataset
  • Raster Dataset 2: Second raster dataset
  • Comparison Method: Difference calculation method

Outputs

Comparison results containing:

  • Difference raster
  • Change statistics
  • Summary report

Comparison Methods

  • Difference: Pixel value differences
  • Percent Change: Percentage change
  • Ratio: Ratio of values

Example

{
  "raster_dataset_id_1": 125,
  "raster_dataset_id_2": 126,
  "method": "difference"
}

Use Cases

  • Change detection
  • Time series analysis
  • Quality comparison
  • Validation

Notes

  • Rasters must have compatible extents
  • Resampling may be required
  • Results depend on comparison method
  • Processing time depends on raster sizes

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