PostGIS
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Novella
Solutions
52 lines
948 B
Markdown
52 lines
948 B
Markdown
# Raster Histogram
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Analyze pixel value distributions in raster datasets.
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## Overview
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Raster histogram analysis generates histograms showing the distribution of pixel values in raster datasets.
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## Inputs
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- **Raster Dataset**: Raster dataset to analyze
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- **Band** (optional): Band to analyze (default: first band)
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- **Bins** (optional): Number of histogram bins
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## Outputs
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Histogram data containing:
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- Value ranges for each bin
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- Pixel counts for each bin
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- Statistics (min, max, mean, median)
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## Example
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```json
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{
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"raster_dataset_id": 125,
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"band": 1,
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"bins": 256
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}
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```
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## Use Cases
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- Data distribution analysis
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- Quality assessment
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- Value range identification
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- Visualization preparation
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## Notes
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- NoData values excluded
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- Results depend on raster data type
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- Bins affect histogram resolution
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- Large rasters may take time to process
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## Related Documentation
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- [Analysis API](../api/analysis.md)
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- [Raster Tools](raster.md)
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