Natural Breaks Raster Symbology
Classify and symbolize raster layers with Natural Breaks (Jenks), Equal Interval, or Quantile, with an optional histogram preview.
Adds a Processing algorithm that computes class breaks for a raster band using exact Fisher-Jenks Natural Breaks (dynamic programming), Equal Interval, or weighted Quantile methods, then applies a Singleband Pseudocolor (Discrete) renderer using any QGIS color ramp. Large rasters are read at a decimated resolution and summarized into a weighted histogram so the computation stays fast without loading every pixel into memory. An optional histogram preview (requires matplotlib) lets you compare methods and class counts visually before committing to a symbology. Originally built while producing an AHP + GIS flood-hazard map for Samarinda, Indonesia, then generalized into a standalone tool. Co-developed by Muhammad Fatahillah Mubarak together with Claude (Anthropic) as a coding assistant.