{"name": "Terrain Analysis Symbology", "package_name": "terrain_analysis_symbology", "description": "Symbolize slope/aspect rasters with the Van Zuidam (1983) classification and compass-direction classes, plus an Aspect-Slope Bivariate Overlay (combined hue/saturation raster, with optional hillshade-blended brightness).", "about": "Adds three Processing algorithms for terrain-derived raster visualization. \"Van Zuidam (1983) Slope Classification Symbology\" classifies a slope raster into the 7 standard Van Zuidam geomorphological classes (Flat through Extremely Steep, in Degree or Percent) and applies a Singleband Pseudocolor (Discrete) renderer with class-name legend labels. \"Aspect Direction Symbology (Compass Classes)\" classifies an aspect raster into 4 or 8 compass-direction classes (N/E/S/W or N/NE/E/SE/S/SW/W/NW), each centered on its true compass direction, using a cyclic HSV color wheel suited to circular data, with an optional compass-rose preview. \"Aspect-Slope Bivariate Overlay\" combines a Slope raster and an Aspect raster into one new RGB(A) raster (hue=aspect, saturation=slope steepness), following the classic aspect-slope mapping technique of Moellering & Kimerling (1990) and Brewer & Marlow (1993), with an optional Hillshade input (Kennelly & Kimerling, 2001) that blends real relief shading into the brightness channel instead of a flat constant -- see README for references. The first two algorithms only change the input layer's symbology; the third creates a new raster file, since QGIS has no live renderer that can combine two input rasters into one color. Co-developed by Muhammad Fatahillah Mubarak together with Claude (Anthropic) as a coding assistant.", "homepage": "https://github.com/fatahillahmubarak/terrain-analysis-aspect-slope", "repository": "https://github.com/fatahillahmubarak/terrain-analysis-aspect-slope", "tracker": "https://github.com/fatahillahmubarak/terrain-analysis-aspect-slope/issues", "author": "Muhammad Fatahillah Mubarak, with Claude (Anthropic)", "tags": ["raster", "symbology", "classification", "terrain", "slope", "aspect", "van zuidam", "geomorphology", "compass", "direction", "color ramp", "pseudocolor", "bivariate", "aspect-slope map", "overlay"], "downloads": 7, "latest_version": "1.2.1", "versions": [{"version": "1.2.1", "experimental": true, "qgis_min": "3.18.0", "qgis_max": "3.99.0", "downloads": 7, "uploaded_by": "fatahillahmubarak", "upload_datetime": "2026-08-20T23:17:15.958835"}]}