{"id":13822726,"url":"https://github.com/fschutt/wkb-raster","last_synced_at":"2025-04-12T13:51:07.038Z","repository":{"id":57672262,"uuid":"237789811","full_name":"fschutt/wkb-raster","owner":"fschutt","description":"Library to serialize raster data into PostGIS well-known-binary (WKB) 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wkb-raster\n\n[Well Known Binary format for PostGIS RASTER type](https://github.com/postgis/postgis/blob/master/raster/doc/RFC2-WellKnownBinaryFormat)\n\nThe WKB format for RASTER is meant for transport and\ntakes into account endianness and avoids any padding.\nStill, beside padding and endianness, it matches the\ninternal serialized format (see RFC1), for quick\ninput/output.\n\n## Example\n\n### Raster to WKB string\n\n```rust\nuse wkb_raster::{Raster, RasterBand, RasterDataSource, InMemoryRasterData, Endian};\n\n// 2x2 image bytes, u8 format\nlet bytes = vec![\n    vec![0, 1],\n    vec![1, 0],\n];\n\nlet raster = Raster {\n    endian: Endian::Big,    // note: currently Endian::Little is not supported in PostGIS\n    version: 0,             // always set to 0\n    scale_x: 1.0,           // pixel width in degrees\n    scale_y: 1.0,           // pixel height in degrees\n    ip_x: 0.0,              // upper left corner longitude in degrees\n    ip_y: 0.0,              // upper left corner latitude in degrees\n    skew_x: 0.0,            // rotation in degrees (0 to 360)\n    skew_y: 0.0,            // rotation in degrees (0 to 360)\n    srid: 4326,             // SRID EPSG identifier\n    width: 2,               // pixel columns\n    height: 2,              // rows\n    bands: vec![RasterBand {\n        is_nodata_value: false           // true only if entire band is NODATA\n        data: RasterDataSource::InMemory(\n            InMemoryRasterData::UInt8 {\n                data: bytes,\n                nodata\n            }\n        ),\n    }],\n};\n\nassert_eq!(\n    raster.to_wkb_string(),\n    String::from(\"00000000013FF00000000000003FF00000000000000000000000000000000000000000000000000000000000000000000000000000000010E600020002040000010100\")\n);\n```\n\n### WKB string to raster\n\n```rust\nuse wkb_raster::{Raster, RasterBand, RasterDataSource, InMemoryRasterData, Endian};\n\nlet parsed_raster = Raster::from_wkb_string(b\"00000000013FF00000000000003FF00000000000000000000000000000000000000000000000000000000000000000000000000000000010E600020002040000010100\").unwrap();\n\n// 2x2 image bytes, u8 format\nlet bytes = vec![\n    vec![0, 1],\n    vec![1, 0],\n];\n\nassert_eq!(parsed_raster, Raster {\n    endian: Endian::Big,\n    version: 0,\n    scale_x: 1.0,\n    scale_y: 1.0,\n    ip_x: 0.0,\n    ip_y: 0.0,\n    skew_x: 0.0,\n    skew_y: 0.0,\n    srid: 4326,\n    width: 2,\n    height: 2,\n    bands: vec![RasterBand {\n        is_nodata_value: false,\n        data: RasterDataSource::InMemory(\n            InMemoryRasterData::UInt8 {\n                data: bytes,\n                nodata\n            }\n        ),\n    }],\n});\n```\n\nLicense: MIT\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ffschutt%2Fwkb-raster","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Ffschutt%2Fwkb-raster","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ffschutt%2Fwkb-raster/lists"}