opengeos / cog-tiler-wasm

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{
  "data": {
    "repo": {
      "topics": [
        "data-science",
        "geospatial",
        "raster",
        "wasm",
        "whiteboxtools"
      ],
      "is_fork": false,
      "size_kb": 349,
      "has_wiki": true,
      "homepage": "http://opengeos.org/cog-tiler-wasm",
      "languages": {
        "Rust": 82183,
        "JavaScript": 56515
      },
      "pushed_at": "2026-07-19T21:08:40Z",
      "created_at": "2026-06-17T20:46:13Z",
      "owner_type": "Organization",
      "updated_at": "2026-07-24T07:09:05Z",
      "description": "Serverless Cloud Optimized GeoTIFF (COG) dynamic tiling in WebAssembly. TiTiler-style XYZ tiles, no backend, built on whitebox-wasm.",
      "is_archived": false,
      "is_disabled": false,
      "license_spdx": "MIT",
      "default_branch": "main",
      "license_spdx_raw": "MIT",
      "primary_language": "Rust",
      "significant_languages": [
        "Rust",
        "JavaScript"
      ]
    },
    "owner": {
      "blog": "https://opengeos.org",
      "name": "Open Geospatial Solutions",
      "type": "Organization",
      "login": "opengeos",
      "company": null,
      "location": "United States of America",
      "followers": 3836,
      "avatar_url": "https://avatars.githubusercontent.com/u/129896036?v=4",
      "created_at": "2023-04-04T19:02:44Z",
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      "public_repos": 168,
      "account_age_days": 1208
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    "license": {
      "state": "standard",
      "spdx_id": "MIT",
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    },
    "activity": {
      "releases": [
        {
          "tag": "v0.3.1",
          "kind": "patch",
          "published_at": "2026-07-19T21:09:29Z"
        },
        {
          "tag": "v0.3.0",
          "kind": "minor",
          "published_at": "2026-07-19T17:35:53Z"
        },
        {
          "tag": "v0.2.6",
          "kind": "patch",
          "published_at": "2026-07-17T01:44:01Z"
        },
        {
          "tag": "v0.2.5",
          "kind": "patch",
          "published_at": "2026-07-12T04:49:29Z"
        },
        {
          "tag": "v0.2.4",
          "kind": "patch",
          "published_at": "2026-06-20T17:13:37Z"
        },
        {
          "tag": "v0.2.3",
          "kind": "patch",
          "published_at": "2026-06-18T16:31:42Z"
        },
        {
          "tag": "v0.2.2",
          "kind": "patch",
          "published_at": "2026-06-18T16:04:31Z"
        },
        {
          "tag": "v0.2.1",
          "kind": "patch",
          "published_at": "2026-06-18T04:14:59Z"
        },
        {
          "tag": "v0.2.0",
          "kind": "minor",
          "published_at": "2026-06-18T03:01:48Z"
        }
      ],
      "recent_commits": [
        {
          "oid": "770519f47692fd63a2de9a8a90a892b8998963b9",
          "body": "Fixes a coloured border drawn around every nodata boundary. Both bilinear\nsamplers interpolated raw pixels and only then tested the result against\nthe nodata sentinel, so a pixel beside nodata blended toward it, matched\nneither the sentinel nor NaN, and clamped to the bottom of the rescale\nwindow -- a blue ring under 'jet' tracing coastlines and swath edges.\n\nPatch rather than minor: no API change. The JS sampler moved to its own\nmodule for testability, but the package's exports are unchanged.",
          "is_bot": false,
          "headline": "chore(release): cog-tiler-wasm 0.3.1",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-07-19T21:08:33Z",
          "body_truncated": false,
          "is_coding_agent": false
        },
        {
          "oid": "cfbba7cc1944d207c6df2b46b2e07e10751a5f86",
          "body": "* fix: mask nodata before bilinear interpolation, not after\n\nInterpolating across a nodata boundary blends the sentinel into the\nvalue. The blend equals neither the sentinel nor NaN, so the equality\ntest applied to the *result* cannot recognise it. With the GDAL\nconvention of a large negative sentin\n[…]\neighbour falls back to nearest and holds the anchor's\nown valid value, matching the JS sampler, which already behaved this way\nfor its NaN neighbours. Thanks @coderabbitai for catching the divergence.",
          "is_bot": false,
          "headline": "fix: mask nodata before bilinear interpolation, not after (#23)",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-07-19T21:06:37Z",
          "body_truncated": true,
          "is_coding_agent": false
        },
        {
          "oid": "6af393a29ec60d9ffd18e48e0e3f3f45f82a7cb5",
          "body": "Ships the full 107-colormap set generated from the colormap sprite, up from 13\nhand-written ramps, for about 8.5 KB more wasm. Minor rather than patch: the\naddition is backward compatible, but consumers that mirrored the old short list\ncan now read the real set from colormaps().",
          "is_bot": false,
          "headline": "chore(release): cog-tiler-wasm 0.3.0",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-07-19T17:34:52Z",
          "body_truncated": false,
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        },
        {
          "oid": "ab41dc70947af64c7d153167c8f6fc3625164e4e",
          "body": "The tiler knew 13 hand-written colormaps, so a renderer offering the full\nsprite had to narrow its picker, and the shared ramps only approximated the\nsprite (the 9-stop viridis was off by up to 19/255 on a channel).\n\nA generator now derives colormap.rs from the sprite itself, reducing each row\nto the fewest anchor stops that reproduce it within 2/255. That is +8.5 KB of\nwasm for 94 more colormaps, and the ramps match the GPU renderer by\nconstruction rather than by hand.",
          "is_bot": false,
          "headline": "feat(colormap): generate all 107 ramps from the colormap sprite (#22)",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-07-19T17:34:31Z",
          "body_truncated": false,
          "is_coding_agent": false
        },
        {
          "oid": "1ed3774ed0a01d143e1bc81e5c2fa7d176b8247d",
          "body": "Require whitebox-wasm ^0.4.1, which fixes decoding of COGs written with a\nTIFF horizontal/floating-point predictor (PREDICTOR=2/3) such as NAIP tiles\n(opengeos/whitebox-wasm#6).",
          "is_bot": false,
          "headline": "chore(release): cog-tiler-wasm 0.2.6",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-07-17T01:43:16Z",
          "body_truncated": false,
          "is_coding_agent": false
        },
        {
          "oid": "d6549149a8d068d380d5a14531dd3f5f10097649",
          "body": "…(#21)\n\nnpm@latest is now npm 12, which requires Node >= 22; the pinned Node 20\nmade 'npm install -g npm@latest' fail with EBADENGINE and broke the\nv0.2.5 publish.",
          "is_bot": false,
          "headline": "ci(release): use Node 24 so the npm Trusted Publishing upgrade works …",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-07-12T04:47:29Z",
          "body_truncated": false,
          "is_coding_agent": false
        },
        {
          "oid": "f4c3d6df23a2756a7df016d4a44d800de2b76d7e",
          "body": "makeReader slurped local File sources whole with blob.arrayBuffer(),\nwhich throws NotReadableError in Chromium for multi-GB rasters (e.g.\nthe 7 GB GEBCO 2026 GeoTIFF) - and the bytes could never fit in the\nwasm heap anyway. Only the header prefix and the requested tiles are\never needed, so give Blob\n[…]\nmemory\npath unchanged.\n\nVerified in a real browser via the maplibre-gl-raster example app: the\n7 GB gebco_2026.tif opens, renders the global extent, and serves tiles\nacross zoom levels with no errors.",
          "is_bot": false,
          "headline": "fix(reader): read Blob/File sources via ranged slices; 0.2.5 (#20)",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-07-12T04:45:23Z",
          "body_truncated": true,
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        },
        {
          "oid": "2f12f5910e3a91437b7214416de1c3ebe0e8f646",
          "body": "… 0.2.4 (#19)\n\ngeotiff-geokeys-to-proj4 cannot express a projection without a\nProjCoordTransGeoKey (e.g. ESRI world projections such as Mollweide /\nESRI:54009, which ArcGIS writes only as an `ESRI PE String = PROJCS[...]`\nWKT with a user-defined model type). It silently falls back to the bare\ngeogra\n[…]\nut a projected WKT is\npresent in PCSCitationGeoKey / GTCitationGeoKey, use that WKT instead;\nproj4 parses ESRI/OGC WKT directly. Also label such sources by their WKT\nCRS name rather than \"custom CRS\".",
          "is_bot": false,
          "headline": "fix(crs): warp projected COGs whose CRS is only in an ESRI PE string;…",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-20T17:12:56Z",
          "body_truncated": true,
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        },
        {
          "oid": "69444e04dce17a6ad420cd22ddbd6414d52e7989",
          "body": "…ed API; 0.2.3 (#18)\n\ngeotiff v3 defers fileDirectory fields (large arrays like ColorMap are not\nactualized eagerly), so the v2-style direct reads `img.fileDirectory.ColorMap`\nand `img.fileDirectory.PlanarConfiguration` returned undefined. With ColorMap\nlost, paletted (categorical) COGs such as NLCD\n[…]\ntection).\n\nVerified against the NLCD COG on geotiff@3: the loaded ColorMap yields the\nofficial legend colors (water (70,107,159), evergreen forest (28,95,44),\ncrops (171,108,40), developed (235,0,0)).",
          "is_bot": false,
          "headline": "fix(geotiff): read ColorMap/PlanarConfiguration via geotiff v3 deferr…",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-18T16:30:16Z",
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        },
        {
          "oid": "4adf90dba2f66fd526d398fa20ecba81934b80b0",
          "body": "The geotiff peer was pinned to ^2.1.0, which blocked consumers on\ngeotiff@3 (e.g. GeoLibre) from installing without --legacy-peer-deps.\nOnly the stable high-level geotiff API (fromUrl, fromArrayBuffer,\ngetImage, getGeoKeys, readRasters) is used, and it is unchanged across\nthe v3 major, so widen the \n[…]\nps to geotiff@3.0.5 to exercise v3.\n\nThe other peers (whitebox-wasm ^0.4.0, proj4 ^2.15.0,\ngeotiff-geokeys-to-proj4 ^2024.4.13) already satisfy current consumer\nversions, so no change is needed there.",
          "is_bot": false,
          "headline": "fix(deps): accept geotiff v3 in peer range; bump to 0.2.2 (#17)",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-18T16:03:25Z",
          "body_truncated": true,
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        },
        {
          "oid": "506a804b7a18c52e13c7c6bd1688a599ecb9e363",
          "body": null,
          "is_bot": false,
          "headline": "chore(release): bump version to 0.2.1 (#16)",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-18T04:13:56Z",
          "body_truncated": false,
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        },
        {
          "oid": "acfa2f323c65f287fc968af22d460df34d51c467",
          "body": "Expose the existing `bidx` render param in the demo panel: a \"bands\" input\n(comma-separated 1-based indices; empty = auto). One band renders through the\ncolormap, three render as an RGB composite; changing it live re-renders.\n\nVerified in a browser with NAIP (4-band, EPSG:26911): default auto -> natural\ncolor RGB; \"1\" -> single band through gray; band order honored ([1,2,3] vs\n[3,2,1] swaps R/B).",
          "is_bot": false,
          "headline": "feat(demo): band selector (bidx) for visualization (#15)",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-18T04:08:42Z",
          "body_truncated": false,
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        },
        {
          "oid": "7804c48f4c2e4854f2464b7d20afe943aa924aa7",
          "body": "…#14)\n\nPlanar COGs (e.g. the Landsat 1984.tif composite, 3 Byte bands) rendered as\nstriped garbage: whitebox-wasm's streaming decoder is chunky-only - its\ntile_range only addresses band 0's plane and decode_tile_f64 returns a single\nband's tile, so multi-band striding read the wrong layout.\n\nRead pl\n[…]\n4.tif now renders as a clean RGB composite (river +\nforest, no stripes), preview is 100% colorful, point returns [38,83,11] for 3\nbands; single-band dem and paletted NLCD are unaffected (chunky path).",
          "is_bot": false,
          "headline": "fix: render planar (INTERLEAVE=BAND) multi-band COGs via geotiff.js (…",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-18T03:51:55Z",
          "body_truncated": true,
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        },
        {
          "oid": "bcdd5dc90cb60251c59310a718724158f769a81b",
          "body": null,
          "is_bot": false,
          "headline": "chore(release): bump version to 0.2.0 (#13)",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-18T03:00:48Z",
          "body_truncated": false,
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        },
        {
          "oid": "fae2c430ab7316030131418f63955d99e76f25c0",
          "body": "…y (#12)\n\n* feat: render curve (linear/sqrt/log), gamma, reverse colormap, opacity\n\nAdd the remaining render controls so cog-tiler-wasm can drive the same panel as\nGPU raster viewers (e.g. maplibre-gl-raster) - band/rescale/colormap were\nalready there; this adds the rest with matching math (pipeline\n[…]\nped (not\n  skipped by JS falsiness), and transferCurve uses |gamma-1|>1e-9; opacity is\n  clamped to [0,1] with a finite check.\n- demo: add explicit <label for> for the gamma and opacity inputs (a11y).",
          "is_bot": false,
          "headline": "feat: render curve (linear/sqrt/log), gamma, reverse colormap, opacit…",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-18T02:53:08Z",
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        },
        {
          "oid": "6f6526437d07642683b8f513b4244bf997d4c05b",
          "body": "…#11)\n\n* feat: TiTiler-style rendering API - bidx/RGB, 13 colormaps, preview, bbox\n\nUnify tile/image rendering on one extent renderer and add the image-generation\n+ band-selection parts of the TiTiler COG API.\n\n- Rust: add `colorize(grid, w, h, ...)` (1:1 colormap at any output size, the\n  arbitrary\n[…]\nrs before they reach\n  typed-array/canvas constructors.\n- demo: build the colormap <select> with DOM nodes instead of innerHTML.\n- cog-tiler.d.ts: update the rgbaToPng doc for the width/height params.",
          "is_bot": false,
          "headline": "feat: TiTiler rendering API - bidx/RGB, 13 colormaps, preview, bbox (…",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-18T02:21:51Z",
          "body_truncated": true,
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        },
        {
          "oid": "114672185807241627fe19b44cbf2b739c69fa0a",
          "body": "…atistics) (#10)\n\nAdd client-side equivalents of TiTiler's COG read endpoints as CogSource\nmethods. All additive (no change to the render path); they work on projected /\npaletted sources too via the existing warp path.\n\n- info() / infoGeoJSON(): bounds, count, dtype, nodata, overviews, tile size,\n  \n[…]\noat64, stats\nmin/max ~61/1524; point profiles vary correctly across the sample dome; NLCD\n(warp) point at (-100,40) returns class 82 = Cultivated Crops; click-to-point\nshows ~155 m at an Oregon pixel.",
          "is_bot": false,
          "headline": "feat: TiTiler-style read API (info, info.geojson, tilejson, point, st…",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-18T01:18:24Z",
          "body_truncated": true,
          "is_coding_agent": false
        },
        {
          "oid": "46149c04eb29c36a02334de80caaca5973f53f84",
          "body": "* feat: open local rasters (File/Blob/bytes), not just URLs\n\nLet the tiler visualize a local COG with no server.\n\n- cog-tiler.js: openCog() now accepts a URL string OR in-memory bytes (File,\n  Blob, ArrayBuffer, Uint8Array). A `makeReader` abstraction provides the byte\n  reader - HTTP range for URLs\n[…]\nComponent against malformed %-escapes (400);\n  validate root containment with path.relative instead of startsWith (blocks\n  sibling-dir traversal); return 416 for out-of-bounds / inverted byte ranges.",
          "is_bot": false,
          "headline": "feat: open local rasters + npm run dev for local testing (#9)",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-18T00:58:03Z",
          "body_truncated": true,
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        },
        {
          "oid": "7999d6e69bb0f97b44d81116ead83d4357d531e4",
          "body": "… (#8)\n\nPrefill the demo with https://data.source.coop/giswqs/opengeos/dem.tif (a real\nEPSG:3857 DEM served with HTTP range + CORS) and bump the rescale max to 1600 to\nsuit its ~60-1565 m elevation range. Demonstrates remote COG streaming on first\nvisit. Verified in a browser: auto-loads and renders (EPSG:3857, 3 levels).",
          "is_bot": false,
          "headline": "chore(demo): use the remote source.coop dem.tif as the default sample…",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-18T00:23:12Z",
          "body_truncated": false,
          "is_coding_agent": false
        },
        {
          "oid": "16f5c5a847bc16062065b2aadb15e9a15f722197",
          "body": "…e toggle (#7)\n\n* feat: ship cog-tiler.js in the npm package; MIT-only; demo globe toggle\n\nMake the reusable module a first-class part of the published package instead of\na demo-only file, relicense to MIT, and add a 3D globe toggle to the demo.\n\n- Move cog-tiler.js to the repo root (canonical packa\n[…]\nushes.\n- cog-tiler.d.ts: widen renderTileRGBA's return to\n  `Uint8Array | Uint8ClampedArray | null` (continuous tiles return the wasm\n  render() Uint8Array; paletted tiles return a Uint8ClampedArray).",
          "is_bot": false,
          "headline": "feat: publish cog-tiler.js in the npm package; MIT license; demo glob…",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-18T00:18:22Z",
          "body_truncated": true,
          "is_coding_agent": false
        },
        {
          "oid": "42e516cd3a0e3b0b2d56915e2843b0115f377585",
          "body": "…er.js module (#6)\n\n* feat(demo): warp projected COGs on the fly + paletted/categorical rendering\n\nMakes the demo render non-EPSG:3857 and paletted sources (e.g. the NLCD 2021\nland cover COG, which is Albers + an 8-bit color table) instead of rejecting\nthem.\n\n- For non-3857 sources, reproject each W\n[…]\n with regex metacharacters are matched literally.\n- demo readRender(): guard min/max against NaN (fall back to defaults) and\n  ensure min < max, so a blank/invalid rescale field can't blank out tiles.",
          "is_bot": false,
          "headline": "feat: warp projected COGs + paletted rendering, as a reusable cog-til…",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-17T23:40:19Z",
          "body_truncated": true,
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        },
        {
          "oid": "b297cd535ce65ee7fd397dadf7fa07b2f32f96fa",
          "body": "…S error (#5)\n\n* perf(demo): cache + parallel-fetch tiles, retry large headers, guard CRS\n\nAddresses slow tile loading and confusing failures on unsupported sources.\n\n- Cache decoded source tiles by level/col/row and dedupe in-flight requests\n  (getTile), so panning/zooming reuses overlapping tiles \n[…]\na tile's promise from the cache if its fetch/decode rejects, so\n  a transient network/decode error isn't cached permanently (otherwise the tile\n  would stay blank on every revisit until LRU eviction).",
          "is_bot": false,
          "headline": "perf(demo): cache + parallel tile fetch; large-header retry; clear CR…",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-17T22:36:26Z",
          "body_truncated": true,
          "is_coding_agent": false
        },
        {
          "oid": "28a2fb2a26e59d924e656c453ba52e83adcf3d2a",
          "body": "- pages.yml: build the wasm package straight into a site/ dir next to the demo,\n  copy in demo/index.html and the sample COG, cache-bust the loader, and deploy\n  to GitHub Pages (mirrors the whitebox-wasm deploy pattern).\n- demo: import the wasm package relatively (./cog_tiler_wasm.js?v=__BUILD__),\n\n[…]\n\n\nVerified locally in a browser: the demo auto-loads the sample over HTTP range\nrequests, reports \"EPSG:3857, 2 levels\", and renders the elevation dome in the\nterrain colormap, fit to the data extent.",
          "is_bot": false,
          "headline": "feat: add GitHub Pages demo with a self-hosted sample COG (#4)",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-17T21:46:19Z",
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        },
        {
          "oid": "0d5ab5a4ee05cbde12ee671faf683302323d226c",
          "body": "…s (#2)\n\nThe unpkg `?module` URL for maplibre-gl serves a UMD bundle with no ESM\ndefault export, so `import maplibregl from \"...unpkg.../maplibre-gl.js?module\"`\nthrew \"does not provide an export named 'default'\" and the map never\ninitialized - the demo was broken at load. Switch to the esm.sh build\n\n[…]\ned a real EPSG:3857 COG DEM over HTTP\nrange requests; status reported \"EPSG:3857, 3 levels\" and the terrain-colored\nraster rendered correctly georeferenced on the MapLibre map via the cog://\nprotocol.",
          "is_bot": false,
          "headline": "fix(demo): import MapLibre from esm.sh so the map actually initialize…",
          "author_name": "Qiusheng Wu",
          "author_login": "giswqs",
          "committed_at": "2026-06-17T21:27:27Z",
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