diff --git a/examples/numpytile.html b/examples/numpytile.html
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index 0000000000..4869d7d849
--- /dev/null
+++ b/examples/numpytile.html
@@ -0,0 +1,20 @@
+---
+layout: example.html
+title: Rendering 16-bit NumpyTiles
+shortdesc: Renders a multi-byte depth source image directly using webGL.
+docs: >
+ Use the NumpyTile format to render multibyte raster data.
+tags: "numpytiles"
+---
+
+
+
+
+
diff --git a/examples/numpytile.js b/examples/numpytile.js
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+++ b/examples/numpytile.js
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+import Map from '../src/ol/Map.js';
+import TileLayer from '../src/ol/layer/WebGLTile.js';
+import View from '../src/ol/View.js';
+
+import DataTileSource from '../src/ol/source/DataTile.js';
+import OsmSource from '../src/ol/source/OSM.js';
+import {fromLonLat} from '../src/ol/proj.js';
+
+// 16-bit COG
+// Which will be served as NumpyTiles.
+const COG =
+ 'https://storage.googleapis.com/open-cogs/stac-examples/20201211_223832_CS2_analytic.tif';
+
+function numpyTileLoader(z, x, y) {
+ const url = `https://api.cogeo.xyz/cog/tiles/WebMercatorQuad/${z}/${x}/${y}@1x?format=npy&url=${encodeURIComponent(
+ COG
+ )}`;
+
+ return fetch(url)
+ .then((r) => r.arrayBuffer())
+ .then((buffer) => NumpyLoader.fromArrayBuffer(buffer)) // eslint-disable-line no-undef
+ .then((numpyData) => {
+ // flatten the numpy data
+ const dataTile = new Float32Array(256 * 256 * 5);
+ const bandSize = 256 * 256;
+ for (let x = 0; x < 256; x++) {
+ for (let y = 0; y < 256; y++) {
+ const px = x + y * 256;
+ dataTile[px * 5 + 0] = numpyData.data[y * 256 + x];
+ dataTile[px * 5 + 1] = numpyData.data[bandSize + y * 256 + x];
+ dataTile[px * 5 + 2] = numpyData.data[bandSize * 2 + y * 256 + x];
+ dataTile[px * 5 + 3] = numpyData.data[bandSize * 3 + y * 256 + x];
+ dataTile[px * 5 + 4] =
+ numpyData.data[bandSize * 4 + y * 256 + x] > 0 ? 1.0 : 0;
+ }
+ }
+ return dataTile;
+ });
+}
+
+const interpolateBand = (bandIdx) => [
+ 'interpolate',
+ ['linear'],
+ ['band', bandIdx],
+ ['var', 'bMin'],
+ 0,
+ ['var', 'bMax'],
+ 1.0,
+];
+
+const createNumpyStyle = (bandMin, bandMax) => ({
+ color: [
+ 'array',
+ interpolateBand(3),
+ interpolateBand(2),
+ interpolateBand(1),
+ ['band', 5],
+ ],
+ variables: {
+ 'bMin': bandMin,
+ 'bMax': bandMax,
+ },
+});
+
+const numpyLayer = new TileLayer({
+ style: createNumpyStyle(3000, 18000),
+ source: new DataTileSource({
+ loader: numpyTileLoader,
+ bandCount: 5,
+ }),
+});
+
+const map = new Map({
+ target: 'map',
+ layers: [
+ new TileLayer({
+ source: new OsmSource(),
+ }),
+ numpyLayer,
+ ],
+ view: new View({
+ center: fromLonLat([172.933, 1.3567]),
+ zoom: 15,
+ }),
+});
+
+const configureInputs = () => {
+ const colorFloor = document.getElementById('color-floor');
+ const colorCeil = document.getElementById('color-ceil');
+
+ colorFloor.addEventListener('input', (evt) => {
+ numpyLayer.updateStyleVariables({
+ 'bMin': parseFloat(evt.target.value),
+ 'bMax': parseFloat(colorCeil.value),
+ });
+ });
+
+ colorCeil.addEventListener('input', (evt) => {
+ numpyLayer.updateStyleVariables({
+ 'bMin': parseFloat(colorFloor.value),
+ 'bMax': parseFloat(evt.target.value),
+ });
+ });
+};
+configureInputs();