developmentseed · kylebarron · Mar 20, 2026 · Mar 19, 2026 · Mar 19, 2026 · Mar 19, 2026
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,24 @@
 # Changelog
 
+## v0.4.0 - 2026-03-20
+
+## What's Changed
+
+* feat: expose maxRequests on COGLayer by @maxrjones in https://github.com/developmentseed/deck.gl-raster/pull/333
+* fix: Bump proj4 to fix web mercator projection by @kylebarron in https://github.com/developmentseed/deck.gl-raster/pull/346
+* fix: fix setting default values for inherited props from TileLayer by @kylebarron in https://github.com/developmentseed/deck.gl-raster/pull/347
+* fix: Render mesh from Web Mercator coordinates by @kylebarron in https://github.com/developmentseed/deck.gl-raster/pull/349
+* fix: Clamp to Web Mercator latitude bounds by @kylebarron in https://github.com/developmentseed/deck.gl-raster/pull/182
+* feat: create new `@developmentseed/proj` subpackage by @kylebarron in https://github.com/developmentseed/deck.gl-raster/pull/356
+* fix: Support TileLayer refinement strategies by @kylebarron in https://github.com/developmentseed/deck.gl-raster/pull/354
+* feat: add ndvi filter slider to NAIP-mosaic example by @kylebarron in https://github.com/developmentseed/deck.gl-raster/pull/357
+
+## New Contributors
+* @maxrjones made their first contribution in https://github.com/developmentseed/deck.gl-raster/pull/333
+* @aboydnw made their first contribution in https://github.com/developmentseed/deck.gl-raster/pull/348
+
+**Full Changelog**: https://github.com/developmentseed/deck.gl-raster/compare/v0.3.0...v0.4.0
+
 ## v0.3.0 - 2026-03-18
 
 ### What's Changed

diff --git a/docs/blog/2026-03-20-v0.4-release.md b/docs/blog/2026-03-20-v0.4-release.md
@@ -0,0 +1,70 @@
+---
+slug: v0-4-release
+title: deck.gl-raster v0.4
+authors:
+  - kylebarron
+tags: [release]
+---
+
+deck.gl-raster is enabling GPU-accelerated [GeoTIFF][geotiff] and [Cloud-Optimized GeoTIFF][cogeo] (COG) visualization in [deck.gl].
+
+[geotiff]: https://en.wikipedia.org/wiki/GeoTIFF
+[cogeo]: https://cogeo.org/
+[deck.gl]: https://deck.gl/
+
+Here's what's new in v0.4.
+
+<!-- truncate -->
+
+## Updated Example: NDVI filtering on demand
+
+Our [NAIP Mosaic example](https://developmentseed.org/deck.gl-raster/examples/naip-mosaic/) visualizes the [National Agriculture Imagery Program dataset] from [Microsoft Planetary Computer].
+
+Since NAIP data contains a near-infrared band in addition to true-color red, green, and blue, we can render spectral indexes like [Normalized Difference Vegetation Index (NDVI)][ndvi].
+
+[National Agriculture Imagery Program dataset]: https://planetarycomputer.microsoft.com/dataset/naip
+[Microsoft Planetary Computer]: https://planetarycomputer.microsoft.com/
+[ndvi]: https://www.earthdata.nasa.gov/topics/land-surface/normalized-difference-vegetation-index-ndvi
+
+NDVI has a pretty simple formula:
+
+$$
+NDVI = \frac{NIR - Red}{NIR + Red}
+$$
+
+Since we have the raw values of the near-infrared and red bands in the browser, we can compute NDVI _on the GPU_ and then apply a colormap to convert the single value to an RGB color palette.
+
+We've updated the example to also enable _GPU-based filtering_. Drag the slider to control what values of NDVI are displayed. This updates extremely fast because it's all on the GPU.
+
+[![](./../static/img/naip-ndvi-filter-animation.gif)](https://developmentseed.org/deck.gl-raster/examples/naip-mosaic/)
+
+## Render coarser image data while loading finer data
+
+Previously, when zooming in on a map, there would be a "blank" period: _after_ a parent, coarser image tile was no longer selected for display, but _before_ the child, finer image tile had successfully loaded over the network.
+
+_Now_, we support the deck.gl [`refinementStrategy`] prop. This gives the user control for refining which tiles are visible while waiting for all tiles to load.
+
+In this screenshot of the [NLCD Land Cover example](https://developmentseed.org/deck.gl-raster/examples/land-cover/), you can see the lower-resolution data is still rendered while waiting for the higher resolution data to load. (The red rectangular outlines are the boundaries of the COG tiles)
+
+[`refinementStrategy`]: https://deck.gl/docs/api-reference/geo-layers/tile-layer#refinementstrategy
+
+![](./../static/img/tile-refinement-strategy-best-available.gif)
+
+## Fixed projection handling at high latitudes
+
+Previously there could be an incorrect latitude adjustment at high/low latitudes, especially for images stored in EPSG:4326 projection.
+
+|        |                                                          |
+| ------ | -------------------------------------------------------- |
+| Before | ![](../static/img/web-mercator-high-latitude-before.jpg) |
+| After  | ![](../static/img/web-mercator-high-latitude-after.jpg)  |
+
+> Image credit [Max Jones](https://github.com/maxrjones) in [#41 (comment)](https://github.com/developmentseed/deck.gl-raster/issues/41#issuecomment-4060870467).
+
+## Avoided crash when rendering of images beyond $\pm 85.05\degree$ latitude
+
+Previously, deck.gl-raster would crash if you tried to render images that extend past the valid Web Mercator latitude range of $\pm 85.05\degree$. It should now render correctly. (Though in the Web Mercator view, such images will be clamped to the valid latitude range.)
+
+This is mostly useful when viewing global imagery in EPSG:4326 projection, such as this screenshot of the [RGB GeoTIFF example](https://developmentseed.org/deck.gl-raster/examples/cog-basic/), selecting the image sample from [EOxCloudless](https://cloudless.eox.at/).
+
+![](../static/img/eox-cloudless-screenshot.jpg)
diff --git a/docs/docusaurus.config.ts b/docs/docusaurus.config.ts
@@ -1,6 +1,8 @@
 import type * as Preset from "@docusaurus/preset-classic";
 import type { Config } from "@docusaurus/types";
 import { themes as prismThemes } from "prism-react-renderer";
+import rehypeKatex from "rehype-katex";
+import remarkMath from "remark-math";
 
 /**
  * Each package that gets TypeDoc API generation + an independent versioned
@@ -186,6 +188,14 @@ const config: Config = {
 
   trailingSlash: true,
 
+  stylesheets: [
+    {
+      href: "https://cdn.jsdelivr.net/npm/katex@0.16.11/dist/katex.min.css",
+      type: "text/css",
+      crossorigin: "anonymous",
+    },
+  ],
+
   headTags: [
     {
       tagName: "script",
@@ -225,10 +235,14 @@ const config: Config = {
           sidebarPath: "./sidebars.ts",
           editUrl:
             "https://github.com/developmentseed/deck.gl-raster/tree/main/docs/",
+          remarkPlugins: [remarkMath],
+          rehypePlugins: [rehypeKatex],
         },
         blog: {
           showReadingTime: true,
           feedOptions: { type: ["rss", "atom"] },
+          remarkPlugins: [remarkMath],
+          rehypePlugins: [rehypeKatex],
         },
         theme: {
           customCss: "./src/css/custom.css",

diff --git a/docs/package.json b/docs/package.json
@@ -24,6 +24,8 @@
     "prism-react-renderer": "^2.3.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
+    "rehype-katex": "^7.0.1",
+    "remark-math": "^6.0.0",
     "typedoc-plugin-mdn-links": "^5.1.1"
   },
   "devDependencies": {

diff --git a/docs/static/img/eox-cloudless-screenshot.jpg b/docs/static/img/eox-cloudless-screenshot.jpg
diff --git a/docs/static/img/naip-ndvi-filter-animation.gif b/docs/static/img/naip-ndvi-filter-animation.gif
diff --git a/docs/static/img/tile-refinement-strategy-best-available.gif b/docs/static/img/tile-refinement-strategy-best-available.gif
diff --git a/docs/static/img/web-mercator-high-latitude-after.jpg b/docs/static/img/web-mercator-high-latitude-after.jpg
diff --git a/docs/static/img/web-mercator-high-latitude-before.jpg b/docs/static/img/web-mercator-high-latitude-before.jpg
diff --git a/package.json b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "monorepo",
   "private": true,
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "GPU-accelerated COG and Zarr visualization in deck.gl",
   "scripts": {
     "build": "pnpm --recursive --filter=!docs build",

diff --git a/packages/affine/package.json b/packages/affine/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@developmentseed/affine",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "Port of Python `affine` package for working with affine transformations in JavaScript.",
   "type": "module",
   "main": "./dist/index.js",

diff --git a/packages/deck.gl-geotiff/package.json b/packages/deck.gl-geotiff/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@developmentseed/deck.gl-geotiff",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "GeoTIFF and Cloud-Optimized GeoTIFF visualization in deck.gl",
   "type": "module",
   "main": "./dist/index.js",

diff --git a/packages/deck.gl-raster/package.json b/packages/deck.gl-raster/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@developmentseed/deck.gl-raster",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "Georeferenced image data visualization in deck.gl",
   "type": "module",
   "main": "./dist/index.js",

diff --git a/packages/deck.gl-zarr/package.json b/packages/deck.gl-zarr/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@developmentseed/deck.gl-zarr",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "Zarr visualization in deck.gl.",
   "type": "module",
   "main": "./dist/index.js",

diff --git a/packages/epsg/package.json b/packages/epsg/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@developmentseed/epsg",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "The full EPSG projection database, compressed to 309kb for the web.",
   "type": "module",
   "exports": {

diff --git a/packages/geotiff/package.json b/packages/geotiff/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@developmentseed/geotiff",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "High-level GeoTIFF reading library.",
   "type": "module",
   "main": "./dist/index.js",

diff --git a/packages/morecantile/package.json b/packages/morecantile/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@developmentseed/morecantile",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "TypeScript port of Python morecantile — TileMatrixSet utilities.",
   "type": "module",
   "main": "./dist/index.js",

diff --git a/packages/proj/package.json b/packages/proj/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@developmentseed/proj",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "Utilities for geographic reprojections.",
   "type": "module",
   "main": "./dist/index.js",

diff --git a/packages/raster-reproject/package.json b/packages/raster-reproject/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@developmentseed/raster-reproject",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "Mesh generation for client-side raster reprojection.",
   "type": "module",
   "main": "./dist/index.js",