diff --git a/lib/www/client/source/src/lib/deck.gl/DougalBinaryLoader.js b/lib/www/client/source/src/lib/deck.gl/DougalBinaryLoader.js
index 3e5bd3b..1998f6d 100644
--- a/lib/www/client/source/src/lib/deck.gl/DougalBinaryLoader.js
+++ b/lib/www/client/source/src/lib/deck.gl/DougalBinaryLoader.js
@@ -84,8 +84,12 @@ const DougalBinaryLoader = {
       for (let k = 0; k < values.length; k++) {
         values[k] = new (k === 0 ? Uint16Array : k === 1 ? Uint32Array : k === 2 ? BigUint64Array : Float32Array)(totalCount);
       }
+    } else if (udv == 4) {
+      for (let k = 0; k < values.length; k++) {
+        values[k] = new (k === 0 ? Uint16Array : k === 1 ? Uint32Array : k === 2 ? Uint16Array : Float32Array)(totalCount);
+      }
     } else {
-      throw new Error(`Invalid udv: Expected 0, 1, or 2; found ${udv}`);
+      throw new Error(`Invalid udv: Expected 0, 1, 2, or 4; found ${udv}`);
     }
 
     let offset = 0;
@@ -110,7 +114,7 @@ const DougalBinaryLoader = {
       offset += chunk.jCount;
     }
 
-    console.log(`Parsed ${totalCount} points, ${values.length} value arrays`);
+    console.log(`Parsed ${totalCount} points, ${values.length} value arrays, udv = ${udv}`);
 
     const attributes = {
       getPosition: {