Use standard tile coords

examples/geojson-vt.js

@@ -77,7 +77,7 @@ fetch(url).then(function(response) {
     tileLoadFunction: function(tile) {
       const format = tile.getFormat();
       const tileCoord = tile.getTileCoord();
-      const data = tileIndex.getTile(tileCoord[0], tileCoord[1], -tileCoord[2] - 1);
+      const data = tileIndex.getTile(tileCoord[0], tileCoord[1], tileCoord[2]);
 
       const features = format.readFeatures(
         JSON.stringify({

examples/mapbox-vector-tiles-advanced.js

@@ -21,7 +21,7 @@ function tileUrlFunction(tileCoord) {
       '{z}/{x}/{y}.vector.pbf?access_token=' + key)
     .replace('{z}', String(tileCoord[0] * 2 - 1))
     .replace('{x}', String(tileCoord[1]))
-    .replace('{y}', String(-tileCoord[2] - 1))
+    .replace('{y}', String(tileCoord[2]))
     .replace('{a-d}', 'abcd'.substr(
       ((tileCoord[1] << tileCoord[0]) + tileCoord[2]) % 4, 1));
 }

examples/xyz-esri-4326-512.js

@@ -21,7 +21,7 @@ const map = new Map({
         tileUrlFunction: function(tileCoord) {
           return urlTemplate.replace('{z}', (tileCoord[0] - 1).toString())
             .replace('{x}', tileCoord[1].toString())
-            .replace('{y}', (-tileCoord[2] - 1).toString());
+            .replace('{y}', tileCoord[2].toString());
         },
         wrapX: true
       })