add a note about intensity in data

beefo · Feb 3, 2014 · 9c4e73c · 9c4e73c
1 parent 4442519
commit 9c4e73c
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/README.md b/README.md
@@ -40,6 +40,8 @@ Constructs a heatmap layer given an array of `LatLng` points and an object with
 - **blur** - amount of blur, `15` by default
 - **gradient** - color gradient config, e.g. `{0.4: 'blue', 0.65: 'lime', 1: 'red'}`
 
+Optional third argument in each `LatLng` point (`altitude`) represents point intensity.
+
 ```js
 heat.setOptions(options);
 ```