how to make a HeatMapLayer?

[yozochen]

how to make a HeatMapLayer?  with api for Javascript, please!

[HaroldBostic]

You may want to look at:
http://www.heatmapapi.com/

also

this blog:

Not sure if the example in the blog still works, but the code is there
http://sathyaprasad.appspot.com/heatmapapi.html

[derekswingley1]

We don't have anything natively in the API but you could build your own. I would take a look at the Canvas with Raster Layer sample as a starting point.