Comments on: HeatMapping the Spread of WalMart

By: Todd

Todd — Thu, 07 Jan 2010 17:52:20 +0000

Thanks for sharing this visualization. Is it possible to cut out the animation? Essentially, what I’ve tried to do is change heatMap.dataProvider = walmartsInTimeRange; to heatMap.dataProvider = walmarts; (and disabled the doAnimation timer). Yet nothing appear on the map.

Why would I want to skip the animation (which is cool, btw)? Because my data set is very large (4k+ points) and the animation seems to bog down.

By: Gilbert

Gilbert — Thu, 30 Apr 2009 19:24:10 +0000

Michael,

Thanks. I will experiment with that code.

Cheers

By: Michael

Michael — Wed, 29 Apr 2009 19:15:28 +0000

Gilbert,

The Modest Maps team has put together an example of how to get a heat map up and running with the latest version of their framework.

I haven’t compiled their example myself, but I assume zooming works as you’d expect. Here is the class: http://modestmaps.mapstraction.com/svn/branches/no-tweenlite/samples/as3/ModestMapsExamples/HelloHeatmap.as

By: Gilbert

Gilbert — Tue, 28 Apr 2009 22:01:39 +0000

Michael,

Thanks for posting the heat map classes.

I tried to replicate your example to make some changes and experiment a little.

However, in your code you have:

and in the latest version I needed to use:

That seems to work, but when zooming, the heat map x and y are not in synch with the map. Any ideas how to solve that?