OLHeatmap Live Demo !

fbarriga — Sat, 14 Aug 2010 06:07:49 +0000

I hope you enjoy this OLHeatmap Demo:
http://blog.felipebarriga.cl/olheatmap_demo/

OLHeatmap (OpenLayers Heatmap)

fbarriga — Sat, 31 Jul 2010 18:54:42 +0000

After some time thinking I’ve decided to release the source code of OLHeatmap as GPLv2 to incentive others developers to join and help in the project.
Here is the original post showing OLHeatmap working and here is the project link in SourceForge (the guys at savannah.gnu.org take too long to approve a project…): http://olheatmap.sourceforge.net

OpenStreetMap Heatmap (using OpenLayers)

fbarriga — Mon, 17 May 2010 06:04:23 +0000

After been working sometime with OpenLayers I figure out how to make heatmaps generated in the user browser. Now I’m using OpenStreetMap for both map and data. As is based on OpenLayers you can use any map (including Google Maps) and get data from other places.

There are some similar projects: gheat (server side), Google Maps – Heatmap (server side, not dynamic) and HeatMapAPI (server side and need an API key). If you know another API/Library to make Heatmaps please send me an email.

Currently you can watch the following demo videos (try to watch them on HD and fullscreen):

Videos

TODO

Add Heatmap auto-rendering option
Optimize Code
Improve compatibility with Chromium (Google Chrome)
Check compatibility with other browsers
Improve GUI
Make a Javascript Library
Use JSON instead of XML
Check security on server-side
Opacity of Features
Compatibility with polygons (currently only nodes)

Bugs

Features are rendered more than once (double, triple?)

Limitations

Don’t work on Microsoft Internet Explorer (maybe it’s a feature!)