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Heat Maps
Heatmaps provide a clear visual display of densities of features for easier analysis:
Use Cases
- When zoomed-out, clusters of points aren't terribly useful (& they also take a long time to download)
- Density of Incident Reports
- Density of Volunteers or Members
See
- http://workshops.opengeo.org/tutorial-wordmap/
- http://www.slideshare.net/abeusher/heatmaps-are-the-heat
- Summary presentation from SOTM-US 2012
- http://www.sethoscope.net/heatmap/
- Python toolkit, which works well with OpenStreetMap
- http://jjguy.com/heatmap/
- Pyython toolkit using PIL
- AcidMaps: GeoServer plugin to work with WMS
- http://blog.felipebarriga.cl/programacion/openstreetmap-heatmap-using-openlayers/
- ATMs in Beacon Hill, Boston
- Clickmaps
- gHeat - heatmaps for Google Maps
- OpenLayers' Cluster Strategy (which we already use)
- OpenLayers 2 has a couple of 3rd-party contributions:
- OpenLayers 3 includes in trunk:
Note:
See TracWiki
for help on using the wiki.