I am trying to develop hotspot map showing point density in our GIS based web application.
After searching for an option I have decided to use v.kernel command. I have a table containing some point data i.e. crime data. I need to display the hotspot of crime for a particular area.
In v.kernel vector file containing points and polygon are used for displaying hotspots/heatmaps. In QGIS there is an option for selecting some rows and exporting it to shapefile. Is there any option for running this command from a Python file or is there any better option for displaying hotspot/heatmaps?
I have tried OpenLayers heatmap, Python's heatmap and django-heat app but nothing seems to work for me. I am using OpenLayers TMS (Openlayers-2.12) for displaying maps generated through Mapnik and TileCache.