I try to generate a density heatmap to display my points density but I don't know what to write in the weightAttr area of the tamplate furnished in the doc because I just have plenty of points but they don't have weight attribute.
I can generate it with QGIS but the sld export isn't available for heatmap.
I can also generate it using openlayers from geojson file but I have more than 1.000.000 points and it crashes.
I think it's better to use postgis and geoserver to generate wms to display so many points.