If we are talking about the same kind of heat maps you might want to look at the TomTom map API for a quick and dirty yet solid solution. Just supply a whack of coordinates and let TomTom do the work. The Heat maps will zoom in and de-cluster.
Example below. http://www.frogclassifieds.com/tomtom/markers-clustering.html On 28 October 2016 at 09:05, Никита Веневитин <venevitinnik...@gmail.com> wrote: > Hi! > Is it possible to use JSON facet API to get heatmaps? >