Just wanted to update the thread with latest developments: I created a feature request on the Google Android Forum, and while the status is still marked 'New', I did get a reply. Hopefully, this will be available in future. But, as I cannot wait till that happens, I have planned to go ahead with my implementation(using the above mentioned algorithm). I am using a View to draw the heatmap, and then pass one the bitmap to a ground overlay. Unfortunately, both TileOverlay and GroundOverlay are final classes, and so I cannot do extend them to do it my way.
Here is a link to the request: https://code.google.com/p/gmaps-api-issues/issues/detail?id=5534&q=apitype%3DAndroid2&sort=-id%20-status%20project&colspec=ID%20Type%20Status%20Introduced%20Fixed%20Summary%20Stars%20Internal%20Project%20Apitype As you see, I was told to prefer TileOverlay over GroundOverlay, but am not sure how to do that, because the the transparent view I create is over the map-view, and its dimension is controlled by the screen size(match-parent), from where i get the screen location for each latlng point, and not the map itself. So if a point is not visible, then it will not be drawn by the algorithm(this was not intended, i am not able to find a workaround right now). I feel, I will have the same issue with TileOverlay, as the image generated, will be only for the part visible on screen, and so I decided to go with GroundOverlay, which was much simpler. I would really appreciate if anyone is willing to share ideas to make this better. [Unfortunately I cannot post code online.] On Friday, 21 June 2013 14:20:56 UTC-4, raj wrote: > > Hi, > > I am trying to generate a heatmap, based on a set of LatLng points in > Android Maps v2. > I am using the algorithm from here: > http://blog.furiousbob.com/2011/05/12/heating-up-my-new-xoom-tablet/ > I have gone through some examples online, but it uses Overlays which is > not just deprecated, but removed from the v2 of Maps API. > > I have been told that I can achieve the same using TileOverlay, which I > would like to try, but am unable to find even a simple example of it, which > does not use UrlTileProvider or pre-created set of images. > > I can use a View to generate the heatmap as a bitmap(via the view canvas), > but there dosen't seems to be anyway to map the bitmap to Tiles. > > PS: Currently, I am placing this view over the map, which needs a lot of > re-computations when the map is panned or zoomed, and would want to avoid > that. > > Please let me know if anyone has any recommendations. > > Best, > R > -- -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
