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I think the best approach is to go with Mapserver or Geosever (since you are new, Geoserver will look a lot easier) Once you set a WMS service with geoserver, you can add the resulting WMS to your OpenLayers project. Geoserver automatically returns only the information in the extent of the current view, also you can set the range of visible scales on your ...


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This article on the marching squares algorithm outlines the general algorithm. Here is a good implementation, in various languages, though sadly not Python. Having said that, the algorithm basically just operates on arrays in loops, so ought to be reasonably easy to port. I have used the Java version to do contours and can confirm that it works, in the ...


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What are looking for is an OpenLayers strategy. You do not use this directly, but one of the subclasses, such as BBOX or Cluster or Fixed. The cluster strategy does as it says and combines point that are close together into clusters, based on a threshold, which will lead to much faster rendering times when you have many points in view. Unfortunately, the ...


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You shouldn't need to re-implement the wheel, there are lots of geospatial libraries out there. As you've noticed, PostGIS includes a buffer function, unfortunately MySQL has sub-standard spatial support and therefore doesn't include one. If possible you may wish to consider switching to PostGIS if spatial functionality is important to you. There are ...



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