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but user like to see All of the trace. User would like to see the map for the entire world. Therefore, for Google Maps/OSM to be able to show user the entire world, it has to download the entire map for the entire world. This is patently false. What you need is to allow the user to browse and filter through their traces. You can start by showing user ...


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Assuming you are going to be doing some very geospatially analysis on this data. You should seriously consider moving to a GIS focused DB solution such as PostGIS. With that focus the plugins and geoanalysis tools are extensive and will prevent you from rebuilding the wheel. Most, if not all of the analysis you will undoubtedly be doing on this data has ...


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Can you just generalize the points? All points within x location of y show as x1. Most of the time we are generally slothlike so 99% of points can be glumped (I just made up that word) into 1 point as a center point (this is just noise generally). Then once you zoom in past a certain scale then hey presto more appear. Generalization for the static time with ...


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The answer to this kind of issue should be to rasterize the information on to tiles on the server and simply serve the user tiles of the routes that they want to see. There are a plethora of options for doing this, but I think this train of thought is the best solution. Render the desired view on the server and only pass the tiles to the user, wash and ...


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You are actually asking two questions. One is how to merge census data to your shape file. This is not very difficult, you may want to check out merge or spCbind, or this answer. It hard to say without knowing the structure of your data. The second question is about how to do the weighted sampling. I have a suggestion below that uses spsample from the sp ...



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