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I am interested in understanding and applying practical geo-spatial examples for some of the transportation data that I have. I have several geocodes that I will pull from the database, and display in maps - as map clusters and points, similar to Redfin.

I want to unlock more value of my data - for instance allow the user to draw a ploygon and compute the number of points inside the polygon. Click on 2 markers and display distance etc. This makes the map more feature rich as opposed to a simple cluster of markers.

I like what leaflet offers and the abilities in Postgres/PostGIS to issue geospatial queries, and I am looking to build UI where users can query in a more intuitive mouse click and drag operations. Please point me to some good examples or sites that have implemented this.

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2 Answers

up vote 2 down vote accepted

Each of the things you've mentioned is easily do-able in web mapping APIs like ArcGIS Server JS API and OpenLayers. For example:

It would be relatively simple to stitch all of this functionality together.

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Nice. Openlayers seems to have most of what I am looking for. I rather stick to that, as I need to present google, live and ArcGIS maps as basemap options. –  Ramesh Sep 7 '12 at 0:27
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Example of Desktop like UI using ExtJS and Openlayers

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Can you share more examples? While this site has a ton of features, I am looking for something more simple. An easy way to draw, measure, query points inside polugon etc. –  Ramesh Aug 19 '12 at 19:07
    
sorry for being late but the second answer may be the answer –  geogeek Aug 24 '12 at 3:34
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