Thinking in GIS

In many situations, in your web applications, you will need a feature for geocoding an address, a city, a country...A possible approach is to use the Javascript API of the main geocoding services (Google Maps, Yahoo! Maps, GeoNames...).But as I have showed in a previous post, if you are using Python, there is an excellent API that will take care of this, without Javascript headaches: GeoPy.In this post I will show how to use geoPy, OpenLayers and a bit of JQuery to assemble a simple but nice tool for geocoding within OpenLayers.In my server code I will use Django but...
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This time i will introduce a really brilliant framework that every serious Web/GIS developers should be aware of: GeoDjango.Django is a Python Web framework for agile developers. It implements best web frameworks practices like coding by convention, MVC, ORM, REST, URL dispatcher and so on. Django is for Python what Rails is for Ruby, Grails is for Java, and MonoRail (and now ASP.NET MVC) is for .NET.GeoDjango is a Django application that is now included in the Django trunk with a lot of excellent stuff for developing GIS web application.GeoDjango Building BlocksGeoDjango installation is based on Python, Django and two...
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My friend Diego Guidi is the smartest GIS/.NET developer I personally know here in Italy. He is the developer of NetTopologySuite, the port in the .NET world of the popular Java's JTS Topology Suite from VIVID Solutions. I wanted, sooner or later, write some stuff here about WMS and TMS, and now I am very happy that Diego asked me to publish this brilliant article about this topic.First of all, let me thanks Paolo for hosting this post! I hope that this article can be interesting and useful like other stuff that you can find here...IntroductionThere are a lot of...
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In the previous post we have seen an introduction to FeatureServer, and we were just playing with the base edit sample, with the scribble layer.Now it is time to use FeatureServer with our datasets: I am assuming that you will want to create FeatureServer services for shapefiles, PostGIS layers, OpenStreetMap, Twitter and Flickr.Data preparation for this demo1) shapefilesIf you want to follow my steps, you can download the sample shapefiles of New York I was using to assemble this demo here: select New York as a state and then as a county, and download the Block Groups and the Roads,...
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