If you’ve ever needed to export a shapefile or feature class to a GeoJSON text file, there’s a handy ESRI-supported Python script available. It’s easy to install into your ArcToolbox, and works quite well:
http://arcscripts.esri.com/details.asp?dbid=15545
So what is GeoJSON? JSON stands for JavaScript Object Notation, an encoding format for web object data. GeoJSON is just a JSON object that contains spatial information. In a sense, it’s a highly portable web container for geographic data. Many web mapping programs can parse it, including PostGIS and OpenLayers. You can also use it when programming with the Google Maps API.
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