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I use the ST_Simplify() function in PostGIS, and am moving to a new geostack with mongodb. Does it have a comparable function?

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No - there are three (well looks like two really) GeoSpatial commands in MongoDB. One is nearest and the other is search. I guess simplification is left as an exercise for the reader.

  • OK. I thought I was missing something. Many thanks, iant. – mtn.biker Jul 2 '13 at 11:24
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You could simplify your data before saving them into mongodb. I use the node.js mapshaper library to achieve this.

The main challenge (in my view) with simplified geojson data is that mongodb does not support more than one index pr. collection.

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