Comments on: Using MongoDb to store geographic data http://www.paolocorti.net/2009/12/06/using-mongodb-to-store-geographic-data/ a blog about GIS, CMS, agile development and design patterns Fri, 12 Mar 2010 00:18:24 +0000 http://wordpress.org/?v=2.7.1 hourly 1 By: Paolo Corti http://www.paolocorti.net/2009/12/06/using-mongodb-to-store-geographic-data/comment-page-1/#comment-94401 Paolo Corti Sun, 31 Jan 2010 17:05:31 +0000 http://www.paolocorti.net/?p=202#comment-94401 Stefan, thanks for the links. I were not aware of this attempt, I may give a try sooner or later at it. If only I had more spare time nowadays :( Stefan, thanks for the links. I were not aware of this attempt, I may give a try sooner or later at it. If only I had more spare time nowadays :(

]]> By: stefan http://www.paolocorti.net/2009/12/06/using-mongodb-to-store-geographic-data/comment-page-1/#comment-92946 stefan Thu, 28 Jan 2010 05:01:31 +0000 http://www.paolocorti.net/?p=202#comment-92946 the other experiment using Spatial Data with CouchDB by Volker Mische, blog: http://vmx.cx/cgi-bin/blog/index.cgi/2009-12 http://vmx.cx/cgi-bin/blog/index.cgi/2009-11 he presented this actually at FOSS4G 2009 the other experiment using Spatial Data with CouchDB by Volker Mische, blog:
http://vmx.cx/cgi-bin/blog/index.cgi/2009-12
http://vmx.cx/cgi-bin/blog/index.cgi/2009-11
he presented this actually at FOSS4G 2009

]]> By: Paolo Corti http://www.paolocorti.net/2009/12/06/using-mongodb-to-store-geographic-data/comment-page-1/#comment-73412 Paolo Corti Mon, 14 Dec 2009 11:20:26 +0000 http://www.paolocorti.net/?p=202#comment-73412 @Joel: you can't. We need a spatial extension for MongoDb (maybe written in c++ with OGR) to do that. My post - as pointed out - is rather experimental than useful :D And maybe can be considered a nice sample to use the OGR and MongoDb Python API ;-) @Joel: you can’t. We need a spatial extension for MongoDb (maybe written in c++ with OGR) to do that. My post - as pointed out - is rather experimental than useful :D And maybe can be considered a nice sample to use the OGR and MongoDb Python API ;-)

]]> By: Joel Carranza http://www.paolocorti.net/2009/12/06/using-mongodb-to-store-geographic-data/comment-page-1/#comment-72838 Joel Carranza Fri, 11 Dec 2009 22:31:37 +0000 http://www.paolocorti.net/?p=202#comment-72838 Interesting, but I am confused. How do you query the GIS data spatially? Interesting, but I am confused. How do you query the GIS data spatially?

]]> By: Regina http://www.paolocorti.net/2009/12/06/using-mongodb-to-store-geographic-data/comment-page-1/#comment-72720 Regina Fri, 11 Dec 2009 13:42:08 +0000 http://www.paolocorti.net/?p=202#comment-72720 No didn't see that link. Thanks for that. Will check it out. I feel a bit dated not knowing anything about NOSQL dbs. No didn’t see that link. Thanks for that. Will check it out.

I feel a bit dated not knowing anything about NOSQL dbs.

]]> By: Paolo http://www.paolocorti.net/2009/12/06/using-mongodb-to-store-geographic-data/comment-page-1/#comment-72647 Paolo Fri, 11 Dec 2009 08:15:14 +0000 http://www.paolocorti.net/?p=202#comment-72647 Dear Regina, have you checked this: http://www.mongodb.org/display/DOCS/Comparing+Mongo+DB+and+Couch+DB I think it is a very nice write up, even if from the mongodb developers point of view. I think one intriguing thing about CouchDb is the RESTful JSON API: that is spectacular! I want to give it a try sooner or later Dear Regina, have you checked this: http://www.mongodb.org/display/DOCS/Comparing+Mongo+DB+and+Couch+DB
I think it is a very nice write up, even if from the mongodb developers point of view.
I think one intriguing thing about CouchDb is the RESTful JSON API: that is spectacular! I want to give it a try sooner or later

]]> By: Regina http://www.paolocorti.net/2009/12/06/using-mongodb-to-store-geographic-data/comment-page-1/#comment-72624 Regina Fri, 11 Dec 2009 06:45:01 +0000 http://www.paolocorti.net/?p=202#comment-72624 Paolo, Nice. I've always wondered about these NoSQL databases I've been hearing a lot of lately. One thing I'm unclear of -- what the main difference between MongoDb and CouchDb - like why would I choose one over the other. At a glance they seem the same to me. All I know about either of them is that they store their data using some variant of JSON and I assume use some sort of JQuery like thing to query. But their seem to be all these NOSQL dbs sprouting up everytime I open my eyes, so lost in a pool of NOSQLs. Paolo,

Nice. I’ve always wondered about these NoSQL databases I’ve been hearing a lot of lately. One thing I’m unclear of — what the main difference between MongoDb and CouchDb - like why would I choose one over the other. At a glance they seem the same to me.

All I know about either of them is that they store their data using some variant of JSON and I assume use some sort of JQuery like thing to query. But their seem to be all these NOSQL dbs sprouting up everytime I open my eyes, so lost in a pool of NOSQLs.

]]> By: Jorge Vargas http://www.paolocorti.net/2009/12/06/using-mongodb-to-store-geographic-data/comment-page-1/#comment-72256 Jorge Vargas Thu, 10 Dec 2009 04:55:33 +0000 http://www.paolocorti.net/?p=202#comment-72256 Very nice read thank you, I'll play with this myself some day :) Very nice read thank you, I’ll play with this myself some day :)

]]> By: Paolo Corti http://www.paolocorti.net/2009/12/06/using-mongodb-to-store-geographic-data/comment-page-1/#comment-71633 Paolo Corti Mon, 07 Dec 2009 17:56:05 +0000 http://www.paolocorti.net/?p=202#comment-71633 excellent catch Mateusz: according to this doc: http://www.mongodb.org/display/DOCS/Advanced+Queries#AdvancedQueries-ValueinanEmbeddedObject it should do the trick, but perfoming this query is not working: print 'There are %s counties with geom.type = Polygon' % collection.find({"geom.type": "Polygon"}).count() output: 0 ideas? excellent catch Mateusz: according to this doc: http://www.mongodb.org/display/DOCS/Advanced+Queries#AdvancedQueries-ValueinanEmbeddedObject
it should do the trick, but perfoming this query is not working:
print ‘There are %s counties with geom.type = Polygon’ % collection.find({”geom.type”: “Polygon”}).count()
output: 0
ideas?

]]> By: Paolo Corti http://www.paolocorti.net/2009/12/06/using-mongodb-to-store-geographic-data/comment-page-1/#comment-71630 Paolo Corti Mon, 07 Dec 2009 17:39:41 +0000 http://www.paolocorti.net/?p=202#comment-71630 I am not sure that MongoDb has the ability to query nested JSON objects. This feature would be impressive, but I am afraid that you have to limit your query on a key/value basis. I am going to try to figure out and I will let you know. I am not sure that MongoDb has the ability to query nested JSON objects. This feature would be impressive, but I am afraid that you have to limit your query on a key/value basis. I am going to try to figure out and I will let you know.

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