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My application needs to store a road network and provide editing functionality for that network (editing/updating/removing lanes, signs, traffic lights, speed limits info, etc.).

I find JOSM tool to be very convenient - it has a really nice user experience.

This tool works with local .osm files only.

It is really easy to export the updated .osm file into a database with osm2pgrouting tool for later routing tasks.

On the other side there is QGIS/uDIG which can work with a PostGIS database layers. So, as I understand, all my road network edits will be stored in a PostGIS-enabled database.

My question is - is there any real advantage in using QGIS/uDIG for my task?

(except of getting rid of continuous usage of osm2pgrouting after JOSM edits of the .osm file).

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    +1 for liking JOSM's user experience. I find it much friendlier and powerful to use than "proper" GIS tools (looking at you, QGIS).
    – Igor Brejc
    Commented Jan 27, 2012 at 21:10

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Probably not. QGIS and uDig can handle spatial data in many formats, such as shapefiles, geo-referenced rasters etc as well as PostGIS databases. You could use QGIS and save your road network as a shapefile, for example. But OSM tools are designed for map editing and do a damn fine job!

I'd stick with that, and use QGIS for more general mapping and GIS tasks if you need to do them.

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