Bonjour, I agree with Sam, no easy way to do the job in Josm :-(
However, I previously wrote ([Talk-ca] Canvec.osm Future): "Canvec and Openstreetmap data will be compared to find differences between them [... Snip ...] future versions of Canvec, including Omission and Commission files, will be made available for Osm community." This means NRCan has a process that do it for roads. We will start to compare datasets this fall. The differences found will be made available on the ftp site as - Commission files (what is in Canvec but not in OSM); - Omission files (what is in Osm but not in Canvec); This process will be much longer that the current conversion process !-) We will start with few provinces - roads only. If it goes right, we will expand it to all provinces and themes. I will keep you informed Daniel -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Sam Vekemans Sent: 6 juillet 2010 21:08 To: G. Michael Carter; Talk-CA OpenStreetMap Subject: Re: [Talk-ca] JOSM Difference? Nope :) Painfull copy/paste. And hide/show canvec.osm layer to see whats missing. I just work in a small corner of the tile and work my way around, deleting the copied in features from the canvec.osm file as i go, and save this 'smaller version' locally on my computer as a working copy. The Validator Plugin also helps, Sam On 7/6/10, G. Michael Carter <[email protected]> wrote: > Is there any way to apply a minus on the OSM files? ie: Select a > CanVec grid, and open in JOSM. Then click a download button and it > removes any object which are identical? > > > > > _______________________________________________ > Talk-ca mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk-ca > -- Twitter: @Acrosscanada Blogs: http://acrosscanadatrails.posterous.com/ http://Acrosscanadatrails.blogspot.com Facebook: http://www.facebook.com/sam.vekemans Skype: samvekemans IRC: irc://irc.oftc.net #osm-ca Canadian OSM channel (an open chat room) @Acrosscanadatrails _______________________________________________ Talk-ca mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-ca _______________________________________________ Talk-ca mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-ca

