[talk-ph] sanity check for maintaining GPS tracks
I have hundreds of GPS tracks. Some are uploaded in OSM, some I forgot to upload. Some are clean, some are dirty, some are squiggly and some are a big cloud of points pointing to my house. Any advice on how to maintain/clean the tracks before uploading? -- cheers, maning -- Freedom is still the most radical idea of all -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ -- ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph
[talk-ph] POI mapping for really non-mapping people
I was asked to do some mapping workshop for a bunch of really non-mapping people. What they want is to map some cultural POIs within their city and produce a big paper map out of it. Of course, I can teach them some FOSS GIS incantations, but that would make the 2-3 hour long workshop over-complicated. OSM comes to mind, not only they can use our data as a basemap, they can even improve the data by adding more POIs. Ergo, I need your advice. Basic workshop goal is to teach them some neogeography [1] ninja moves to make a simple webmap of cultural artifacts within their city. I need some purely online tools on the following: basemap editing - OSM and potlatch geocoding photos - flickr and its geocoding tool creating KML points purely on the webpage using osm map- no idea how creating the webmap with points KML overlay - openlayers or geocommons print the big map including the POI overlays [1] http://en.wikipedia.org/wiki/Neogeography -- cheers, maning -- Freedom is still the most radical idea of all -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ -- ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph
Re: [talk-ph] sanity check for maintaining GPS tracks
Hi, For the cleaning part, I use GPSBabel to: 1. remove low hdop/vdop (and low satellites) points 2. remove close points (1m) due to traffic-lights, parking-pauses to reduce overall file-size. 3. remove areas I often go or park to avoid clouds. (this first needs transformation to wpt, then back to trk after filtering) 4. convert raw nmea to gpx This is the script I use ($1 is input file, $2 is output file): gpsbabel -i nmea -f $1 -x discard,hdop=2,vdop=3,sat=4 -x position,distance=1m -x transform,wpt=trk,del -x polygon,exclude,file=area.loc -x transform,trk=wpt,del -o gpx -F $2 where area.loc is an exclusion polygon file containing for instance: #mepz 10.327382 123.97915 10.328248 123.97975 10.329328 123.98076 10.330446 123.98000 10.327611 123.97688 10.327382 123.97915 Regards, Totor --- On Tue, 4/13/10, maning sambale wrote: From: maning sambale Subject: [talk-ph] sanity check for maintaining GPS tracks To: osm-ph , osm-talk Date: Tuesday, April 13, 2010, 9:50 AM I have hundreds of GPS tracks. Some are uploaded in OSM, some I forgot to upload. Some are clean, some are dirty, some are squiggly and some are a big cloud of points pointing to my house. Any advice on how to maintain/clean the tracks before uploading? -- cheers, maning ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph
Re: [talk-ph] sanity check for maintaining GPS tracks
Totor wrote, On Tuesday, 13 April, 2010 08:23 PM: This is the script I use ($1 is input file, $2 is output file): gpsbabel -i nmea -f $1 -x discard,hdop=2,vdop=3,sat=4 -x position,distance=1m -x transform,wpt=trk,del -x polygon,exclude,file=area.loc -x transform,trk=wpt,del -o gpx -F $2 This is brilliant. Thanks for sharing. I had no idea gpsbabel could do that! Jim -- datalude: information security e: j...@datalude.com Philippines: +63 2 403 1311 / mob: +63 920 912 5830 Hong Kong: +852 6840 6693 w: http://www.datalude.com/ ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph
Re: [talk-ph] sanity check for maintaining GPS tracks
On a slightly related note ... I just went to the gpsbabel home page and looked at the features on the new beta release. Apparently it now supports the Locosys GT-31 ( the GPStoGo model), which it didn't when I used it last May. Just thought I'd pass that on. Jim -- datalude: information security e: j...@datalude.com Philippines: +63 2 403 1311 / mob: +63 920 912 5830 Hong Kong: +852 6840 6693 w: http://www.datalude.com/ ___ talk-ph mailing list talk-ph@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ph
