On Thu, 24 Sep 2009, John Smith wrote: > > If you think in the Venn diagram > > source=survey is a big box > > source=gps is a subset of that box > > and then some other subsets of gps would be needed > > GPS on it's own isn't more meaningful either, not without knowing the > hardware used, since most surveys will be using consumer grade GPS > anyway. ideas for subsets gps_chip=antaris/sirfstar3/mediatek/trimble/ gps_model= hdop= pdop= (precision would be some rough figure for the track, i wouldn't want to see them on each single node)
then we could note if additional survey techniques used like differential_gps=yes (default=no) and (cheating off an unpublished essay) we could discuss if an improved antenna was used and what algorithms are used by the GPS chip to improve results -- If you stand on your head, you will get footprints in your hair. _______________________________________________ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
