On Wed, 2 Sep 2009, Ed Avis wrote: > Another person on this list mentioned that he didn't think of tagging > traces with the mode of transport used. There's no prompt for it when you > upload a file, and so most people don't. So I drive somewhere, walk a bit to get some details, unload the bike, cycle some, drive home and now you think that I am going to split a trace into what I was doing where? If I'm solo driving I stop and start on lonely roads to get all the markers, get out of the car to photograph stuff, with the gps unit now attached to the camera, so it can be used for better geo-tagging what information will you get from this trace on the average speed? and how will this info relate to the average speed of a person on a normal trip? I ask this because you are thinking about collecting information and you aren't thinking about the relevance of the gathered information to the intended use of this information. It is poor planning to collect information without working out for what you are going to use this information. You cannot assume that the information is going to be relevant. Neither random nor compulsive information gathering are going to add value to the data.
> Similarly, I never thought until > now of adding the model of GPS I used, until by chance someone happened to > mention it on the mailing list. And even now that I know I should add it, > it's far from obvious how to do so. If there were a simple text box > labelled 'GPS unit used' then I would have filled it out on every trace > uploaded, and so, I assume, would hundreds of others. While the average OSMer has one GPS, I confess to owning 3, and having had a number of others pass through my hands, all of which I have used and tested before sending elsewhere in the world. No, I am not going to add in which GPS unit I used. I use them as most suited to me on the day - availability of bike mount, accuracy, whether it takes standard batteries or needs a fancy recharger - and by the time I sort out my traces and photos I may no longer know which GPS I used. And what will this add to the data?? Zilch (although I actually mean another Oz phrase, which would be offensive in print for most). _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
