[OSM-talk] source=(survey, yahoo, gps...)

[John Smith]

2009/9/9 d f <fac63tempt at yahoo.com>:
> Yes I would. In Potlatch if I press G or click the GPS icon it display all
> uploaded traces.

It's a hypothetical and the GPS traces were not uploaded so you
wouldn't be able to download anything.

> I don't. But I take the average of all the traces available. i thought this
> is what we were meant to do!
> I'm sure I read it in the wiki somewhere.

That's assuming there is traces to download.

> It wouldn't! & I never said it would.
> However just because someone tags theirs as being from a certain source
> doesn't make it necessarily more accurate than mine.

If someone traces from low-res sat imagery and I use GPS I'm pretty
sure I know which is better quality data, however if there is no
source tags and the only sat data I have access to is low-res what
else am I supposed to assume?

> If you take your policy I don't understand how anything can be updated once
> it been initially mapped!

It's not a policy, it's a hypothetical situation where you are making
assumptions about the quality of data when you have nothing to base
those assumptions on. If something is tagged yahoo and I do a GPS
trace generally due to sat imagery being mis-aligned the GPS trace is
better.

> I don't see the problem in amending that. Even if there are no other traces
> & irrelevant of the source tag.

The point is, you are making a subjective decision over what you think
is right or not, if source tags were used more you could make
objective decisions based on more information being available to you,
it would be nice to tag things like GPS model, not just that it was
from a GPS, some models are better than others and so on and so forth.