[Talk-us] Tiger 2007 data

[80n]

On Sat, Oct 25, 2008 at 12:37 AM, Nick Hocking <nick.hocking at gmail.com>wrote:

> "Again, let's calm down a little bit.  Were you around for the last
> import?  Did you see how I handled data conflicts in that one?  Was
> there a problem there that needs fixing this time around?"
>
> Yes I think there were problems.  There have been some diary entries
> bemoaning the fact that their edits had been blown away by the Tiger data
> upload.
>
> From my own experience I noticed some problems as well.  My travels took me
> through my second most favourite place on earth - Death Valley.  When I went
> to edit in the tracks I noticed that on Badwater road there were two roads
> (and still are).
>
> One edited in by 80n and another uploaded Tiger one and both intertwined.
> Since then another mapper has made some improvements to the Tiger one
> although he has not yet removed the reviewed tag. I've also been slack in
> this respect but am in the process of fixing this.
>
> More serious is the situation of Golden Canyon Road.  I walked up this
> washway a small way (as you can see from my gps tracks) but didn't want to
> repeat the fatal decision of a German Tourist so I quickly went back to the
> car. This was in mid summer.
>
> Google Earth readily shows the correct nature of the car park area  and
> washway status.
>
> 80n has this tagged correctly as "footway" but Tiger declares it highway,
> residential, a most incorrect tagging, and dangerous as well.
> Needless to say these two ways are intertwined as well.  I haven't looked
> up the edit dates but I'll take a bet that 80n didn't edit in this footway
> and not realise that there was an incorrect residential way already mapped.
> I had already fixed up the other end of this track (at Zabriski Point) but
> had put the whole area in the too hard basket and decided that when I
> finally get my tracks all edited in, I would attempt to fix up Death Valley.
>

My work in Death Valley pre-dates the TIGER import by a long way.  Golden
Canyon is really really not a residential road.

We didn't have the highway=road tag back when the original TIGER import was
done, but I see many roads in the US tagged as residential that are anything
from a freeway to a dirt track and most things inbetween.  Perhaps, if any
tiger data is re-imported a lot of the roads tagged as highway=residential
should be replaced by highway=road, particularly outside large urban areas.
This would at least make it easier to see what does or doesn't get touched
afterwards.






>
> I had also noticed problems in San Francisco, where there were two Lombard
> Streets on top of each other, one with the squiggly bit straight.
> Fortunately someone has corrected this.
> On a side note, I believe that the correct thing to do is to just delete
> the "Tiger reviewed" tag rather than turn it to "yes".
> Is this correct?
>
> I'm firmly convinced that automatic uploads should only go into areas where
> there are NO user edited nodes or ways. Other updates need to be done
> manully to avoid data corruption.
>
> Cheers
> Nick
>
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