[OSM-talk] MapQuest welcomes Thea Clay and Nominatim, Potlatch2, TIGER Edited Map Viewer go up on Developer Network

Antony Pegg antthelimey at gmail.com
Thu Oct 21 23:53:27 BST 2010


Hi Toby,

Glad you like it.

Ok, tiger tiles are meant to refresh basically every 15 minutes ish
(same as the websites). I got a feeling you got an old cache at the
further out zoom - Andy made a style update that made it more
accurate, so yes trust the red more than the green right now.

Remember I am a product manager, not a developer (so basically I stare
keenly into the middle distance while standing on the shoulders of
giants) but here's how I understand it works:

To make it go green, you need to either change a tag on the way, or
add/remove a node from the way, to cause a way versioning to happen.
If the way has 5 nodes, and you move around the 5 nodes, then it stays
red, because the way version hasn't changed, only the node versions.

Andy's style update made it more accurate, but I haven't had a chance
to find out how yet - only to be happy it happened. Totally my fault,
i plead the rigors of doing two pushes in one week.

HTH and thanks again,
Ant

On Thursday, October 21, 2010, Toby Murray <toby.murray at gmail.com> wrote:
> Wow! This is great stuff!
>
> I do have some questions about the TIGER edited map. For example, go here:
> http://open.mapquestapi.com/tigerviewer/index.html?zoom=9&lat=39.10819&lon=-97.54698&layers=B
>
> Now zoom in one level. Most of the roads change from green to red.
> Unfortunately I am inclined to believe the "more red" version since
> there aren't many mappers in this area, except around Manhattan
> (towards the east) where I am and most of the roads do indeed reflect
> that I have touched them.
>
> From reading the wiki about the original TIGER edited map it would
> seem that only ways that are in version 1 are rendered as red. Is This
> still the case? It looks like there may be some additional logic...
> User balrog-kun did some nationwide edits in April to expand street
> names and remove the tiger:upload_uuid tags from tiger data. It looks
> like these ways are still being rendered as untouched even though the
> tags did change. But this is a good thing :)
>
> Toby
>



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