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

Antony Pegg antthelimey at gmail.com
Fri Oct 22 01:16:32 BST 2010


Hah! Yeah I've been doing the exact same thing for our Lancaster pa
mapping group.

We'll look at it tomorrow and find out what's going on. Fwiw I meant
server tilecache, not browser cache. Thanks for finding it and letting
us know

On Thursday, October 21, 2010, Toby Murray <toby.murray at gmail.com> wrote:
> Hmm well there is definitely something stuck on your end for zoom
> levels 8 and 9. I'm on a different computer with two different
> browsers now so client side caching can't explain it. Look at Kansas
> City (only the KS side) Wichita, Omaha, Oklahoma City and Denver. They
> are all bright green blobs at z8-9 but all change to mostly red at
> z10+
>
> I'll be honest... I was kind of hoping to stroke my ego by zooming out
> and then being like "oh look! The only green blob within two hundred
> miles is MY city!" but alas at those zoom levels all of the major
> cities in my area are (incorrectly) green  :)
>
> Toby
>
>
> On Thu, Oct 21, 2010 at 5:53 PM, Antony Pegg <antthelimey at gmail.com> wrote:
>> 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
>>>
>>
>



More information about the talk mailing list