OpenStreetMap

Wierd looking streets, what to do?

Posted by leuty on 23 January 2013 in English (English)

Hi Community

While fixing connectivity errors using maproulette (its fun btw.) I found the following location in Medicine Hat, CA.

http://www.openstreetmap.org/?lat=50.06165&lon=-110.69818&zoom=16&layers=M

The streets mapped by user Yorii are done very strange (not connected, messed up connection of other roads). IMHO this seems a bit like someone was toying around with an editor (if not I apologize in advance). I can't find these roads on Bing either. It could very well be that they were added after Bing img was taken. It is hard for me to verify this form my armchair in Europe.

Is there newer Imaginary available for this region? Or is anybody living there who could go out and verify their existence?

Thanks and again. Sorry if I make false acquisitions, this is not my intention.

Comment from Vclaw on 24 January 2013 at 12:33

Send a polite message to that user, asking what they are doing, and what sources they are using. And explain that OSM is a map of the real world, and that they shouldn't be adding things which don't exist.

Though it looks like they haven't edited in over a year, so you might not get any reply.

You could ask on the Talk-US mailing list, to see if there's anyone familiar with the area.

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Comment from Nakaner on 24 January 2013 at 16:51

If you use JOSM and want to know how old the Bing images are, you just click right on the Bing images (in the center of the JOSM window, not in the layer switcher) and choose "Show Tile Info".

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Comment from leuty on 24 January 2013 at 23:20

Thank you for the suggestions. I wrote to the user and I will check on the age of the images tomorrow.

How can I get the date when a particular node was added within JOSM?

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Comment from BCNorwich on 25 January 2013 at 08:07

Hi leuty, Hi-light/select the particular node, choose the VIEW menu then click HISTORY or ADVANCED INFO.
Regards Bernard

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Comment from zmonkey on 25 January 2013 at 09:43

It may be they were an inexperienced editor.

Also, looks like the redact bot hit a few streets.

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Comment from leuty on 25 January 2013 at 12:40

Thank you for your help.

The Bing imagery was taken on 2010-06-23 and Yorii added the streets on 2011-07-15, so it could very well be than these streets were built between these two dates. I'll have to investigate further and ask on mailing-lists if someone has imagery or lives around there.

Cheers, Leuty

PS: source=* tags ftw!

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Comment from Dr Kludge on 26 January 2013 at 15:44

This way in change set says "build = 2.2-18-g514f0d2 created_by = Potlatch 2 version = 2.2". I've cleaned us similar problems in the metro Phoenix area using the great Keepright tool. Gasp! Some of those were created by me as an early mapper. I now use the JOSM grid of ways plug-in to create a network of ways as was attempted in the way above from your example area. I also select an intersection and use j then m Josm commands in sequence to make sure that ways are connected.

The overlapping long looping ways from your example, connectivity issues, and the like tend to originate from Potlatch based on my observations. However, anyone of any level of experience will make mistakes. What is nice about OSM are the number of tools to help find and correct these problems. The challenge is to help encourage and develop new mapping talent. The way I have been discussing from your example is still a very valuable contribution that filled up a blank spot on the map!

Regards, Greg

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Comment from leuty on 26 January 2013 at 16:57

Dear Greg

"However, anyone of any level of experience will make mistakes."

Yes, that is true and I do not exclude myself from it. I introduced a ton of mistakes while mapping myself.

Indeed Keepright is a very valuable tool to fix stuff as connectivity errors. However, I think that sometimes it is better to just leave an obvious error as it is rather than correcting it the wrong way (for instance if no visual reference is available). I think that is true for the case I describe here and that is why I ask for more info.

Thank you for your comment.

Leuty

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Comment from leuty on 27 January 2013 at 13:25

The particular user has been reported to vandalize in other areas as well. Consequently, I removed his contributions in the Medicine Hat, CA area in changeset: 14807402.

Have a good week anyone and happy mapping.

Regards, Leuty

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