[Talk-us] [Imports] Uploads to City of Salisbury, MD

Nick Chamberlain nchamberlain at ci.salisbury.md.us
Thu Mar 22 13:12:31 GMT 2012


Josh and Marc,

Thank you!  I apologize that I'm unable to speak the OSM language as
well as everyone, I'm working on it :)  I posted on the Salisbury,
Maryland Import page that Josh created to give more detail about my
uploads.

I didn't really think that I created so many duplicates, because I did a
lot of things in JOSM before I actually chose to upload.  One thing I
know for sure is that I didn't I upload until I was actually able to - I
was getting a proxy error and the uploads were timing out when I
attempted to upload the entire batch.  I assumed that these attempts
were unsuccessful, which I might be wrong about and might have resulted
in duplication.

I assumed that my successful attempts started, maybe @ 10901673, when I
realized I needed to break the original shapefile up tabularly into
percentiles and upload 10 segments of the building footprint dataset,
one after the other.  These were all definitely successful, and were
only done once per percentile.

Josh, where are you finding the list of changesets in the format you
posted?  I can only figure out how to list them in my editor profile
with my comments.

If you believe that the method you mention that removes the 71,000 nodes
is the best approach, please feel free to do so.  I will also gladly
manually fix the inner ring tagging issue as the data gets fixed.
Please let me know what I can do to help.  I am also willing to share
the .osm files and/or shapefiles if that will help.  Thanks.

- Nick

-----Original Message-----
From: joshthephysicist at gmail.com [mailto:joshthephysicist at gmail.com] On
Behalf Of Josh Doe
Sent: Thursday, March 22, 2012 8:51 AM
To: Marc Zoss
Cc: imports at openstreetmap.org; talk-us at openstreetmap.org; Nick
Chamberlain
Subject: Re: [Imports] [Talk-us] Uploads to City of Salisbury, MD

On Thu, Mar 22, 2012 at 8:04 AM, Marc Zoss <marczoss at gmail.com> wrote:
> I briefly downloaded all sby:bldgtype-tagged ways and relation of
Maryland through the overpass-api. Then removed the ones having only a
sby:bldgtype tag, run the validator and deleted the duplicated nodes and
ways.
> This would result in a changeset to remove the roughly 71'000
duplicates nodes and ways.
>
> If the area was edited since the import and reverting gets tricky,
this might be the option to go, at least the result looks ok at the
first glance.
>
> Please also note that the conversion step seems to add a building=yes
tag on on inner ring of building polygons () which is certainly bad
tagging, despite the correct rendering (52 occurrences, so could be
fixed manually).

Thanks for doing that, as that was the next step I was going to try. I
posted some regarding the changesets here:
http://wiki.openstreetmap.org/wiki/User_talk:Nick_SPW#Salisbury.2C_Maryl
and_import

I think perhaps we should revert a subset of the changesets, such as the
dangling nodes, and then use your method to handle the rest.

-Josh



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