Hi everyone.
At the time OpenStreetMap imported the US Census TIGER map data, the Census
was in the middle of their "Accuracy Improvement Program" that greatly
improved the alignment of TIGER features in many areas for the 2010 census.
Many of the TIGER corrections have since also been applied to
ating unchanged TIGER imports to TIGER 2013
The code I've been writing to generate the XML for these changes, mostly
only tested so far on a few Indiana counties, is at
https://github.com/ericfischer/osm-tiger-update A rendering of what the
changes look like in those counties
ilto:e...@pobox.com]
> *Sent:* Monday, March 11, 2013 7:11 PM
> *To:* talk-us@openstreetmap.org
> *Cc:* Michal Migurski; Alex Barth
> *Subject:* [Talk-us] Updating unchanged TIGER imports to TIGER 2013
>
> ** **
>
> The code I've been writing to generate the XML for th
On 3/11/2013 10:10 PM, Eric Fischer wrote:
I would like to update OpenStreetMap with as many of the corrections
that have been made to TIGER as can be applied to Open StreetMap without
altering anything that has been edited directly in OSM.
Thanks for coming up with this; I've been hoping fo
On 3/12/13 5:00 PM, Mike N wrote:
On 3/11/2013 10:10 PM, Eric Fischer wrote:
The results of application will depend on both the original data and
the 2012 data. For layouts with 'regular geometry' - roughly square,
rectangular, or rhomboid layouts, the results will be generally good.
For c
Thanks for the helpful comments. At least anecdotally, I think I have
actually seen the TIGER merge lead to more anomalies in gridded areas than
in hills, maybe because people feel more comfortable making minor edits to
mostly-regular grids.
I completely agree that any new ways imported from TIGER
On 3/12/13 9:32 PM, Eric Fischer wrote:
Thanks for the helpful comments. At least anecdotally, I think I have
actually seen the TIGER merge lead to more anomalies in gridded areas than
in hills, maybe because people feel more comfortable making minor edits to
mostly-regular grids.
I completely a
That sounds like a good idea to me. I want to be careful not to break
anything.
Eric
On Tue, Mar 12, 2013 at 6:34 PM, Richard Welty wrote:
> On 3/12/13 9:32 PM, Eric Fischer wrote:
>
>> Thanks for the helpful comments. At least anecdotally, I think I have
>> actually seen the TIGER merge lead to
If anyone is interested in a progress report: I've been doing a lot more
work on this in github to incorporate feedback that people have provided
on- and off-list and to improve robustness, and I think it is pretty close
to being usable.
I haven't found a completely satisfactory way to handle the
On 3/15/2013 8:03 PM, Eric Fischer wrote:
The other thing that has come up is that there are a lot of TIGER edges
that do not correspond to OSM ways in either their old or new version.
In Indiana most of these seem to be linear water. Were these
intentionally excluded from OSM? Or would it be use
> The other thing that has come up is that there are a lot of TIGER edges that
do not correspond to OSM ways in either their old or new version In Indiana
most of these seem to be linear water. Were these intentionally excluded
from OSM? Or would it be useful to try to pick them up as part of the
Thanks for the background. I'll skip over the TIGER hydrography, then, but
it's surprising that so much more of the NHD data is in OSM in some states
than in others.
Eric
On Sat, Mar 16, 2013 at 10:37 AM, Michael Patrick wrote:
> > The other thing that has come up is that there are a lot of TIGE
Eric Fischer writes:
> Thanks for the background. I'll skip over the TIGER hydrography, then, but
> it's surprising that so much more of the NHD data is in OSM in some states
> than in others.
I'm surprised by how bad the NHD data is. I downloaded some of it in
.OSM format, and my casual hand d
On 3/16/2013 5:06 PM, Russ Nelson wrote:
I'm surprised by how bad the NHD data is. I downloaded some of it in
.OSM format, and my casual hand digitization off Bing maps is much
better. If I say so myself, which I do.
That's not surprising if they last updated the NHD data between 1990
and 200
Eric,
I'm in general favor of your idea. I think that if we can get more
accurate, up to date data out of TIGER, then we should.
I'd strongly encourage you to join us on the OSM US Import Committee list:
http://lists.openstreetmap.org/listinfo/imports-us
- Serge
On 3/16/13 7:59 PM, Serge Wroclawski wrote:
> Eric,
>
> I'm in general favor of your idea. I think that if we can get more
> accurate, up to date data out of TIGER, then we should.
>
> I'd strongly encourage you to join us on the OSM US Import Committee list:
> http://lists.openstreetmap.org/listin
Thanks. I just joined the list and will send a message there.
Eric
On Sat, Mar 16, 2013 at 4:59 PM, Serge Wroclawski wrote:
> Eric,
>
> I'm in general favor of your idea. I think that if we can get more
> accurate, up to date data out of TIGER, then we should.
>
> I'd strongly encourage you to
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