[Talk-us] bulk upload of data to OSM: roads, water, and orthos
John Callahan
john.callahan at UDel.Edu
Wed Jun 25 17:42:07 BST 2008
The new road dataset was created directly from the local county planning
departments and from our state Dept of Transportation. This includes
spatial line work as well as updated address ranges, postal codes, and
names. The data were then merged together to form a state-wide mosaic
and fit to align with our high resolution 2007 orthophotography, which
it does very well at about 1:1000 and fairly well (line still stays
within street on photo, just not center) down to 1:200 in most areas.
Spatially it's no contest. I've attached just a few simple images to
show what I mean. These show our new dataset in red vs TIGER 2007 in
purple. Remember that the red lines match the hi-res photography.
Attributes are also an improvement for geocoding, routing, and naming.
Attached is a very small extract of the available data fields. I work
closely with our state GIS data providers and users (including county
planning departments, DOT, Dept of Education, Dept of Env Resources,
private consultants, University staff, etc...) and this new dataset is
generally agreed upon as the best option. There was a lot of money paid
to work on this data and create a high-quality dataset. The data I want
to contribute to OSM is the "unrestricted" part of a larger data
collection effort. (I just checked the license agreement and it clearly
states unrestricted rights to geometry and selected attributes (those
attached in dbf file.)
This dataset does not have any POIs. It is simply line work and
attributes for mapping, routing, and geocoding.
Good question about contacting OSM editors of this data. I can easily
contact most of the GIS data professionals and
govt'/consultant/University people who typically with transportation
data. However, that does leave out the single individual, say at home,
who modifies the data. Not sure how often that happens. I can always
keep an copy of the current OSM data before uploading the new data set
and replace parts of needed. Or is there a way to find any edits made
since the intial loading of the TIGER?
- John
Dave Hansen wrote:
> On Wed, 2008-06-25 at 11:00 -0400, John Callahan wrote:
>
>> To answer your question...Yes, our new road dataset is a significant
>> improvement over current TIGER data (which I obtained from
>> http://www.census.gov/geo/www/tiger/tgrshp2007/tgrshp2007.html)
>>
>
> Could you qualify that a bit for us? How much better? In what ways?
>
> Not only do we have the TIGER data itself, we also have the several
> months of work from mappers since the TIGER data was uploaded. What I
> did before uploading the TIGER data, and *especially* before uploading
> over something was check with all the mappers in the area that I could
> find. I showed them the TIGER data versus what they had and let them
> make the choice to either take it or leave it. I think it would be nice
> to do the same for this new data set.
>
> If you see DaveHansen as the author, ignore me. That was all from the
> TIGER upload.
>
> -- Dave
>
>
> _______________________________________________
> Talk-us mailing list
> Talk-us at openstreetmap.org
> http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk-us
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk-us/attachments/20080625/1b164bd8/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: sample.dbf
Type: application/octet-stream
Size: 2670 bytes
Desc: not available
URL: <http://lists.openstreetmap.org/pipermail/talk-us/attachments/20080625/1b164bd8/attachment.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: scene1.png
Type: image/png
Size: 23521 bytes
Desc: not available
URL: <http://lists.openstreetmap.org/pipermail/talk-us/attachments/20080625/1b164bd8/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: scene2.png
Type: image/png
Size: 49115 bytes
Desc: not available
URL: <http://lists.openstreetmap.org/pipermail/talk-us/attachments/20080625/1b164bd8/attachment-0001.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: scene3.png
Type: image/png
Size: 42532 bytes
Desc: not available
URL: <http://lists.openstreetmap.org/pipermail/talk-us/attachments/20080625/1b164bd8/attachment-0002.png>
More information about the Talk-us
mailing list