[Imports] [Talk-us] Importing Virginia road centerlines

Steven Johnson sejohnson8 at gmail.com
Tue Feb 22 01:25:07 UTC 2011


Josh,
I like Katie's idea of breaking the data up into manageable chunks
(counties?) and importing in incrementally. I'd be interested in helping
with a few chunks. I'm in Arlington, too. Perhaps we'll meet at a DC area
event?
SEJ
----
"A serious and good philosophical work could be written consisting entirely
of jokes." -Ludwig Wittgenstein



On Mon, Feb 21, 2011 at 17:13, Kate Chapman <kate at maploser.com> wrote:

> Hi Josh,
>
> I've done a couple imports with varying levels of success.  I live in
> Virginia (in Arlington) and would like to help.
>
> -Kate
>
> On Mon, Feb 21, 2011 at 12:40 PM, Josh Doe <josh at joshdoe.com> wrote:
> > I absolutely agree about preserving user contributions. For any given
> > segment in the Virginia RCL Shapefile, there are any number of ways in
> > OSM that make up that segment, with varying attributes. The reverse is
> > possible as well. Merging this won't be easy by any means. However
> > there's no reason we couldn't start importing (sooner) in areas that
> > haven't been edited since the TIGER import
> >
> > As for RoadMatcher, though I haven't played with it yet, I don't see
> > how OSM attributes are lost, it's just that you have to map from
> > OSM->Shapefile->OSM.
> >
> > Remember, I'm just broadcasting my interest, I have a lot of learning to
> do.
> >
> > Regards,
> > -Josh
> >
> > On Mon, Feb 21, 2011 at 12:01 PM, Mike N <niceman at att.net> wrote:
> >>> I'm totally new to importing, so I first wanted to see if anyone else
> >>> is interested in this project, though I am willing to take the time to
> >>> learn the process myself. Is the process used for importing the
> >>> Canadian database [1] the best method for doing this?
> >>
> >>  The process for the Canadian database is best used only for adding new
> >> roads that don't exist in the OSM database.  As part of the upload
> process,
> >> plan on stitching them into existing roads, perhaps using JOSM.
> >>
> >>  It would also be handy to be able to project the improved geometry onto
> >> existing roads of the same name, while preserving attributes and
> driveway /
> >> footpath / bridges that have already been added to the OSM data.    That
> >> will preserve user's contributions and history.  This would require some
> >> new, yet-to-be developed tool to work directly with OSM data.  There is
> much
> >> interest in this because of the TIGER 2010 data and Arkansas state data
> >> sets.   It is not certain when there will be developer resources to
> develop
> >> such a tool.
> >>
> >>  The limitation of Roadmatcher is that it works only with shapefiles,
> thus
> >> OSM attributes are lost when exporting to shapefiles.
> >>
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> >>
> >
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