[Talk-us] Counties Data Import

Ian Dees ian.dees at gmail.com
Fri May 9 19:22:19 BST 2008


Matt,

My plan was to split it into subbasins and go from there. The problem is
that I can't seem to find any keys that would allow me to easily pull the
data apart based on those.

I'm talking with the NHD GIS folks right now to get their input.

-Ian

On Fri, May 9, 2008 at 12:05 PM, Matthew Perry <perrygeo at gmail.com> wrote:

> Ian,
>
>  You might want to consider breaking it up into more "natural"
> sections based on the sub-basin ID. This would keep contiguous
> drainage basins intact and would not require any additional clipping
> since the subbasin id is included in the attributes of the NHD lines.
> Water does not respect political boundaries and I don't see any real
> reason to process the data as if it did.
>
> - matt
>
> On Fri, May 9, 2008 at 7:41 AM, Ian Dees <ian.dees at gmail.com> wrote:
> > Hi everyone,
> >
> > While I was trying to figure out how to divide the massive NHD dataset
> into
> > more management pieces, I found a county boundary dataset and converted
> it
> > to OSM.
> >
> > I uploaded Wisconsin and Minnesota county boundaries and submit them for
> > your review. One minor issue:
> >
> > http://tah.openstreetmap.org/Browse/?x=1036&y=1489&z=12&layer=tile
> > ... shows that each county is a separate, closed way in OSM. This means
> that
> > at most boundaries, the dashed lines that are used to render political
> > boundaries are overlapping and look odd. I can't see a way around this
> > without losing metadata.
> >
> > If you have any opinion on how this data is represented, please let me
> know.
> > Otherwise, I will upload the rest of the country later on this weekend.
> >
> > _______________________________________________
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> > Talk-us at openstreetmap.org
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> >
> >
>
>
>
> --
> ·´¯`·.¸. , . .·´¯`·.. ><((((º>`·.¸¸.·´¯`·.¸.·´¯`·...¸><((((º>
> Matthew T. Perry
> http://www.perrygeo.net
>
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