[Talk-us] NHD data import question

[Ben Supnik]

Hi Ian,

I should be able to convert the NHD data sometime in the next week or 
so.  Also, if/when you want the original data, let me know.

For the conversion, do we want medium or high resolution?

Re: the import status map, I don't know how to make an actual map from 
them....short of simply providing a KML file and saying "go look on 
Google Earth", what formats are most useful for making an overlay status 
map?  (I could do that conversion and hand it off to someone.)

cheers
ben

On 4/28/11 8:48 AM, Ian Dees wrote:
> Yep: if you have the ability and time to cut the national dataset into
> subbasins I'll give you an SFTP to upload them to and I'll start
> converting them to OSM.
>
>  From there we could add links to the pre-converted subbasin OSM bundles
> to the wiki pages.
>
> Bonus points for converting the subbasin boundary files to
> KML/GeoJSON/GML and overlaying them on a "import status" map that a user
> could click on to find their subbasin. I'd be happy to host all this.
>
> -Ian
>
> On Thu, Apr 28, 2011 at 7:37 AM, Ben Supnik <bsupnik at xsquawkbox.net
> <mailto:bsupnik at xsquawkbox.net>> wrote:
>
>     Hi Y'all,
>
>     So let me see if I can summarize where we are so far...
>
>     - I could cut the NHD data down to sub-basins. It would not be a
>     perfect cutting (e.g. each sub-basin might need a little bit of data
>     "hanging off" since the raw data isn't cut on sub-basin boundaries)
>     but it would be pretty close, and we expect users to manually check
>     their imports.  I could also potentially convert the shapefiles to
>     .osm format on a sub-basin basis.
>
>     - It would be nice to make it easier for users to find their
>     sub-basins.  I'm afraid I don't know how to use the mapnik tool
>     chain to create a slippy map though.  (Left to my own, I would
>     probably convert the sub-basin boundaries to KML...that makes me a
>     heretic, right? :-)  We could also just post the boundary shapefile,
>     but some users may not be comfortable with shapefiles.
>
>     - Importing on a sub-basin basis should be possible in JOSM, if not
>     a bit of a mouthful.  Importing via potlatch2 vector layers should
>     be possible - others have seen this work although I have not.
>
>     cheers
>     Ben
>
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