Scott Atwood wrote:
On Mon, Dec 7, 2009 at 4:01 PM, Apollinaris Schoell <[email protected]>
wrote:
Scott Atwood wrote:
Finally, the source field references http://www.nationalatlas.gov/,
but all the import mapped data fields are prefixed with "massgis:",
which seems quite odd, since this data should have nothing to do with
MassGIS.
this data isn't good enough for an import. resolution is very crude and
contains many errors
So the National Atlas data has been previously evaluated and
found to be of poor quality?
I have done some checks in california where much better data is
available. Unfortnately the better data isn't yet available for import.
but it clearly shows how bad it is.
It looks like these boundaries were imported by user "John
Serafin" in April 2009. I tried contacting this user via the OSM
messaging system, but I got no response. I looked at the Import
Catalogue on the OSM wiki, and I couldn't find anything obvious that
corresponds to these imports.
Does anyone have any idea what the best way to get these
boundaries fixed up? Should they be deleted and reimported?
If you have any better data, delete and import the better one
I did a quick web search and found that the US National Park
Service maintains a website with a large collection of GIS data,
including park boundaries and campgrounds:
How do people go about evaluating the quality of data that is
being considered for import? I'm not sure there is a better source for
US National Park boundaries than the NPS itself. It's not like it's
possible to survey the boundaries by observations on the ground. The
only way I was able to even determine that the previous import was
problematic is that places I knew to be just inside the park boundaries
appeared just outside the imported park boundaries.
this data isn't much better either. It may be good for some parks. if
you can verify the data is good then import.
--
Scott Atwood
The hill isn't in the way, it is the way.
|
_______________________________________________
Imports mailing list
[email protected]
http://lists.openstreetmap.org/listinfo/imports
