Bob Byer wrote:
All,
I work extensively in the state of Delaware and the mapping
information that they provide is based on ESRI ID 102257 with an ESRI
WKT Name of NAD_1983_HARN_StatePlane_Delaware_FIPS_0700. As a new
user of GRASS, what would be the best way to import that data?
Ultimately, I wish to reproject state plane meters to state plane feet
then use those files to import into a MODFLOW project. Perform the
modeling, then export that information back to GRASS for additional
processing.
I see in the EPSG database that NAD_1983_HARN for Delaware with units of
feet is EPSG code 2880:
# NAD83(HARN) / Delaware (ftUS)
<2880> +proj=tmerc +lat_0=38 +lon_0=-75.41666666666667 +k=0.999995
+x_0=200000.0001016002 +y_0=0 +ellps=GRS80 +to_meter=0.3048006096012192
+no_defs
Does that exactly match ESRI's 102257?
And the EPSG code for for the CRS with meter units is 2776, as listed
at the bottom of your website..
So if you create two locations, one based on each of the EPSG codes, you
can then import your data (into the correct location), and reproject to
the other location to get units in meters.
In case there is interest, the web site
http://datamil.delaware.gov/geonetwork/srv/en/datadownload
Thanks in advance,
Bob
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