[GRASSLIST:696] Re: d.measure units

Tom Russo russo at bogodyn.org
Thu Apr 13 01:36:22 EDT 2006


On Wed, Apr 12, 2006 at 11:16:49PM -0600, we recorded a bogon-computron collision of the <russo at bogodyn.org> flavor, containing:
> The manual for d.measure says that it outputs distances in the units of the
> current location, but as far as I can tell it only outputs in meters.
> 
> I'm using grass 6.1cvs, updated a few days ago.  My location was created
> by importing a shapefile with v.in.ogr and the "location=" flag.  My shapefile
> came from a county GIS department, and had the following prj file:
> 
> PROJCS["NAD_1983_HARN_StatePlane_New_Mexico_Central_FIPS_3002_Feet",
>   GEOGCS["GCS_North_American_1983_HARN",
>      DATUM["D_North_American_1983_HARN",
>        SPHEROID["GRS_1980",6378137.0,298.257222101]],
>      PRIMEM["Greenwich",0.0],
>      UNIT["Degree",0.0174532925199433]],
>   PROJECTION["Transverse_Mercator"],
>   PARAMETER["False_Easting",1640416.666666667],
>   PARAMETER["False_Northing",0.0],
>   PARAMETER["Central_Meridian",-106.25],
>   PARAMETER["Scale_Factor",0.9999],
>   PARAMETER["Latitude_Of_Origin",31.0],
>   UNIT["Foot_US",0.3048006096012192]]

Interestingly, when I run gis.m and use its measure tool instead of using
d.measure from the command line, it reports distances in US Feet just as I'd
expected d.measure to do.

-- 
Tom Russo    KM5VY     SAR502  DM64ux         http://www.swcp.com/~russo/
Tijeras, NM  QRPL#1592 K2#398  SOC#236 AHTB#1 
"And, isn't sanity really just a one-trick pony anyway? I mean all you get is
 one trick, rational thinking, but when you're good and crazy, oooh, oooh,
 oooh, the sky is the limit!"  --- The Tick




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