[GRASSLIST:4838] Re: trouble with v.proj

bfdi533 bfdi533 at cbacc-security3.bus.utexas.edu
Mon Nov 15 12:01:31 EST 2004


On Thu, 2004-11-11 at 14:23, Paul Kelly wrote:
> Your second location has no datum information. I presume it is not in 
> wgs84 thus you need to specify a datum or the transformation will not
be 
> accurate. If it is in NAD27, you could just add the line
> nadgrids: conus
> to the PROJ_INFO file and try again.

I had not noticed that but when I setup of the location I entered the
following:

projection: stp
ellipsoid: grs80
datum: nad83
state FIPS code: 48
county FIPS code: 453
and then entered the default window


Hmmm... Maybe there was a problem there as when I recreate the location
it says:

-----------------------------------------------------------
PROJ_INFO file:
name:    State Plane
datum:   nad83
dx:      0.000000
dy:      0.000000
dz:      0.000000
proj:    lcc
a:       0.63782064e+07
es:      0.6768657997291094e-02
x_0:     0.6096012192024384e+06
y_0:     0
lon_0:   100d20'w
lat_0:   29d40'n
lat_1:   31d53'n
lat_2:   30d7'n
-----------------------------------------------------------
PROJ_UNITS file:
unit:    meter
units:   meters
meters:  1.0
-----------------------------------------------------------


Gonna try that v.proj again and see what happens.

Ed



> On Thu, 11 Nov 2004, bfdi533 wrote:
> 
> > -----------------------------------------------------------
> > PROJ_INFO file:
> > name:    State Plane
> > proj:    lcc
> > a:       0.63782064e+07
> > es:      0.6768657997291094e-02
> > x_0:     0.6096012192024384e+06
> > y_0:     0
> > lon_0:   100d20'w
> > lat_0:   29d40'n
> > lat_1:   31d53'n
> > lat_2:   30d7'n
> > -----------------------------------------------------------
> > PROJ_UNITS file:
> > unit:    meter
> > units:   meters
> > meters:  1.0
> > -----------------------------------------------------------




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