[OSRS-PROJ] Re: GEOD Quandary

Gerald I. Evenden gevenden at capecod.net
Thu Nov 30 10:48:21 EST 2000

>From below:

geod +ellps=WGS84 +lat_1=45d19'N +lon_1=075d34'W +lat_2=44d15'N
+lon_2=76d34'W +n_S=20 > c:\output.txt

All I can say is: "huh?"  The last I looked, geod does not have "+lat_1=
..." arguments.
All data to be converted are obtained from either sysin or files specified
on the runline!
Secondly, it would appear that the inverse (point to point distance) is
desired but
neither "invgeod" execution name nor -I argument are employed.


geod -I +ellps=WGS84 +n_S=20 >output.txt <<EOF
45d19'N 075d34'W 44d15'N 76d34'W

Note: in Unix execution form.

Jerry Evenden and the Low Riders, Katie and  Daisy May
gevenden at capecod.net  http://www.capecod.net/~gevenden
----- Original Message -----
From: Frank Warmerdam <warmerdam at pobox.com>
To: Alan Ramunas <aramunas at j2geo.ndhq.dnd.ca>
Cc: <osrs-proj at remotesensing.org>
Sent: Wednesday, November 29, 2000 10:28 PM
Subject: [OSRS-PROJ] Re: GEOD Quandary

> > Alan Ramunas wrote:
> >
> > Hi Frank,
> >
> > Paul Morin and I are working on a project for Open Skies (arms control
verification) that requires the interpolation of points along a great circle
> > GEOD seems the ideal application but something about the dos prompt
syntax has me bamboozled. I would very much appreciate any hints you can
provide on this
> > quandary:
> >
> > At the DOS prompt I enter:
> >
> > geod +ellps=WGS84 +lat_1=45d19'N +lon_1=075d34'W +lat_2=44d15'N
+lon_2=76d34'W +n_S=20 > c:\output.txt
> >
> > The output file reads:
> >
> > 45d19'N 0dE
> > 45d6'12.058"N 0dE
> > 44d53'24.086"N 0dE
> > 44d40'36.086"N 0dE
> > 44d27'48.058"N 0dE
> > 44d15'N 0dE
> >
> > I can't seem to get my brain around the reason for all longitudes being
    etc. ...

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