PROJ.4

GRASS GRASS user
1

From: KLENKUS1@VAXC.STEVENS-TECH.EDU
Date: Thu, 02 Jun 1994 16:56:28 -0400 (EDT)
Subject: PROJ.4
To: grassu-list@max.cecer.army.mil

HELP!!!!

Im trying to convert from UTM to State Planer for NJ.

For zones:
  utm zone = 18
  NJ zone = 2900

Unfortunately, Im getting an error when converting from
UTM to Lat/LONG because the * symbol appears.

proj +proj=utm +zone=18 +inv

What release are you using? Just type proj to find out.
The +inv relates to defunct rel 3.

For a point in Newark (-74d10 40d44):

proj +proj=utm +zone=18 +ellps=clrk66 -I -o <<EOF | \
proj +init=nad27:2900 -i +units=us-ft
570368.57 4509277.73
EOF

produces:

2138572.03 692482.49

Nad2nad is a little easier:

nad2nad -i utm=18 -o spcs=2900,feet <<EOF
570368.57 4509277.73
EOF

2138572.03 692482.49

After this I enter the coordinates I recieved from the
reverse direction, and thus an error appears!

Does anyone know of a way to convert from UTM to State
planer without going through Lat/Long? Or can solve my
current problem.

Thanks for any help.

Kym M. Lenkus
Davidson Laboratory

Gerald (Jerry) I. Evenden Internet: gie@charon.er.usgs.gov
voice: (508)563-6766 Postal: P.O. Box 1027
  fax: (508)457-2310 N.Falmouth, MA 02556-1027