----------------------------Original message----------------------------
>Date: Tue, 19 Jul 1994 09:01:35 EDT
>From: Roger Edgecombe <[log in to unmask]>
>Subject: Algorithms for lat/long conversion to a mapping grid
>To: Multiple recipients of list MAPS-L <[log in to unmask]>
>
>----------------------------Original message----------------------------
>Anybody please:
>
>I'm interested in converting lat/long readings (from a GPS) on to a
>mapping grid. Could anyone point me at a source of the necessary
>algorithms. Thanks in advance.
>
>Roger Edgecombe
I presume that lat/lon to mapping grid conversion is the request.
In terms of algorithms, the question is do you want mathematical
definitions, computer language source code or a program that will
perform the transformations?
For description of many projections, the best source is:
"Map Projections---A Working Manual" by John P. Snyder
USGS Prof. paper 1395
For C source code for over 100 projections as well as application
programs:
ftp charon.er.usgs.gov (128.128.40.24) in directory pub/PROJ.4
check README for details.
Gerald (Jerry) I. Evenden Internet: [log in to unmask]
voice: (508)563-6766 Postal: P.O. Box 1027
fax: (508)457-2310 N.Falmouth, MA 02556-1027