Moderator Note:  USGS Professional Papers are part of the Government Depository
Program and should be available in most academic libraries.  If you are not
part of the university you should still be able to see the paper, as part of
the GPO depository agreement is that the public can see the government
documents.  If you have access to ILL (interlibrary loan) you sould be able
to get it in three weeks on loan at your library.----------Johnnie
 
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----------------------------Original message----------------------------
>Date:         Tue, 31 Jan 1995 17:06:32 EST
>Reply-To: Maps and Air Photo Systems Forum <[log in to unmask]>
>From: charles gilley <[log in to unmask]>
>Subject:      Content of USGS paper 1395, Map Projections: A Working Manual
>To: Multiple recipients of list MAPS-L <[log in to unmask]>
>
>----------------------------Original message----------------------------
>
>Has anyone ever seen this publication?  The price is $32, but the wait
>is 3 weeks - which makes me hesitant to order.  My current project
>involves plotting vector data in various map projections.  As a result,
>I need this manual to cover some basics, but I also need conversion
>details.  For example:
>
>  Mercatur and Oblique Stereographic.
>  Given an x/y pixel coordinate, convert to long/lat based on current
>  projection mode.  etc.
>
>Does anyone know if this book willhave what I need?  I tried calling the Denver USGS info
>center, but all I could get through to were drones.
>
>Charles Gilley
>AEL/Cross Systems
 
Prof. Paper 1395 is the best source for most common projections and
provides the math to perform the forward and inverse projection operations.
 
If you want C code for these projections, you might want to check
PROJ.4 system on charon.er.usgs.gov (128.128.40.24) in directory
pub/PROJ.4 .  This includes PostScript documentation and covers
over 100 projections (more than PP 1395).  See README for details.
 
IMHO, 3 weeks is pretty good service and often better than what
I have recieved from private publishers.
 
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