-------- Original Message --------
Subject: Re: Software for determining old map projections
Date: Thu, 07 Nov 2013 07:59:51 -0500
From: Joel Kovarsky <[log in to unmask]>
To: Maps, Air Photo, GIS Forum - Map Librarianship <[log in to unmask]>


David,

This is not a direct answer, but if you do not get one I would consider contacting the people involved with MapAnalyst (http://mapanalyst.org/index.html ; particularly Bernhard Jenny) and also Joaquim Alves Gaspar (http://lisboa.academia.edu/JoaquimGaspar ; can be done via MapHist Forum). You may have already done this.

     Joel Kovarsky

On 11/7/13, 7:42 AM, Angie Cope, American Geographical Society Library, UW Milwaukee wrote:
[log in to unmask]" type="cite">
-------- Original Message --------
Subject: Software for determining old map projections
Date: Wed, 6 Nov 2013 16:28:49 -0500 (EST)
From: David Allen <[log in to unmask]>
To: [log in to unmask]




I am studying some early nineteenth century maps by Aaron Arrowsmith that show projection grids (graticules), but do not state what projection was used.  I was wondering if someone has developed software to ascertain map projections based on the lines of the grid.  I would think that it would be fairly easy to develop something like this, but have not been able to turn up anything via Google.  Any leads?

David Allen
(Stony Brook University, Emeritus)


--
Joel Kovarsky
The Prime Meridian
1839 Clay Drive
Crozet, VA 22932 USA
http://www.theprimemeridian.com