[winGRASS] ps.map unable to find component

[Isaac Ullah]

Hi Marshall,

   I reply to the whole list because the answer to the pq.dll part of your question will be interesting to all, I assume. I had found a workaround for this problem some months ago, and since then, have been contacted by (and replied to) several people who experienced the pq.dll problem. Below is the solution I found to work:

    "luckily, there is a very easy solution (fix) to 
this problem. The problem stems from an update to postgresql with no 
concurrent reversioning in WinGRASS... the old version of postgresql had 
a file named "pq.dll" wich was subsequnetly renamed to "cygpq.dll" for 
the newest cygwing vesion. This new file resides in \\cygwin\bin, and 
all you have to do is to make a copy of it in that directory and rename 
the copy "pq.dll". Make sure you are actually making a copy and not a 
shortcut, as a renamed shortcut will not work. To make sure that 
everything works fine, you may also want to put this "new" pq.dll in 
\\cygwin\usr\bin and \\cygwin\usr\local\bin..."

I hope this solution will work for you as well.

Cheers,

Isaac Ullah


Date: Wed, 17 May 2006 15:34:23 -0400
From: "Marshall Feldman" <marsh at uri.edu>
Subject: [winGRASS] ps.map unable to find component
To: <wingrass at grass.itc.it>
Message-ID: <001101c679e8$e787fb60$52db8083 at MFELDMAN>
Content-Type: text/plain;	charset="iso-8859-1"

Hello,

I’ve installed Grass 6.0.0-2 for cygwin on two systems, one with Windows XP
Pro and the other with Windows XP x64 edition. On each system, I follow the
instructions in
http://mpa.itc.it/markus/osg05/neteler_grass6_nutshell2005.pdf. In both
cases, I get as far as clicking the “Enter GRASS” button (p. 11). Both
systems give the error message that ps.map is unable to find a component.
Yet the substance of the message differs between systems.

On the 32-bit system, the message says it cannot find
libgrass_gis.6.1.cvs.dll. On the 64-bit system, it says it cannot find
pq.dll.

I did as much investigating as I could. A post by Isaac Ullah on 14 Nov 2005
mentions the pq.dll problem
(http://grass.itc.it/pipermail/wingrass/2005-November/000862.html). He ties
it to postgresql 7.4.*, which has been supplanted by postgresql 8.*. On 16
Nov 2005, Jürgen Mischker said that since upgrading to 6.1cvs he always gets
this problem. This may be what's happening with my installation too. Because
of the problem on the 32-bit system, after doing the standard install on the
64-bit system I followed the "Alternative Installation" instructions at
http://geni.ath.cx/grass.html#toc6, thinking this might override any
problems with the stock install. After finishing I noticed its for the
6.1cvs version instead of the 6.0.0-2 version. Apparently the problem with
6.1cvs is not fixed.

Can anyone suggest remedies to either problem?

Thanks.

	Marshall Feldman

Dr. Marshall Feldman
Acting Director of Research and Academic Affairs
Center for Urban Studies and Research 
The University of Rhode Island
80 Washington Street
Providence, RI 02903-1819
email: marsh @ uri.edu (remove spaces) 
telephone: (401) 277-5218
fax: (401) 277-5099





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Isaac Ullah, M.A.
Ph.D. Student, Archaeology
Graduate Assistant, Mediterranean Landuse Dynamics Project
ASU School of Human Evolution and Social Change
Tempe, AZ  85287-2402
 
isaac.ullah at asu.edu
ullah at archaeologist.com
 
http://www.public.asu.edu/~iullah
 
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