I can verify the error listed below. My students have had the same problem.

Michael
____________________
C. Michael Barton, Professor of Anthropology
Director of Graduate Studies
School of Human Evolution & Social Change
Center for Social Dynamics & Complexity
Arizona State University

Phone: 480-965-6262
Fax: 480-965-7671
www: <www.public.asu.edu/~cmbarton>



On Mar 31, 2008, at 5:11 AM, [EMAIL PROTECTED] wrote:
Date: Mon, 31 Mar 2008 11:53:50 -0000
From: "GRASS GIS" <[EMAIL PROTECTED]>
Subject: [GRASS-dev] [GRASS GIS] #111: r.los error "r.los.exe there
        are encountered to problem and needs to close"
To: undisclosed-recipients:;
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset="utf-8"

#111: r.los error "r.los.exe there are encountered to problem and needs to close" ---------------------------- +-----------------------------------------------
 Reporter:  gsancho         |       Owner:  [email protected]
     Type:  defect          |      Status:  new
 Priority:  major           |   Milestone:  6.4.0
Component:  default         |     Version:  unspecified
 Keywords:  wingrass r.los  |
---------------------------- +-----------------------------------------------
 Hello.

I have a problem with the operation r.los in winGrass(native). I have been testing different maps and when a distance is greater than 80-100 pixels
 (map pixels) a system error is thrown.

To put an example, in spearfish data base and the elevation.dem map, grass
 fails from 2524m on up  (with the height of the observer set to 1m)

 The command would be:
 r.los input=elevation.dem output=los coordinate=599505,4921010
 max_dis=2525

 The error that is reported is a system error: "r.los.exe there are
 encountered to problem and needs to close"

 Thanks and regards.

--
Ticket URL: <http://trac.osgeo.org/grass/ticket/111>
GRASS GIS <http://grass.osgeo.org>
GRASS Geographic Information System (GRASS GIS) - http:// grass.osgeo.org/

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