[GRASS-dev] [GRASS GIS] #2036: Failed watershed analysis on Grass

[GRASS GIS]

#2036: Failed watershed analysis on Grass
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 Reporter:  mehmeto             |       Owner:  grass-dev@…              
     Type:  defect              |      Status:  new                      
 Priority:  normal              |   Milestone:  6.4.4                    
Component:  Raster              |     Version:  6.4.2                    
 Keywords:  grass, r.watershed  |    Platform:  MSWindows 7              
      Cpu:  x86-64              |  
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 This is my first day with Grass GIS (version 6.4.2 for Windows). As I
 tried
 [http://grasswiki.osgeo.org/wiki/Quick_wxGUI_tutorial#Watersheds_and_streams
 this tutorial] the watershed analysis failed.


 I carefully put in the parameters as specified on the tutorial.
 The error message is:[[BR]]


 {{{
 (Thu Jul 18 14:10:00 2013)
 r.watershed elevation=elevation at PERMANENT basin=elev.basins
 stream=elev.streams threshold=10000
 SECTION 1a (of 5): Initiating Memory.
 SECTION 1b (of 5): Determining Offmap Flow.
 SECTION 2: A * Search.
 SECTION 3: Accumulating Surface Flow with SFD.
 ERROR: G_calloc: unable to allocate 4 * 60175190 bytes at main.c:91
 Subprocess failed with exit code 1
 category information for [elev.basins] in [user1] missing or invalid
 category information for [elev.streams] in [user1] missing or invalid
 }}}

 I will be glad to receive some help with this as my aim is to do
 hydrological analysis with Grass. Please consider in your reply that I am
 a novice with this program and I am not a technical person.

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Ticket URL: <http://trac.osgeo.org/grass/ticket/2036>
GRASS GIS <http://grass.osgeo.org>