[GRASS-user] r.terraflow.short no output, failed

Hamish hamish_b at yahoo.com
Thu Jun 11 08:03:49 EDT 2009

Falk Grossmann wrote:
> I am having some problems getting something useful out of
> r.terraflow.short.

what version of GRASS?
what OS do you use?
> I have a fairly large rasta (Data type CELL, rows: 12,500
> columns: 6,250 total: 78125000). My final objective is to
> get a watershed basin limits and river network.

you probably want r.watershed to get full watershed basins, r.terraflow
basins are a slightly different creature. also, you'll want to use
r.watershed from a newer 6.4.0RC release. the older versions are
horribly slow. see the help page for hints on extracting river networks.

> Since the rasta is large and in integer for I have tried using
> r.terraflow.short. However the command finished in 0 sec and
> no outputs are generated. The message is as follows:
> r.terraflow.short -s --overwrite --verbose
> elevation=431112 at Imatong filled=1fld direction=1dir
> swatershed=1snk accumulation=1acc tci=1tci memory=100
> stats=3stats.out
> file 3stats.out exists - renaming.
> ami_single_temp_name: mkstemp failed: : No such file or directory
> Assertion failed: 0, file ami_stream.cc, line 75
> This application has requested the Runtime to terminate it
> in an unusual way.
> Please contact the application's support team for more information.

please try with 6.4.0RC5, there was a recently fixed bug which may have
been corrupting the STREAM_DIR option. (?)



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