this bug's URL: http://intevation.de/rt/webrt?serial_num=5184
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Subject: r.null -n: always creates a null bitmap - no matter if it already exists
(filling a bug report for Benjamin Ducke)
Platform: GNU/Linux/x86_64
grass obtained from: CVS
grass binary for platform: Compiled from Sources
GRASS Version: GRASS 6.1.cvs (2006)
the -n option is supposed to only do work (ie create a null bitmap) if
the null bitmap doesn't already exist. Currently it always does it.
only_null is the flag option and is only referred to in null.c in the
following if statement:
if(only_null && !G_find_file(element, "null", mapset))
{
sprintf (buf, "%s doesn't have null bitmap file! Exiting", name);
G_warning(buf);
exit(0);
}
It should probably be:
if(!only_null && !G_find_file(element, "null", mapset))
{
sprintf (buf, "%s doesn't have null bitmap file! Exiting", name);
G_warning(buf);
exit(0);
}
and have another test for checking whether the file does exist and -n
is set. i.e.
if(only_null && G_find_file(element, "null", mapset))
{
exit(0);
}
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