id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	platform	cpu
175	v.to.rast labelcol= SegFaults and ignored	hamish	grass-dev@lists.osgeo.org	"Hi,

v.to.rast segfaults with the labelcolumn= option:

{{{
#spearfish
G64> g.region -d
G64> v.to.rast in=fields out=fields.v2r labelcol=label col=cat
WARNING: Area without centroid (may be OK for island)
WARNING: Area without centroid (may be OK for island)
Converted areas: 65 of 65
Converted points/lines: 0 of 0
Segmentation fault
}}}

gdb:
{{{
#0  0xb791ef43 in strcpy () from /lib/tls/i686/cmov/libc.so.6
#1  0xb7f91793 in set_string (x=0xbf81d978, s=0x808c450 ""\""NO DATA\"""", copy=1)
    at string.c:108
#2  0xb7f91681 in db_set_string (x=0xbf81d978, s=0x808c450 ""\""NO DATA\"""")
    at string.c:39
#3  0xb7f91a1c in db_copy_string (dst=0xbf81d978, src=0x808c3a0)
    at string.c:237
#4  0xb7f9276c in db_copy_value (dst=0xbf81d968, src=0x808c390) at value.c:372
#5  0xb7efba1b in db_select_value (driver=0x808b2a0, tab=0x808af08 ""fields"", 
    key=0x808af18 ""cat"", id=0, col=0x8057d88 ""label"", val=0xbf81d968)
    at select.c:195
#6  0x0804c571 in update_labels (rast_name=0x8057d78 ""fields.v2r"", 
    vector_map=0x8057d68 ""fields"", field=1, label_column=0x8057d88 ""label"", 
    use=1, val=1, attr_column=0x8057d98 ""cat"") at support.c:298
#7  0x0804d369 in vect_to_rast (vector_map=0x8057d68 ""fields"", 
    raster_map=0x8057d78 ""fields.v2r"", field=1, column=0x8057d98 ""cat"", 
    nrows=4096, use=1, value=1, value_type=1, rgbcolumn=0x0, 
    labelcolumn=0x8057d88 ""label"", ftype=67) at vect2rast.c:212
#8  0x0804b1f7 in main (argc=7627107, argv=0xb79e2510) at main.c:135
}}}


Also when trying to use the vector cat for the raster cat the labelcolumn is ignored:
{{{
G64> v.to.rast in=fields out=fields.v2r labelcol=label use=cat
WARNING: Area without centroid (may be OK for island)
WARNING: Area without centroid (may be OK for island)
Converted areas: 65 of 65
Converted points/lines: 0 of 0
[success]
G64> r.category fields.v2r
1       Category 1
2       Category 2
3       Category 3
4       Category 4
5       Category 5
6       Category 6
7       Category 7
...
}}}

ie the labelcolumn= is replaced by ""Category n""
{{{
G64> v.db.select fields | head
cat|label
0|""NO DATA""
1|""C. Smith #1""
2|C. Smith#2
3|P. Biggam#1
4|P. Biggam#2
5|P. Biggam#3
6|P. Biggam#5
7|P. Biggam#6
8|P. Biggam#7
}}}


?

thanks,
Hamish
"	defect	closed	normal	6.4.3	Vector	unspecified	fixed	v.to.rast	martinl	Unspecified	Unspecified