[GRASS-dev] [GRASS GIS] #36: v.generalize Assertion failed.

[Daniel Bundala]

Hello,

I just checked it and it works fine for me. I tried it with the map
and command you sent and everything was ok. What version of GRASS do
you use? As I remember, there were a few problems with hermite
interpolation some time ago, but it should be fixed now. The problem
occured when a line in the map contained two consecutive points at the
same position. If this is the case then you can remove such points
with v.generalize itself (method=reduction threshold=eps) or with
v.clean

Daniel

On Feb 5, 2008 2:12 PM, GRASS GIS <trac at osgeo.org> wrote:
> #36: v.generalize Assertion failed.
> ---------------------+------------------------------------------------------
>  Reporter:  marisn   |       Owner:  grass-dev at lists.osgeo.org
>      Type:  defect   |      Status:  new
>  Priority:  major    |   Milestone:  6.4.0
> Component:  default  |     Version:  svn-trunk
>  Keywords:           |
> ---------------------+------------------------------------------------------
>  {{{
>  (gdb) run -r input=cont_4144 at PERMANENT output=cont_4144_general type=line
>  method=hermite threshold=3 look_ahead=7 reduction=50 slide=0.5
>  angle_thresh=3 degree_thresh=0 closeness_thresh=0 betweeness_thresh=0
>  alpha=1.0 beta=1.0 iterations=1 layer=1 --overwrite
>  Starting program: /home/maris/soft/grass_trunk/dist.x86_64-unknown-linux-
>  gnu/bin/v.generalize -r input=cont_4144 at PERMANENT output=cont_4144_general
>  type=line method=hermite threshold=3 look_ahead=7 reduction=50 slide=0.5
>  angle_thresh=3 degree_thresh=0 closeness_thresh=0 betweeness_thresh=0
>  alpha=1.0 beta=1.0 iterations=1 layer=1 --overwrite
>  [Thread debugging using libthread_db enabled]
>  [New Thread 0x2b33d27a2ce0 (LWP 16093)]
>  WARNING: Vector map <cont_4144_general> already exists and will be
>           overwritten
>  Generalization (hermite)...
>   100%
>  Building topology for vector map <cont_4144_general>...
>  Registering lines: v.generalize: index.c:157: RTreeInsertRect: Assertion
>  `r->boundary[i] <= r->boundary[3+i]' failed.
>
>  Program received signal SIGABRT, Aborted.
>  [Switching to Thread 0x2b33d27a2ce0 (LWP 16093)]
>  0x00002b33cf082b45 in raise () from /lib64/libc.so.6
>  (gdb) bt
>  #0  0x00002b33cf082b45 in raise () from /lib64/libc.so.6
>  #1  0x00002b33cf0840e0 in abort () from /lib64/libc.so.6
>  #2  0x00002b33cf07c07f in __assert_fail () from /lib64/libc.so.6
>  #3  0x00002b33ce27df3e in RTreeInsertRect (R=<value optimized out>,
>  Tid=<value optimized out>, Root=0x7fffddb5fa50, Level=0)
>      at index.c:157
>  #4  0x00002b33ce075559 in dig_spidx_add_line (Plus=0x7fffddb5f840,
>  line=12, box=0x7fffddb5f5b0) at spindex.c:128
>  #5  0x00002b33ce071561 in dig_add_line (plus=0x7fffddb5f840, type=2,
>  Points=0x74ad50, offset=105753) at plus_line.c:133
>  #6  0x00002b33cd177cab in Vect_build_nat (Map=0x7fffddb5f830, build=4,
>  msgout=0x2b33cf391760) at build_nat.c:501
>  #7  0x00002b33cd1767a3 in Vect_build_partial (Map=0x7fffddb5f830, build=4,
>  msgout=0x2b33cf391760) at build.c:152
>  #8  0x0000000000404e23 in main (argc=19, argv=0xfffffffe) at main.c:489
>  }}}
>
>  OS: OpenSuSE 10.3 64bit
>  GRASS: svn-trunk rev. 29954
>
> --
> Ticket URL: <http://trac.osgeo.org/grass/ticket/36>
> GRASS GIS <http://grass.osgeo.org>
> GRASS Geographic Information System (GRASS GIS) - http://grass.osgeo.org/
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