[GRASS-user] Trouble with v.in.ascii (x2) and v.out.ogr

[Paulo Marcondes]

Hi all,

I had issues while triyng to import an ASCII vector file,
that looks like this:

 B 240 1
  333967.494 7610503.977
...
  326155.900 7603082.951
  326839.399 7603864.114
  326937.046 7604938.215
  327327.636 7606109.959
  327522.930 7607086.404
  327620.578 7607965.208
  327229.988 7608355.789
  324886.484 7608941.668
  323910.043 7609722.815
  324007.691 7610308.694
  327327.636 7610601.634
  330256.992 7610894.559
  331331.080 7610992.215
  332112.227 7611382.796
  332698.111 7611773.377
  334065.141 7610992.215
  334260.436 7610601.634
 1 1

This should be a polygon that limits a very interesting feature.
Also, I didn't manage to, while exporting to shape, have the polygon
filled. (the GRASS polygon fills OK)

Also, I had issues while trying to import an 815k lines ASCII vector file,
that looks like this:

ORGANIZATION: Company
DIGIT DATE:   10/06/2008
DIGIT NAME:   Me
MAP NAME:     Isopach
MAP DATE:     2008
OTHER INFO:   Geodetic Info
MAP THRESH:   100
VERTI:
P 815257 1
 287750.911964  7501478.351623  -140.000000
...
 353361.492455  7654299.848450  -88.000000
 353461.508591  7654299.848450  -88.000000
 353561.524727  7654299.848450  -84.000000
 353661.540863  7654299.848450  -88.000000
 353761.557000  7654299.848450  -88.000000
 353861.573136  7654299.848450  -84.000000
 353961.589272  7654299.848450  -88.000000
 354061.605408  7654299.848450  -88.000000
 354161.621544  7654299.848450  -84.000000
 1 1

I tried the import with the following command:
v.in.ascii -b in=/path/to/file.ascii
out=alvo1_isocrona fs='\t' y=2 z=3 --o

and got the following:

Maximum input row length: 42
Maximum number of columns: 3
Minimum number of columns: 1
WARNING: Cannot remove directory
        '/u/user/gisdata/Location/PERMANENT/.tmp/soledade/23183.1'
ERROR: y column number > minimum last column number
      (incorrect field separator?)

This file represents a XYZ triplet for each point along a grid over
said interesting feature. Z values meaning the variable of interest =]
The grid is has 100x100m cells and GRASS region resolution is:
nsres:      99.97437069
ewres:      100.01647621

that I have defined previously with
$ g.region res=100 (also, g.region nsres=100 ewres=100 yields the same
region resolution)

When I imported (almost) the same ASCII file with r.in.xyz, somewhere
in the northern part of the raster I got a blank E-W line, that I feel
has something to do with that resolution difference (99.97 vs 100m)

So, what I tried to do was import as vector points to interpolate and
generate a nice raster.
-- 
Paulo Marcondes = PU1/PU2PIX
-22.915 -42.224 = GG86jc