[GRASSLIST:2215] grid

[leo.lami at katamail.com]

I would like to make a cell and a site grid with 
Grass but I have some problems. 
I use the command v.mkgrid to mave a vector grid 
and it works 
 
v.mkgrid map=prova grid=10,10, 
coordinate=1630000,4800000 box=1000,1000 angle=0 
type=rows (text or tclk) 
 
then I run v.support and I select 
1  -   Build topology information (Needed for 
digit) 
 
The output say: 
Selected information from vector header 
 Organization:  GRASS Development Team 
 Map Name: 
 Source Date: 
 Orig. Scale:   0 
 Snapping threshold    0.00 
Snapp No snapping will be done 
    Reading Vector file 100% 
    Building areas 100% 
Unclosed area, free end or edge inside area: 
line 30 
Unclosed area, free end or edge inside area: 
line 60 
Unclosed area, free end or edge inside area: 
line 90 
Unclosed area, free end or edge inside area: 
line 120 
(........) 
Unclosed area, free end or edge inside area: 
line 180 
Unclosed area, free end or edge inside area: 
line 210 
Unclosed area, free end or edge inside area: 
line 421 
    Building islands (no islands present) 
    Attaching labels 
PNT_TO_AREA failed: (1630500.000000, 
4800500.000000) (Category 91) 
PNT_TO_AREA failed: (1631500.000000, 
4800500.000000) (Category 92) 
PNT_TO_AREA failed: (1632500.000000, 
4800500.000000) (Category 93) 
(.....) 
PNT_TO_AREA failed: (1632500.000000, 
4808500.000000) (Category 13) 
PNT_TO_AREA failed: (1633500.000000, 
4808500.000000) (Category 14) 
Selected file is [prova] 
 
So I cannot convert the vector grid in site and 
raster format. 
Someone can help me? 
 
Thank you a lot. 
 
Leonardo Lami