[GRASS5] request for new user

[yellala suresh reddy]

hello,
I am new to GRASS 5.0,
any body will help me .....

in installing Grass in linus and what r the other requirements we 
need to install other thatnGrass 5.0 .
How to work with Grass ?
What r the steps to take first first time users ?
Give me the web urls those will help me in this regard?
To compile what we need ?
bye




On Thu, 28 Nov 2002 Radim Blazek wrote :
>On Thursday 28 November 2002 03:29 am, Eric G. Miller wrote:
> > *  Fixes interior boundary winding (shapefiles have exteriors 
>clockwise,
> >    interiors counterclockwise) for areas with holes.  AFAIK,
> >    Vect_get_area_points and Vect_get_isle_points always return 
>clockwise
> >    polygons. So isle point orders are reversed. Isles will 
>come up
> >    twice, once as interior and once as exterior. (If my 
>understanding of
> >    these API's is incorrect, someone please let me know.)
>
>I thought that direction for areas/isles is the same in grass as 
>in shapefile
>and Vect_get_isle_points returns counterclockwise vertices:
>
>struct P_isle {
>   plus_t  *lines;  /* Boundary Lines (Negative means N2 to N1
>                       counter-clockwise) */
>}
>
>int Vect_get_isle_points () {
>       if (Isle->lines[i] < 0) {
>           start = Points.n_points - 1; inc = -1 ; end = 1;
>       } else {
>           end = Points.n_points - 2; inc = 1 ; start = 0;
>       }
>}
>
>It is strange if shapefiles with reverted order of isles are 
>correct.
>Did you check it in ArcExplorer or other ESRI SW (AE runs on 
>Linux)?
>
>Radim
>
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