[R-sig-Geo] sp package: how to manage gridlines spacing

[G. Allegri]

I answer myswelf:
> lines(gridlines(x,easts=pretty(bbox(x)[1,],n=20),norths=pretty(bbox(x)[2,],n=20)))
to create 20 lines. I didn't know the pretty() function...

2008/4/6, G. Allegri <giohappy at gmail.com>:
> Is it possible to manage the lines spacing returned from the
>  gridlines() inside sp package?
>
>  Giovanni
>