[R] making a grid of points

[Peter Alspach]

Ross

I think you want

?expand.grid

BTW, help.search('grid') finds this.

Cheers ......

Peter Alspach


> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Ross Boylan
> Sent: Friday, 8 December 2006 8:03 a.m.
> To: r-help
> Subject: [R] making a grid of points
>
> I'd like to evaluate a function at each point on a 2 or 3-D
> grid.  Is there some function that already does this, or
> generates the grid of points?
>
> My search has led me to the grid and lattice packages, and I
> found a reference to the sp package (e.g., SpatialGrid) for
> this.  There are things in there that might be relevant, but
> at first blush many of them are embedded in other concepts
> (grobs, shingles, rugs) and don't obviously solve the problem.
>
> I know this is not a hard thing to program, but I suspect
> someone has already done it.  Any pointers?
>
> Thanks.
> --
> Ross Boylan                                      wk:  (415) 514-8146
> 185 Berry St #5700                               ross at biostat.ucsf.edu
> Dept of Epidemiology and Biostatistics           fax: (415) 514-8150
> University of California, San Francisco
> San Francisco, CA 94107-1739                     hm:  (415) 550-1062
>
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