making a grid of points

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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making a grid of points

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