Re: [R] How to apply a function to all combinations of the values of 2 or more variables?

ubject: Re: [R] How to apply a function to all combinations of the values of 2 or more variables? by(mf,list(mf$centre,mf$complex),summary) - Phil Spector Statistical Computin

Re: [R] How to apply a function to all combinations of the values of 2 or more variables?

Check out plyr: http://had.co.nz/plyr/ On Wed, Apr 15, 2009 at 2:03 PM, Lane, Jim wrote: > Hi, All > > Forgive me if this is a stupid newbie question. I'm having no luck > googling an answer to this, probably because I don't know the right R > terminology to frame my question. I want to know how

Re: [R] How to apply a function to all combinations of the values of 2 or more variables?

I think you want to have a look at the plyr or doBy packages. It would be easier to give a precise answer with a minimal example. HTH, baptiste On 15 Apr 2009, at 18:03, Lane, Jim wrote: Hi, All Forgive me if this is a stupid newbie question. I'm having no luck googling an answer to this, p

[R] How to apply a function to all combinations of the values of 2 or more variables?

Hi, All Forgive me if this is a stupid newbie question. I'm having no luck googling an answer to this, probably because I don't know the right R terminology to frame my question. I want to know how to run an R function on each combination of the values of 2 or more variables. In SAS-speak this is