Re: [R] filling array with functions

From: Jerome Asselin <jerome.asselin.stat_at_gmail.com>
Date: Fri, 22 Apr 2011 13:18:06 -0400

On Fri, 2011-04-22 at 10:02 -0700, derek wrote:
> Hello R,
>
> I would like to find out how to generate array full of functions. I tried it
> like this:
>
> fv=array(,dim=c(1,10))
> V=c(1:10)
> for (i in 1:10){
> fv[i]<-function(x)(V[i]-b*a*x) # b, x are constants.
> }
>
> But it returns:
> "incompatible types (from closure to logical) in subassignment type fix"
>

You could parse individual expressions.

fv=array(,dim=c(1,10))
V=c(1:10)
for (i in 1:10){
fv[i]<-parse(text=paste("function(x)(V[", i, "]-b*a*x)", sep="")) }

a=1;b=1
eval(fv[3])(7)

Hope this helps.



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