search for: makefoo

Displaying 3 results from an estimated 3 matches for "makefoo".

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2012 Jan 31
1
Using match.arg() with list of functions?
I have a function of two arguments, (m, n) that returns a list with the same structure as the function makefoo below. When m=1, it returns a list of vectors, each of length n. When m>1, it returns a list of square matrices, each of size m x m. makefoo <- function(m, n) { if (m==1) { A <- sample(1:100, n) B <- sample(1:100, n) C <- sample(1:100, n) }...
2013 Jan 28
1
parse/eval and character encoded expressions: How to deal with non-encoding strings?
Hi, I am intending to save a path-describing character object in a slot of a class I'm working on. In order to have the option to use "system.file" etc in such string-saved path definitions, I wrote this ExpressionEvaluator <- function(x){ x <- tryCatch( expr=base::parse(text=x), error = function(e){return(as.expression(x))}, finally=TRUE) return(x) } This
2006 Apr 13
4
Creating an environment for a function.
I am trying to build a function in a context where the environment concept would appear to be useful. But I'm a bit foggy about this concept and would appreciate some pointers and advice. Basically the function I'm building, say foo(x,t), is a function of two variables). Depending on the value of t, foo will return one of the values f1(x), f2(x), ..., fk(x), where each of f1, ..., fk is