Hi,
It is indeed documented but I'd misinterpreted it, my mistake. I made
the wrong assumption that switch would have a factor method which
would use the string levels, but that just isn't the case.
Thanks for the clarification anyway,
baptiste
On 14 March 2011 22:22, Allan Engelhardt wrote:
>
Dear Baptiste,
On Tue, Mar 8, 2011 at 6:02 PM, baptiste auguie
wrote:
> Dear list,
>
> Reading the help page for ?switch didn't give me more than a hint at
> what's going on here,
>
> x = 5
> y = 2
>
> foo <- function(a="x"){
> switch(a, "x" = x,
> "y" = y)
> }
>
> foo(fac
Maybe I am misunderstanding you, but I think it is documented? The help
page says
switch(EXPR, ...)
[...]
If the value of ‘EXPR’ is not a character string it is coerced to
integer. [...]
Since
is.character( factor('x', levels=c('y', 'x')) )
[1] FALSE
you get
as.integer( factor('x', leve
Dear list,
Reading the help page for ?switch didn't give me more than a hint at
what's going on here,
x = 5
y = 2
foo <- function(a="x"){
switch(a, "x" = x,
"y" = y)
}
foo(factor('x', levels=c('y', 'x')))
# 2
It seems that switch, when given a factor, uses the numeri
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