R help - Feb 2007 - ELIF?

Hello,

Is there an elegant way to implement something like the elif function (e.g.
python) and prevent multiple if-else contruct concatenation when coding in
R?

Sorry for my newbieishness,

Joh

On 2/14/2007 11:35 AM, Johannes Graumann wrote:
> Hello,
> 
> Is there an elegant way to implement something like the elif function (e.g.
> python) and prevent multiple if-else contruct concatenation when coding in
> R?
Why not just concatenate, using "else if"?  For example,

if (condition1) {
    action 1
} else if (condition2) {
    action 2
} else if (condition3) {
    action 3
} else {
    default action
}

There is a switch() function if the condition is something that can be 
computed in advance, e.g. from the example on its man page:

  answer <- switch(type,
              mean = mean(x),
              median = median(x),
              trimmed = mean(x, trim = .1))

Thanks for your help!

Joh

Duncan Murdoch wrote:
> On 2/14/2007 11:35 AM, Johannes Graumann wrote:
>> Hello,
>> 
>> Is there an elegant way to implement something like the elif function
>> (e.g. python) and prevent multiple if-else contruct concatenation when
>> coding in R?
> 
> Why not just concatenate, using "else if"?  For example,
> 
> if (condition1) {
>     action 1
> } else if (condition2) {
>     action 2
> } else if (condition3) {
>     action 3
> } else {
>     default action
> }
> 
> There is a switch() function if the condition is something that can be
> computed in advance, e.g. from the example on its man page:
> 
>   answer <- switch(type,
>               mean = mean(x),
>               median = median(x),
>               trimmed = mean(x, trim = .1))
> 
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