Re: [R] if one of 4 conditions is not satisfied

From: mysimbaa <adel.tekari_at_sisltd.ch>
Date: Tue, 01 Jul 2008 10:08:29 -0700 (PDT)

Thank you very much for your precise help. I will try to implement this tomorrow.
It looks like the best solution which could be done. Greetings,

Adel Tekari

Marc Schwartz wrote:
>
> on 07/01/2008 07:40 AM mysimbaa wrote:

>> I'm trying to do realize the following:
>> I have 4 condtions.
>> If all conditions are satisfied I will paste("PASS")
>> If any of these is not satisfied I will paste("FAIL"). But I have to
>> paste
>> the corresponding failure.
>> 
>> ifelse is a good solution but for a 2 conditions. Maybe switch or
>> something
>> like this.
>> 
>> Does anyone have an idea how to do?
>> 
>> Thanks in advance.
>> Adel

>
> An easy way would be to have your condition results, which are
> presumably TRUE/FALSE, in a vector such as:
>
> Cond <- c(TRUE, FALSE, FALSE, TRUE)
>
> Then you could use all() to check to see if they are 'all' TRUE:
>
> > all(Cond)
> [1] FALSE
>
> Then use which() to get the index of the FALSE elements:
>
> > which(!Cond)
> [1] 2 3
>
> If you have your test labels in a character vector, such as:
>
> Cond.Vec <- c("Cond 1", "Cond 2", "Cond 3", "Cond 4")
>
> You could then use:
>
> if (all(Cond)) {
> Out <- "PASS"
> } else {
> Out <- paste("FAIL:", paste(Cond.Vec[which(!Cond)],
> collapse = " & "))
> }
>
>
> > Out
> [1] "FAIL: Cond 2 & Cond 3"
>
>
> See ?all and ?which
>
> HTH,
>
> Marc Schwartz
>
> ______________________________________________
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>
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