[R] R- Help (looping)

[Rui Barradas]

Hello,

Your code example doesn't make much sense, it needs decrypting. Let's see,

for(k in 1:length(c1)){
     if(c1[k] < lcl | c1[k] > ucl) {do something}
}

If this is it, then you can completely avoid the loop:

i1 <- c1 < lcl | c1 > ucl       # create an index vector
out.of.control <- c1[ i1 ]    # save the values

When you say you have a column, is it a matrix column? data.frame?
Give a data example with

dput( head(myData, 20) )   # paste the output of this in a post

Hope this helps,

Rui Barradas

Em 29-07-2012 21:59, Wellington G. Silva escreveu:
> Hi,
>
>   
>
> I'm Wellington from Brazil and I have the following issue:
>
>   
>
> I've been working on a project a for a while, and I'm having trouble in
> using the loop (for)
>
>   
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> I need to read a column (c1), and for each value of this column, I need to
> check if it's within the control limits
>
>   
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> So, I was trying to do this:
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>   
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> For (k in 1: c1)
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>   
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> If (c1< lcl1 | c1 > ucl1) {here I need to store the values outside the
> limits)
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>   
>
> I have 5 columns, need to do the same process in each one of them.
>
>   
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> And later on I'm gonna concatenate these 5 vectors and calculate its mean
> for an ARL project.
>
>   
>
>   
>
>   
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>   
>
>
> 	[[alternative HTML version deleted]]
>
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