[R] Looping and paste

[Bert Gunter]

Don't do this!  paste() is vectorized.

paste (BndY,"to",50+seq_len(BndY), "mN", sep = " ")

Cheers,
Bert

On Wed, Nov 23, 2011 at 3:31 PM, B77S <bps0002 at auburn.edu> wrote:
> out <- vector("list")
> Ylab <- for(i in 1:length(BndY))
> {
> out[i] <- paste(BndY[i]," to ",BndY[i],"mN")
> }
>
> Ylab <- do.call(c, out)
>
>
>
>
>
>
> markm0705 wrote
>>
>> Dear R helpers
>>
>> I'm trying to make up some labels for plot from this vector
>>
>> BndY<-seq(from = 18900,to= 19700, by = 50)
>>
>> using
>>
>> Ylab<-for(i in BndY) {c((paste(i," to ",i+50,"mN")))}
>>
>> but the vector created is NULL
>>
>> However if i use
>>
>> for(i in BndY) {print(c(paste(i," to ",i+50,"mN")))}
>>
>> I can see the for loop is making the labels I'm looking for but not sure
>> on my error in assigning them to a vector
>>
>> Thanks in advance
>>
>
>
> --
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-- 

Bert Gunter
Genentech Nonclinical Biostatistics

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