[R] Split comma separated list

[Stephan Kolassa]

Hi Gaurav,

1) tell R when reading the data to consider the third column as 
"character" via the colClasses argument to read.table()

2) foo <- as.numeric(strplit(dataset$List_of_values,","))

3) unlist(foo) or some such

HTH,
Stephan


Gaurav Moghe schrieb:
> Hi all,
> 
> I'm a beginner user of R. I am stuck at what I thought was a very obvious
> problem, but surprisingly, I havent found any solution on the forum or
> online till now.
> 
> My problem is simple. I have a file which has entries like the following:
> #ID       Value1            List_of_values
> ID1          0.342             0.01,1.2,0,0.323,0.67
> ID2         0.010              0.987,0.056,1.3,1.5,0.4
> ID3         0.146              0.1173,0.1494,0.211,0.1257
> ...
> ...
> 
> I want to split the third column (by comma) into individual values and put
> them in a variable so that I can plot a boxplot with those values, one
> boxplot per row . I have been having three issues:
> 1) R identifies the third column as an integer, instead of a list of lists
> 2) I havent been able to split the third column into individual values
> 3) How do I get it in a format suitable for plotting a boxplot?
> 
> Any suggestions? I'd really appreciate any help on this.
> 
> Thank you,
> Gaurav
> 
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