[R] unique: factor to string

[Dimitris Rizopoulos]

do you mean you want:

table(data$names)


I hope it helps.

Best,
Dimitris


Markus Mühlbacher wrote:
> Hi community,
> 
> I want to count the occurrence of values within a dataframe. 
> data$names is a list of many names. With namelist <- unique(data$names) I get all the existing names. But the result is a factor, not a list of strings. 
> 
> I would then like to go trough all the names in a for-loop and count their occurrence. 
> 
> How do I make this?
> 
> Best regards,
> Markus
> 
> 
> 
> 
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-- 
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center

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