[R] PAM Clustering

[Ulrik Stervbo]

Hi Sema,

read.csv2 use ',' as the decimal separator. Since '.' is used in your file,
everything becomes a character which in turn makes pam complain that what
you pass to the function isn't numeric.

Use read.csv2("data.csv", dec = ".") and it should work.

You can also use class(d) to check the class of the matrix before you pass
it to pam().

See ?read.table for more options.

There is a base function called 'data', so naming a variable data is a poor
choice.

HTH
Ulrik

On Mon, 10 Jul 2017 at 17:25 Sema Atasever <s.atasever at gmail.com> wrote:

> Dear Authorized Sir / Madam,
>
> I have an R script file in which it includes PAM Clustering codes:
>
> *when i ran R script i am getting this error:*
> *Error in pam(d, 10) : x is not a numeric dataframe or matrix.*
> *Execution halted*
>
> How can i fix this error?
>
> Thanks in advance.
> ​
>  data.csv
> <
> https://drive.google.com/file/d/0B4rY6f4kvHeCcVpLRTQ5VDhDNUk/view?usp=drive_web
> >
> ​
>
> *pam.R*
> data <- read.csv2("data.csv")
> attach(data)
> d=as.matrix(data)
> library(cluster)
> cluster.pam = pam(d,10)
> table(cluster.pam$clustering)
>
> filenameclu = paste("clusters", ".txt")
> write.table(cluster.pam$clustering, file=filenameclu,sep=",")
>
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>
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