[R] fitdistr()

[jim holtman]

I assume that you want to do the fitdistr on one of the columns of the
dataframe that you have read in. What does 'str(ONES3)' show?  If the
data is in the first column, try:

fitdistr(ONES3[[1]],"chi-squared")


On 9/9/07, Terence Broderick <red_tez at yahoo.co.uk> wrote:
> I am trying to fit the chi-squared distribution to a set of data using the fitdistr function found in the MASS4 library, the data set is called ONES3, I have loaded it using the command
>
>  ONES3<-read.table("ONES3.pdf",header=TRUE,na="NA")
>
>  I print out the dataset ONES3 to the screen to make sure it has loaded
>
>  Then I try to fit this data using the command fitdistr
>
>   fitdistr(ONES3,"chi-squared")
>
>  and it returns the comment
>
>  Error in fitdistr(ONES3, "chi-squared") : 'x' must be a non-empty numeric vector
>
>  Can anybody help with this, I imagine it is a common mistake for beginners like myself
>
>
>
> audaces fortuna iuvat
>
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>
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-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?