[R] How could I use a function saved in one file ? [SEC=UNCLASSIFIED]

[Augusto.Sanabria at ga.gov.au]

Lowie,

You can save the function in a file called
'P_value.txt' or something like it
(I prefer 'P_value.r').
Then you load the function into your R session by
Using:
Source("P_value.txt",sep="")  ).

It is better if you keep all your R functions into
The same directory, say directory "my_rfunc",
Then you load your function using:
Source(paste(my_rfunc,"P_value.txt",sep="")  )

Hope it helps,

Augusto


--------------------------------------------
Augusto Sanabria. MSc, PhD.
Mathematical Modeller
Risk & Impact Analysis Group
Geospatial & Earth Monitoring Division
Geoscience Australia (www.ga.gov.au)
Cnr. Jerrabomberra Av. & Hindmarsh Dr.
Symonston ACT 2601
Ph. (02) 6249-9155






-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of A-A_lowie li
Sent: Monday, 3 May 2010 4:20
To: r-help at r-project.org
Subject: [R] How could I use a function saved in one file ?


Dear All:

        I create a file named :"P_Value" with only one simple function:

        P_Value <- function( Table ) {
            S = fisher.test(Table, alternative = "two.sided");
            return(S$p.value);
        }

        However, it seems that it's impossible to use this function directly, because no matter
        where I save this file, R always reports a missing function. For example,

       > M = matrix(c(25194,2783,307,20),2)
       > P_Value(M)
       Error: could not find function "P_Value"

       Sincerely thanks a lot for any suggestions.

Lowie

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