[R] Using R function in Excel

[kchine at ebi.ac.uk]

Dear John,

The R Workbench (biocep project) comes with a powerful Spreadsheet view
fully connected to an R session. you can use it to do exactly what you
want and it has much more features :

 from within the spreadsheet view you can :
        *import any R Data (numeric, integer, character, logical, complex,
factor, matrix, data frame ) via the toolbar button import from R
(R+arrow towards the spreadsheet)
        *export selected cells to R and assign the content of the cells to
an R variable via the toolbar button export to R (R+arrow towards
R)
         you specify the type of export (numeric, integer, character,
logical, complex, factor, data frame )
         for data frame, you should append to the column name the type of
the column between parathesis ("weight(integer)",
"mesure1(numeric)", "state(factor)", ..)
        * Evaluate an R expression and use the current selection as
argument (the toolbar button R evaluate (R+ruuning man))
         for example you can type "t(%%)" in the R Expression field. This
transposes the selected cells matrix. The result is sent to the
clipboard and you can paste on will
        * type in a cell an expression to evaluate and use any R fucntion,
example in A4 type "=mean(A1:A3)" the content of A4 will be
computed using R fucntion mean and the
         cell value will be the mean of the vector A1:A3. all the R
functions dealing with numeric vectors or matrixes can be used
        * Copy/Paste to and from Excel
        * create as many SpreadSheet Views as needed and specify the
suitable dimensions

on windows and Mac OS, you can use this link to install the R Workbench
http://www.ebi.ac.uk/microarray-srv/frontendapp/rworkbench.jnlp

for more information :
http://www.ebi.ac.uk/microarray-srv/frontendapp/BIOCEP_README.txt

Karim

> Does anyone know a way that an function written in R can be called within
> a cell of an Excel spreadsheet. I would like to use the R function much as
> I use the native Excel functions, e.g. instead of using the excel function
> sum, =sum(A2,A6), I would like to use the function mysum written in R,
> e.g. =mysum(A2,A6).
>
> Thanks,
> John
>
> John Sorkin M.D., Ph.D.
> Chief, Biostatistics and Informatics
> University of Maryland School of Medicine Division of Gerontology
> Baltimore VA Medical Center
> 10 North Greene Street
> GRECC (BT/18/GR)
> Baltimore, MD 21201-1524
> (Phone) 410-605-7119
> (Fax) 410-605-7913 (Please call phone number above prior to faxing)
>
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