[R] How to make own function load automatically on startup

Katharine Mullen kate at few.vu.nl
Sat Oct 27 20:37:13 CEST 2007

Regarding your first issue:
you could make a package to contain your function (see ?package.skeleton
and the manual "Writing R extensions") - then you could use
library(yourpackagename).  Or you could save the definition of your
function(s) in a text file, and use source("textfilename") to load the
definition(s) after you start R.

Regarding your third issue:
see help("::")

On Sat, 27 Oct 2007, Jonas Malmros wrote:

> Dear list members,
> I have written a function, called say Analysis. I supply an Excel file
> name as an argument, it does analysis on this file and returns a pdf
> file with specific plots, and a text file with several statistical
> models' output (I extract certain values from the output and create my
> own custom dataframe with output).
> As of now I have to open the script file and load the function by hand
> every time I start R. I want to make it load automatically into the
> environment when I start R. How can I make this happen?
> Also, is there a simple way to combine plots and my custom dataframe
> with model output in one pdf file? I do use LaTeX, but my collegues
> who want to run this function as well do not know what LaTeX is. So I
> wonder if I can avoid LaTeX when creating this combined PDF file?
> (Avoid in the sense that one does not have to fiddle with LaTeX
> itself).
> Finally, another small question.
> My code contains following snippet: "xlsReadWrite::read.xls", this is
> because another package I load masks read.xls function and :: help me
> to select correct read.xls. I guessed this use of :: but I would
> really like to know what :: is and where can I read more about this
> function?
> Thank you very much in advance for your time and help!
> --
> Jonas Malmros
> Stockholm University
> Stockholm, Sweden
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