I have a user defined function in R
blah=function(a,b){
something with a and b
}
is it possile to put this somewhere so that I do not need to remember to load in the workspace every time I start up R? Similar to a built in function like
summary(); t.test(); max(); sd()
You can put the function into your .Rprofile
file.
However, be very careful with what you put there, since it essentially makes your code non-reproducible — it now depends on your .Rprofile
:
Let’s say you have an R code file performing some analysis, and the code uses the function blah
. Executing the code on any other system will fail due to the non-existence of the blah
function.
As a consequence, this file should only contain system-specific setup. Don’t define helper functions in there — or if you do, make them defined only in interactive sessions, so that you have a clear environment when R is running a non-interactive script:
if (interactive()) {
# Helper functions go here.
}
And if you find yourself using the same helper functions over and over again, bundle them into packages (or modules) and reuse those.