passing parameters to an R script
No you can not pass an address to a function. If you want to change the value of something, then return it as a value and assign it to the object so you can see what is going on. Must be coming from the "C" environment where such things are allowed and lead to a number of problems. If you really have your heart set to do it, look at the '<<-' operator (or 'assign'), but use it with care. To retrieve environment values, use "Sys.getenv".
On Sat, Jan 3, 2009 at 1:32 PM, <mauede at alice.it> wrote:
I knowf R functions ca be called passing some parameters.
My first question is: how are parameters passed to R functions ?
Browsing through R archives I found an answer confirming taht parameters can
be passed to the called function by value. I wonder whether passing the parameter
address is possible somehow to allow the function to actually change its value.
My second question is about running R scripts with parameters. Something similar to the
s/w device (argc, argv) which is used to run a C program with initial parameters.
Is this possible at all ?
Thank you very much.
Maura
tutti i telefonini TIM!
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