Like Ben, I wonder what the reason for doing this is.
First of all, the amount of memory indicated by your example is so
small I can't imagine it would make any difference. If you have such
a large number of values that the amount of memory is significant --
and store them somewhere that isn't in memory (such as physical disk
memory), then reading them into memory when you need to use them
might affect performance a lot.
Environment variables use memory also -- it's just someone else's
memory (the OS instead of R).
-Don
At 4:05 PM +0200 8/13/09, <mau...@alice.it> wrote:
Maybe I expect too much from a non compiled language.
Anyway, I wonder whether it is possible in R to set constant values
without using any memory location that would take useless space
bacause such values are not going to be changed along the program.
It's just a way to assign a mnemnic name tos some constant values.
For instance, I would like R interpreter to replace all occurrences
of mnemonic "Monday" with the number 1, "Tuesday" with the number
2, "Wednesday with the number 3, and so on ... without having to
assign such values to memory locations.
Maybe environment variables are the way to go ?
Thank you in advance for your advice,
Maura
tutti i telefonini TIM!
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Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
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