On Dec 24, 2009, at 1:33 PM, David Winsemius wrote:

Try this in an R session:

if(.Machine$sizeof.pointer == 4){print("32 bit")} else {print("64 bit")}
Dropped an "e" somehow...

if(.Machine$sizeof.pointer == 4){print("32 bit")} else {print("64 bit")}

# for me it's .... [1] "64 bit"

On Dec 24, 2009, at 1:04 PM, saleem1000 wrote:

Hello,

I am using Mac OS on R. When I start R thru the application menu

What's the "application menu"? How did you install R?

I have the
option of running both the 32 bit version as well as the 64 bit version.

Assuming you are looking at a Finder window for the /Applications/ directory ... What do you see?


When I type in R in terminal I believe it starts up the 64 bit version.

What did you type? Just "R"? Pretty sure that gets you a 32 bit version.

How
can I start the 32 bit version instead??

I'm betting you are already using a 32 bit version. All this Q&A would be unnecessary if you included the results of sessionInfo()


Saleem



David Winsemius, MD
Heritage Laboratories
West Hartford, CT

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David Winsemius, MD
Heritage Laboratories
West Hartford, CT

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