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Re: R for Astronomers [message #65495 is a reply to message #65384]

Fri, 06 March 2009 07:22

ben.bighair
Messages: 221
Registered: April 2007

Senior Member

On Mar 5, 2:09 pm, Mike <Michael.Mill...@gmail.com> wrote:
> On Mar 5, 12:10 pm, David Fanning <n...@dfanning.com> wrote:
>
>> Other news about R this morning: R is not immune
>> from the "sky is falling" problem either:
>> http://tinyurl.com/ap7hdq
>
> No which of my loves I chose, I will always shoot myself in the other
> foot eventually. :-)

Hi,

Some folks might initially shy away from R based upon its pass-by-
value behavior as it comes out of the box. For big blobs of data that
can be a real pain. It would be a mistake, however, to think that R
can't pass by reference. I won't pretend to understand how it works,
but some of the clever R authors have developed techniques to employ
pass-by-reference in R. One example is the pretty-easy-to-use R.oo
(http://www1.maths.lth.se/help/R/R.oo/), but there are other examples
in R.

> But I
> still use IDL for many, many things. Computer languages are not quite
> like marriage - I think it is acceptable to be in serious
> relationships with more than one at a time. Of course juggling
> multiple relationships is fraught with danger - witness my continual
> print, x in R and print(x) in IDL...

Man, you can say that again! Another is IDL>source("my_program.pro")
and R>.compile "my_program.r" Argh!

Cheers,
Ben

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[Message index]

		R for Astronomers By: David Fanning on Mon, 02 March 2009 11:54
		Re: R for Astronomers By: Mike[2] on Wed, 04 March 2009 06:26
		Re: R for Astronomers By: David Fanning on Thu, 05 March 2009 06:19
		Re: R for Astronomers By: matsu770610 on Tue, 03 March 2009 23:20
		Re: R for Astronomers By: fburton on Tue, 03 March 2009 10:37
		Re: R for Astronomers By: David Fanning on Fri, 06 March 2009 08:58
		Re: R for Astronomers By: ben.bighair on Fri, 06 March 2009 07:22
		Re: R for Astronomers By: Mike[2] on Thu, 05 March 2009 11:09
		Re: R for Astronomers By: David Fanning on Thu, 05 March 2009 09:10

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