R help - Jan 2009 - <no subject>

Very simple questions if anyone can help:

(1) what is the value in saving workspaces, which is offered at every close?
I thought it might save the set up of the GUI but I cant work out what it
does ­ I run a script that loads the packages I need at the start of every
session.
(2) mathematica has a term (%) that when typed means the last returned
value, so  >  % + 1 say would return the last outputted value +1 .is there
an R equivalent please?

Many thanks 

glenn

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Hi Glenn,

On Fri, Jan 9, 2009 at 7:20 PM, glenn <g1enn.roberts at btinternet.com>
wrote:
> Very simple questions if anyone can help:
>
> (1) what is the value in saving workspaces, which is offered at every
close?
> I thought it might save the set up of the GUI but I cant work out what it
> does ? I run a script that loads the packages I need at the start of every
> session.
Saving  a workspace doesn't save the packages you have loaded, but
does save your data in its current state, as well as any sourced functions.
Very useful if you have a bunch of work you don't want to reconstruct, or
a simulation that just took three days to run.
> (2) mathematica has a term (%) that when typed means the last returned
> value, so  >  % + 1 say would return the last outputted value +1 .is
there
> an R equivalent please?
I don't think so - you need to assign that value to something to be able
to reuse it.

Sarah

-- 
Sarah Goslee
http://www.functionaldiversity.org