On 24/02/2010 4:31 PM, Georg Ehret wrote:
Dear R communtiy,
I do not understand why this does not work...:
> betaS$SBP
[1] 0.03274 -0.04216 -0.08986 -0.45980 0.60320 -0.63070 -0.05682 0.20130
> t<-c("betaS$SBP")
> t
[1] "betaS$SBP"
> get(t)
Error in get(t) : object 'betaS$SBP' not found
The problem is that betaS$SBP is an expression that extracts a component
of the betaS object, it's not the name of an object. get() only gets
single objects, it doesn't evaluate expressions. You need something like
eval(parse(text=t))
to get what you want.
Duncan Murdoch
[I am trying to use the variable "t" in a loop to call many different
objects, but the pasting together did not work and this simple example does
not neither...]
Thank you and best regards, Georg.
*******************
Georg Ehret
JHU
Baltimore
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