Re: [R] all.vars for nested expressions

oun...@r-project.org [mailto:r-help-boun...@r-project.org] On > Behalf > Of flxms > Sent: Monday, April 29, 2013 4:34 AM > To: r-help@r-project.org > Subject: [R] all.vars for nested expressions > > Dear R fellows, > > Assume I define > > a <- expression(fn

Re: [R] all.vars for nested expressions

Hi Felix, I thought, this could be an easy task for substitute, and the following works as expected: all.vars(substitute(expression(tp/a),list(a=expression(fn+tp # [1] "tp" "fn" But (of course) all.vars(substitute(sen,list(a=a))) does not yield the desired result, and I can't figure out, how

[R] all.vars for nested expressions

Dear R fellows, Assume I define a <- expression(fn+tp) sen <- expression(tp/a) Now I'd like to know, which variables are necessary for calculating sen all.vars(sen) This results in a vector c(tp,a). But I'd like all.vars to evaluate the sen-object down to the ground level, which would result

[R] all.vars for nested expressions

Dear R fellows, Assume I define a <- expression(fn+tp) sen <- expression(tp/a) Now I'd like to know, which variables are necessary for calculating sen all.vars(sen) This results in a vector c(tp,a). But I'd like all.vars to evaluate the sen-object down to the ground level, which would result