[R] Determining response variable in a formula

I have a formula from which I want to deduce the name of the response variable. One way of doing so is as follows: my.form - as.formula(y ~ x + z) all.vars(my.form)[1] [1] y Is there a better way and/or preferrred method of determining y from my.form than this one? In messing around with

Re: [R] Determining response variable in a formula

David Kane wrote: I have a formula from which I want to deduce the name of the response variable. One way of doing so is as follows: my.form - as.formula(y ~ x + z) all.vars(my.form)[1] [1] y Is there a better way and/or preferrred method of determining y from my.form than this

Re: [R] Determining response variable in a formula

is it what you want? dat-data.frame(x=rnorm(10),y=rnorm(10),z=rnorm(10)) my.form - as.formula(y ~ x + z) my.form y ~ x + z m-model.frame(my.form,data=dat) model.extract(m,response) 1 2 3 4 5 6 7 -0.3434826 1.0145622 -0.4749584