How do I extract just the number from a named number (without the name)?

Question

I am looking for just the value of the B1(newx) linear model coefficient, not the name. I just want the 0.5 value. I do not want the name "newx".

newx <- c(0.5,1.5.2.5)

newy <- c(2,3,4)

out <- lm(newy ~ newx)

out looks like:

Call:

lm(formula = newy ~ newx)

Coefficients:

(Intercept)         newx  

       1.5         1.0  

I arrived here. But now I am stuck.

out$coefficients["newx"]

newx 

1.0 

Answer 1

To extract a single element, you can use the [[ instead of [.

In your case:

newx <- c(0.5,1.5,2.5)

newy <- c(2,3,4)

out <- lm(newy ~ newx)

 coefficients(out)[["newx"]]

[1] 1

You can also use the unname() function as follows:

 unname(coefficients(out)[c("newx", "(Intercept)")])

[1] 1.0 1.5