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$coefficients["newx"]
newx
1.0
as.numeric(out$coefficients["newx"])
newx (2) instead of the name like out[[1]][[2]].
For a single element like this, use [[ rather than [. Compare:
coefficients(out)["newx"]
# newx
# 1
coefficients(out)[["newx"]]
# [1] 1
More generally, use unname():
unname(coefficients(out)[c("newx", "(Intercept)")])
# [1] 1.0 1.5
head(unname(mtcars))
# NA NA NA NA NA NA NA NA NA NA NA
# Mazda RX4 21.0 6 160 110 3.90 2.620 16.46 0 1 4 4
# Mazda RX4 Wag 21.0 6 160 110 3.90 2.875 17.02 0 1 4 4
# Datsun 710 22.8 4 108 93 3.85 2.320 18.61 1 1 4 1
# Hornet 4 Drive 21.4 6 258 110 3.08 3.215 19.44 1 0 3 1
# Hornet Sportabout 18.7 8 360 175 3.15 3.440 17.02 0 0 3 2
# Valiant 18.1 6 225 105 2.76 3.460 20.22 1 0 3 1
## etc.
If the question is about removing names, another way is here
my_vec <- # some quantile function(returns named vector)
names(my_vec) <- NULL
my_vec
## [1] 1 2 3
An easy and rather direct way to do it is
as.numeric(out$coefficients["newx"])
Another way would be to use broom package:
broom::tidy(out)$estimate[1]
#1.5
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