How to remove intercept in R

Question

I need to create a probit model without the intercept. So, how can I remove the intercept from a probit model in R?

Answer 1

Also, if you have an existing formula object, foo, you can remove the intercept with update like this:

foo <- y ~ x1 + x2
bar <- update(foo, ~ . -1)
# bar == y ~ x1 + x2 - 1