Tilde is used to separate the left- and right-hand sides in a model formula.

Usage

y ~ model

Arguments

y, model

symbolic expressions.

Details

The left-hand side is optional, and one-sided formulae are used in
some contexts.

A formula has modecall. It can be subsetted by
[[: the components are ~, the left-hand side (if
present) and the right-hand side in that order.

References

Chambers, J. M. and Hastie, T. J. (1992)
Statistical models.
Chapter 2 of Statistical Models in S
eds J. M. Chambers and T. J. Hastie, Wadsworth & Brooks/Cole.