plot.formula {base} | R Documentation |
Specify a scatterplot via a formula.
plot.formula(formula, data = NULL, subset, na.action, ..., ask = TRUE) plot(y ~ x, ...)
formula |
a formula , such as y ~ x . |
data |
a data.frame (or list) from which the variables in
formula should be taken. |
subset |
an optional vector specifying a subset of observations to be used in the fitting process. |
na.action |
a function which indicates what should happen
when the data contain NA s. The default action (na.omit )
is to omit any incomplete observations.
The alternative action na.fail causes plot to
print an error message and terminate if there are any incomplete
observations. |
... |
graphical parameters may also be passed as arguments, see
par . These can include ylab , which if not
supplied is set by plot.formula . |
ask |
logical, see par . |
This function is invoked for its side effect of drawing a scatter plot in the active graphics window.
data(swiss) op <- par(mfrow=c(2,1)) plot(Fertility ~ Education, data = swiss) plot(Fertility ~ Education, data = swiss, subset = Education < 20) par(op)