| 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 NAs. 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)