This function retrieves the associated data from the current plot.
Usage
iplot.data(id=NULL)
Arguments
id
number of the variable to retrieve. If omitted a list of
all associated varaibles (and their contents) is returned.
Value
A vector representaing a variable or a list of variable contents. The
first two vecctors in the list are traditionally named x and
y. The number of variables depends on the plot used,
e.g. scatter plot has two, histogram or bar chart return one.