Generate Graphviz input text to plot a data frame

Produces text input for Graphviz to make an HTML diagram of a given data frame.

Usage

# S3 method for class 'data.frame'
gv(x, name = NA_character_, nest_level = Inf, ...)

x: a data.frame.
name: a character scalar, giving the name of the record, if any. The name must be non-empty, since it is also used to name the single table in the plot. Defaults to NA: if left missing, it is set to "data".
nest_level: an integer, giving the amount of nesting allowed when giving the class of a list column. Since lists can hold anything in R, this allows showing common element classes and lengths.
...: further arguments passed to or from other methods.

A scalar character, containing text input for Graphviz.

The rows in the plotted data frame include information about the attribute classes.