Plot numeric or character values — flexiplot • inferno

Plot function that modifies and expands the graphics package's graphics::matplot() function in several ways.

Usage

flexiplot(
  x,
  y,
  xdomain = NULL,
  ydomain = NULL,
  xlim = NULL,
  ylim = NULL,
  type = "l",
  pch = c(1, 2, 0, 5, 6, 3),
  lty = c(1, 2, 4, 3, 6, 5),
  lwd = 2,
  col = palette(),
  alpha.f = 1,
  xjitter = NULL,
  yjitter = NULL,
  grid = TRUE,
  cex.main = 1,
  add = FALSE,
  ...
)

Arguments

x: Numeric or character: vector of x-coordinates. If missing, a numeric vector 1:... is created having as many values as the rows of y.
y: Numeric or character: vector of y coordinates. If missing, a numeric vector 1:... is created having as many values as the rows of x.
xdomain, ydomain: Character or numeric or NULL (default): vector of possible values of the variables represented in the x- and y-axes, in case the x or y argument is a character vector. The ordering of the values is respected. If NULL, then unique(x) or unique(y) is used.
xlim, ylim: NULL (default) or a vector of two values. In the latter case, if any of the two values is not finite (including NA or NULL), then the min or max x- or y-coordinates of the plotted points are used.
alpha.f: Numeric, default 1: opacity of the colours, 0 being completely invisible and 1 completely opaque.
xjitter, yjitter: Logical or NULL (default): add base::jitter() to x- or y-values? Useful when plotting discrete variates. If NULL, jitter is added if the values are of character class.
grid: Logical: whether to plot a light grid. Default TRUE.
...: Other parameters to be passed to graphics::matplot().

Details

Some of the additional features provided by flexiplot are the following. First, either or both x and y arguments can be of class base::character. In this case, axes labels corresponding to the unique values are used (see arguments xdomain and ydomain). A jitter can also be added to the generated points, via the xjitter and yjitter switches. Second, it allows for the specification of only a lower or upper limit in the xlim and ylim arguments. Third, it uses a cleaner plotting style and a default argument type = 'l' (line plot) rather than type = 'p' (point plot).