plot_intervals function

Plot intervals

Plot intervals on a canvas, typically prepared with plot_region_canvas().

plot_intervals(intervals, estimates = NULL, interval_value_labels = FALSE,
  estimate_value_labels = FALSE, interval_labels_offset,
  estimate_labels_offset, interval_type = "norm",
  plot_estimate_marks = FALSE, estimate_mark_points = c(1.2 *
  graphics::strheight("M"), 0.05, -1.2 * graphics::strheight("M"), -0.05), ...)

Arguments

• intervals: The interval(s) to be plotted. Two column matrix.
• estimates: Estimates for each of the intervals (optional).
• interval_value_labels: Logical value specifying whether interval value labels are to be added.
• estimate_value_labels: Logical value specifying whether estimate value labels are to be added.
• interval_labels_offset: Amount to offset interval labels by from the centre of the end of the interval's plot. c(x1, x2, y1, y2).
• estimate_labels_offset: Amount to offset estimate labels by. c(x, y). Normally want the estimate to be x-located at its value, but may want a y-offset to move it above or below the plot shape that represents the interval.
• interval_type: Set the way the interval is presented. Current options are c("norm", "unif") for a normal distribution-based curve and a box, respectively.
• plot_estimate_marks: Whether to plot marks at the x location of the estimates.
• estimate_mark_points: y positions of the ends of the estimate marks as a numeric vector of length 4. Values are, in order: start (relative to centre), end (relative to box top), start (relative to centre), end (relative to box bottom).
• ...: Further parameters to be passed on.

Details

The estimate_mark_points parameter can be used to set the length of estimate marks, if they are requested using plot_estimate_marks = TRUE. The default is extending a little above and below the interval plot shape and with a gap in the middle big enough for a line of text (a bit bigger than the height of letter "M"). To leave no gap, set the first and third elements to zero, e.g. estimate_mark_points = c(0, 0.05, 0, -0.05). To have the marks not extend outside of the interval shape, set the second and fourth elements to zero, e.g. estimate_mark_points = c(0, 0, 0, 0).