Plot probability by D-score, all items — plot_p_d

This function produces a canned ggplot object.

plot_p_d_item(
  pass,
  item_var = "item",
  items = NULL,
  x_var = "d",
  model_name = "",
  xlim = c(0, 100),
  xbreaks = seq(xlim[1], xlim[2], diff(xlim)/10),
  ...
)

Arguments

pass: A data.frame with emperical probabilities per item per month, with expected columns item, cohort, agegp, p, a, n, equate and label.
item_var: Only relevant for long shape. Character string with the name of the column containing item names. The default is item_var = "item".
items: Character vector with item names. If not specified, all columns in the data are included as items (for wide shape) or all items in the item column are included (for long shape).
x_var: Variable representing the continuous x-axis (e.g., age in months, or D-score).
model_name: A string with the model name, used in the plot title.
xlim: Numeric vector of length 2 specifying x-axis limits (in months). Defaults to c(0, 80).
xbreaks: Sequence of breaks for the x-axis.
...: Additional parameters passed down to plot_p_a_one_item().

Value

List of ggplot objects