Plot Hinkin-Tracey rating evidence — plot.contentvalid

Provides three complementary views of a construct-rating pretest. "item" reproduces the original one-index plot, "map" places HTC against HTD to show correspondence and distinctiveness jointly, and "profile" draws a target-versus- strongest-competitor gap plot on the original response scale. The latter is a graphical analogue of the mean-rating tables used in Hinkin and Tracey (1999).

Usage

# S3 method for class 'contentvalid_rating'
plot(
  x,
  metric = c("htc", "htd"),
  type = c("item", "map", "profile"),
  label = c("review", "all", "none"),
  show_legend = TRUE,
  ...
)

Arguments

x: A contentvalid_rating object.
metric: Either "htc" or "htd" for type = "item".
type: One of "item", "map", or "profile".
label: Which item labels to draw on the map: "review" (default), "all", or "none".
show_legend: Logical; draw the compact plot key. Default TRUE.
...: Additional graphical arguments passed to graphics::plot().

Value

The input object invisibly.