Panel-generating function for visualizing the parameters from the nodes in Rasch, rating scale or partial credit tree models.
node_profileplot(mobobj, what = c("items", "thresholds", "discriminations"),
parg = list(type = NULL, ref = NULL, alias = TRUE), id = TRUE,
names = FALSE, abbreviate = TRUE, index = TRUE, ref = TRUE, col = "black",
border = col, linecol = "black", refcol = "lightgray", bg = "white",
cex = 0.5, pch = 21, xscale = NULL, yscale = NULL, ylines = 2, ...)an object of class "mob" based on rasch models
fitted by raschmodel, rating scale models
fitted by rsmodel or partial credit
models fitted by pcmodel.
character, specifying the type of parameters to be plotted.
logical. Should the node ID be displayed?
logical or character. If TRUE, the names of
the items are displayed on the x-axis. If FALSE, numbers of
items are shown. Alternatively a character vector of the same
length as the number of items can be supplied.
logical. Should item names be abbreviated? If numeric this controls the length of the abbreviation.
logical. Should different indexes for different items be used?
logical. Should a horizontal line for the reference level be drawn?
graphical appearance of plotting symbols.
character, specifying the line color to use for the profile lines and reference line, respectively.
color for background filling.
x and y axis limits.
numeric. Number of lines used for y-axis labels.
further arguments currently not used.
A panel function which can be supplied to the plot method for
"mob" objects.
The panel-generating function node_profileplot is called by the
plot method for "raschtree" objects and does not have to
be called by the user directly.
Prior to version 0.13-1, node_profileplot
was called node_raschplot.