node_profileplot | R Documentation |
Panel-generating function for visualizing profiles (points and lines) of the parameters from the nodes in IRT tree models.
node_profileplot(
mobobj,
what = c("item", "coef", "threshold", "discrimination", "guessing", "upper"),
parg = list(type = NULL, ref = NULL, alias = TRUE, logit = FALSE),
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,
...
)
mobobj |
an object of class |
what |
specifying the type of parameters to be plotted |
parg |
supplementary arguments for |
id |
logical. Should the node ID be displayed? |
names |
logical or character. If |
abbreviate |
logical. Should item names be abbreviated? If numeric this controls the length of the abbreviation. |
index |
logical. Should different indexes for different items be used? |
ref |
logical. Should a horizontal line for the reference level be drawn? |
col , border , pch , cex |
graphical appearance of plotting symbols. |
linecol , refcol |
character, specifying the line color to use for the profile lines and reference line, respectively. |
bg |
color for background filling. |
xscale , yscale |
x and y axis limits. |
ylines |
numeric. Number of lines used for y-axis labels. |
... |
further arguments currently not used. |
The panel-generating function node_regionplot
is called by the plot
method of "gpcmtree"
object by default and does not have to be called by the user directly.
See regionplot
for details and references
of the drawn region plots and possible values and their meaning for
the argument type
(taken by node_regionplot
).
A panel function which can be supplied to the plot
method for "npltree"
objects
or "mob"
objects fitted by npltree
or gpcmtree
.
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