plot_item_mastery {CDM} | R Documentation |
S3 Methods for Plotting Item Probabilities
Description
This S3 method plots item probabilities for non-masters and masters of an item.
Usage
plot_item_mastery(object, pch=c(16,17), lty=c(1,2), ...)
## S3 method for class 'din'
plot_item_mastery(object, pch=c(16,17), lty=c(1,2), ...)
## S3 method for class 'gdina'
plot_item_mastery(object, pch=c(16,17), lty=c(1,2), ...)
Arguments
object |
|
pch |
Point symbols for both groups |
lty |
Line symbols for both groups |
... |
More arguments to be passed. |
Value
Plot
See Also
Plot functions for item response curves: IRT.irfprobPlot
.
Examples
## Not run:
#############################################################################
# EXAMPLE 1: Plot item mastery
#############################################################################
data(sim.dina)
data(sim.qmatrix)
#* estimate DINA Model
mod1 <- CDM::din(sim.dina, q.matrix=sim.qmatrix, rule="DINA")
#* estimate GDINA model
mod2 <- CDM::gdina(sim.dina, q.matrix=sim.qmatrix)
#* plots
plot_item_mastery(mod1)
plot_item_mastery(mod2)
## End(Not run)
[Package CDM version 8.2-6 Index]