Last data update: 2014.03.03
|
R: Plotting an object of class nrm
Plotting an object of class nrm
Description
This plotting routine draws the Category Characteristic Curves (CCC) for each item.
Usage
## S3 method for class 'nrm'
plot(x, numbpoints = 100, fromto = c(-4, 4), ...)
Arguments
x |
Commit an object of class 'nrm' which is a result of the nrm function.
|
numbpoints |
A numerical vector of length 1, which denotes the number of points on the x-axis to draw the curves.
|
fromto |
A numerical vector of length 2, which is about the same as xlim.
|
... |
More arguments for plot.
|
Author(s)
Manuel Reif
See Also
nrm
Examples
## Not run:
# Simulating 5 Items within a loop
ParList <- lapply(1:5,function(x)
{
Item1 <- c(c(-2,-1,1,2),c(-1.2,0.3,0.2,0.7))
names(Item1) <- c(paste("zeta",1:4,sep=""),paste("lamb",1:4,sep=""))
Item1
})
names(ParList) <- paste("item",1:5,sep="")
# simulate person parameters
perp1 <- rnorm(1500,0,1)
# simulate data.frame
sim.nrm.1 <- NRM.sim(ParList,perp1)
# reshape
reshdat1 <- reshMG(sim.nrm.1,items=1:5,correct=rep(0,5))
# fit the nrm
res.nrm <- nrm(reshdat1)
# finally the plot
plot(res.nrm)
## End(Not run)
Results
|