Description Usage Arguments Details Value Author(s) References See Also Examples
Computes n1 for the Forward Search for Mokken scale analysis
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X 
Matrix or data frame of numeric data containing the responses of 
B 
Integer giving the number of Forward Searches with different initial subsamples. 
cutoff 
Integer, the first step of the Forward Search for which the number of unique subsamples is below the 
initial.subsample.size 
Integer giving the size of the initial subsample.
By default 
minsize 
Integer giving the minimum size of a rest score group. By default

seed 
Numeric; fixes the random number generation 
verbose 
Logical, indicating whether 
Function fs.MSA.n1
computes the required input for the forward plot (plot.fs.n1.class
).
Therefore, its values should be assigned to an object.
B
should at least be larger than cutoff
, preferably B
≥ 100.
Large values of B
may take much computation time.
number.unique.subsamples
. The number of unique subsamples at each step of the Forward Search.
n1
. The first step for which the number of unique subsamples is below the cutoff.
W. P. Zijlstra w.p.zijlstra@uvt.nl
Zijlstra, W. P., Van der Ark, L. A., and Sijtsma, K. (2011). Robust Mokken scale analysis by means of the forward search algorithm for outlier detection. Multivariate Behavioral Research, 46, 5889.
plot.fs.n1.class
, fs.MSA
, plot.fs.class
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