read.bilog {plink} | R Documentation |
This function imports item and/or ability parameters from BILOG-MG and PARSCALE.
read.bilog(file, ability=FALSE, pars.only=TRUE, as.irt.pars=FALSE) read.parscale(file, ability=FALSE, pars.only=TRUE, as.irt.pars=FALSE, loc.out=TRUE)
file |
filename of .PAR or .SCO file to be imported |
ability |
if TRUE , file is an .SCO file |
pars.only |
if TRUE , only the item parameters will be imported (i.e.,
any other information like standard errors will be dropped) |
as.irt.pars |
if TRUE , the parameters will be output as an
irt.pars object (this is only applicable to item
parameters) |
loc.out |
if TRUE , the step/threshold parameters will be reformated to
be deviations from a location parameter |
Returns a data.frame or an object of class irt.pars
if
as.irt.pars
= TRUE
.
These functions are currently unable to handle output generated when subtests are used.
Jonathan P. Weeks weeksjp@gmail.com