irt.itemstructure: IRT Structure File Creation

Description Usage Arguments Details Value See Also Examples

View source: R/irt_calibration.R

Description

Creates and Formats Item Structures for IRT Calibration.

Usage

1
irt.itemstructure(items, anchors, write, form)

Arguments

items

The list of items to calibrate in IRT calibration names, see irt.createdata)

anchors

A table of Anchor Items (see imports.anchors)

write

boolean (default = FALSE)- write to .txt file for Winsteps use

form

The form code (only necessary if write = TRUE)

Details

Takes a list of items being calibrated (using the concatenated item name from irt.createdata), and a table of anchor items (see imports.anchors). Merges the two and outputs a list of anchor items- they must be scored on the form, and have an IRT_b value present in the anchor download.

Value

An item structure table

See Also

Other IRT Calibration: irt.cleanupresults, irt.controlcard, irt.createdata, irt.itemanchor, irt.itemweight, irt.personweight

Examples

1
irt.itemweight(ResponseImport, AnchorImport, 1, TRUE)

m070ch/ips.tools documentation built on Jan. 14, 2018, 12:16 p.m.