irt.controlcard: IRT Control Card Creation

In m070ch/ips.tools: Tools for IPS

Description

Creates and Formats Control Card for IRT Calibration.

Usage

irt.controlcard(responses, data, struct, items, form, round, write)

Arguments

responses	The test responses dataframe (see import.responses)
data	The table used as the 'DATA' file for the IRT calibration (see irt.createdata)
struct	The structure table as input for the IRT Calibration
items	The list of items to calibrate in IRT calibration names, see tool.itemlist)
form	The form code (only necessary if write = TRUE)
round	Is it the first or second calibration?
write	boolean (default = FALSE)- write to .txt file for Winsteps use

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

The winsteps Control Card

See Also

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

Examples

irt.controlcard(ResponseImport, ResponseImportClientResults, StructOutput, ItemList, "AB2016A_01", 1, TRUE)

m070ch/ips.tools documentation built on May 18, 2019, 8:09 p.m.