read_kdata: Read a response patterns file

In kstIO: Knowledge Space Theory Input/Output

Read a response patterns file

Description

Read a set of response patterns from a file. The file formats are described in the kstIO-package information page.

Usage

  read_kdata(filename, 
             format = "auto", 
             as.letters = TRUE,
             header = TRUE,
             sep = ',')

Arguments

filename	A character string specifying the name of the data file.
format	Specification of the files format. Can be "SRBT", "KST", "matrix", "CSV", or "auto" (default).
as.letters	logical, should the elements of the sets be letters or numbers?
header	For spreadsheet files only: does the file contain a header row?
sep	For CSV files only: character separating cells within a row.

Details

The format values "SRBT", "KST", and "matrix" refer to the different generations of file formats described in kstIO-package. The value "auto" (default) requests an automatic detection of the format by thje read_XXX function.

If as.letters is TRUE the item names are letters, otherwise numbers. If the data are read from a spreadsheet file (CSV, XLSX, or ODS) containing a header row, item names are taken from there. If they are read from a spreadsheet file without header, the reading function automatically assigns item names from "V1" to "Vn" where n is the number of items.

Value

A binary matrix with the response patterns.

Note

In automatic format detection, the distinction between "matrix" and "KST" formats work somewhat heuristic. In other words, in rare cases the automatic detection might give the wrong result.

Author(s)

Cord Hockemeyer [e-mail]

References

Hockemeyer, C. (2001). KST Tools User Manual (2nd ed.). https://resources.cord-hockemeyer.info/techreports/KST-Tools_TechRep_FWF01.pdf.

Poetzi, S. & Wesiak, G. (2001). SRbT Tools User Manual. https://resources.cord-hockemeyer.info/techreports/SRBT-Tools_TechRep_FWF01.pdf

See Also

kstIO-package

Examples

# Produce a data file
d <- getwd()
setwd(tempdir())
space <- kmunionclosure(phsg$basis)
data <- kmsimulate(space, 10, 0.1, 0.05)
write_kdata(data, "phsg.ods", "ODS") # matrix format (without any headers)
# Read file; only the first ten rows of the matrix are printed by default
read_kdata("phsg.ods") # Automatic format detection (default)
data <- read_kdata("phsg.ods", "ODS") # Explicit format specification
data
dim(data)
setwd(d)

kstIO documentation built on March 8, 2026, 5:06 p.m.