TestDesign: loadStAttrib – R documentation

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loadStAttrib

Load set/stimulus/passage attributes

Description

loadStAttrib is a data loading function to create an st_attrib object. loadStAttrib can read stimulus attributes a data.frame or a .csv file.

Usage

loadStAttrib(object, item_attrib, file = NULL)

Arguments

`object`	set attributes. Can be a `data.frame` or the file path of a .csv file. The content should at least include the column 'STID' referring to the column 'STID' in the `data` slot of the `item_attrib` object.
`item_attrib`	an `item_attrib` object. Use `loadItemAttrib` for this.
`file`	(deprecated) use `object` argument instead.

Value

loadStAttrib returns a st_attrib object.

data a data.frame containing stimulus attributes.

Examples

## Read from data.frame:
itempool_reading   <- loadItemPool(itempool_reading_data)
itemattrib_reading <- loadItemAttrib(itemattrib_reading_data, itempool_reading)
stimattrib_reading <- loadStAttrib(stimattrib_reading_data, itemattrib_reading)

## Read from file: write to tempdir() for illustration and clean afterwards
f <- file.path(tempdir(), "stimattrib_reading.csv")
write.csv(stimattrib_reading_data, f, row.names = FALSE)
stimattrib_reading <- loadStAttrib(f, itemattrib_reading)
file.remove(f)

## TestDesign 1.1.0 - Deprecated arguments
## Not run: 
loadStAttrib(object = "satt.csv", item_attrib) # is equivalent to
loadStAttrib(file   = "satt.csv", item_attrib) # pre 1.1.0

## End(Not run)

TestDesign

Optimal Test Design Approach to Fixed and Adaptive Test Construction

v1.2.2

GPL (>= 2)

Authors

Seung W. Choi [aut, cre] (<https://orcid.org/0000-0003-4777-5420>), Sangdon Lim [aut] (<https://orcid.org/0000-0002-2988-014X>)

Initial release

2021-01-26