fsia: addkey – R documentation

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addkey

Add a Key to a Data Frame

Adds the correct responses (key) to a data frame.

addkey(obj, keyline = NULL, keyfile = NULL, keydata = NULL)

`obj`	An object containing the data imported by function `read.formscanner`.
`keyline`	the number of line of the data containing the correct responses to the items. This line is deleted from the data and used as key.
`keyfile`	the name of the file with the correct responses to the items. Column names should match the names of the items.
`keydata`	an R data frame containing the correct responses to the items. Column names should match the names of the items.

keyfile and keydata can contain more items than obj. In this case, items not contained in obj are dropped in the output.

A list with data, key, and eventually weights.

Michela Battauz

data(test)
data(key)
testk <- addkey(test, keydata = key)

Import and Analysis of OMR Data from FormScanner

v1.1.1

GPL-3

Authors

Michela Battauz

Initial release

2017-06-23