Description Usage Arguments Details Value Author(s) See Also Examples
An “ifile” is a data frame containing statistical output for a set of items. A “pfile” is a data frame containing statistical output for a group of people, or examinees. These functions create, read, and convert to “ifile” and “pfile” objects.
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measure |
numeric vector of item locations |
entry |
item position numbers, normally a sequence from 1 to the number of items |
x |
a data frame with items as rows, containing, at a minimum, columns titled “measure” and “entry” |
filename |
path to the file, which is assumed to be a table in 'csv' format |
skip |
number of header lines to skip, defaulting to 1 |
col.names |
vector of column names to be added to the file after it is read in |
sep |
the field separator character, sent to |
header |
boolean, with default |
... |
For |
The ifile contains item-level information, and the pfile person-level information, based on a fit of the Rasch model to a set of item-response data.
Using read.ifile
and read.pfile
, the ifile and pfile are read in as 'csv' files, i.e., tables with sep = ","
. These functions are simple wrappers for the function read.csv
.
A data frame of class “ifile” or “pfile”
Anthony Albano tony.d.albano@gmail.com
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