new_msdf()
creates a multiple scaled data frame
(msdf
).
is.msdf()
tests if an object is a multiple scaled data
frame.
new_msdf(x = list(), method, mrit_min, negative_too, sclvals = NULL, df) is.msdf(x)
x | either a multiple scaled data frame ( |
---|---|
method | the method used to produce the multiple scaled data frame
(either |
mrit_min | a numeric constant of length one to specify the marginal corrected item-total correlation. Its value is in the range of 0-1. |
negative_too | a logical constant indicating whether reversed items are
included in the analysis. The default is set to |
sclvals | a numeric vector of length two indicating the start- and endpoint of a scale. |
df | the data frame to analyze. |
new_msdf()
returns a list of data frames with a few
attributes that partially summarize the scaling process.
is.msdf()
returns a logical vector of length one. TRUE
indicates that the object is of type msdf
.
Objects of type `msdf` are for internal use only.