Create an Item Matrix Object

Provides a way to create an object as a "item_matrix".

item_matrix(x)

Arguments

x	Either a data.frame or matrix.

Value

A item_matrix object.

See also

as_item_matrix()

Examples

# Item matrix values
x = matrix(c(1, 0, 0, 1, 1, 1), ncol = 2)

# Item matrix initialization
items = item_matrix(x)

# View item matrix
items
#> An item matrix: 3 x 2 
#> 
#>          Item1 Item2
#> Subject1     1     1
#> Subject2     0     1
#> Subject3     0     1

# Data Frame encoding of items
items_df = data.frame(
   s1 = c(1, 0, 1, 1, 0, 1),
   s2 = c(0, 1, 0, 1, 1, 0)
)

# Create an Item Matrix
items = item_matrix(items_df)

# View item matrix
items
#> An item matrix: 6 x 2 
#> 
#>          Item1 Item2
#> Subject1     1     0
#> Subject2     0     1
#> Subject3     1     0
#> Subject4     1     1
#> Subject5     0     1
#> Subject6     1     0