special.matrix: Generating Special Matrices
In phargarten2/matrixNormal: The Matrix Normal Distribution

Description Usage Arguments See Also Examples

Creates an Identity Matrix I and a Matrix of Ones J.

I(): Creates an identity matrix where the number of columns is n. This is a diagonal matrix with all equal to one (1). An identity matrix is usually written as I. Names of rows and columns (dimnames) are included.
J(): Creates a matrix of ones with any number of rows and columns. Names of rows and columns (dimnames) are included.

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I(n)

J(n, m = n)

`n`	Number of rows in I or J.
`m`	Number of columns in J. Default: Same as number of rows.

Other matrix: tr(), vec()

# To create an identity matrix of order 12
I(2)
# To make a matrix of 6 rows and 10 columns of all ones
J(6, 10)
# To make a matrix of unity, dimensions 6 x 6.
J(6)