Returns the direct sum of two matrices.
DirectSum(...)
matrix
List of one or more matrices
W. P. Bergsma w.p.bergsma@lse.ac.uk
Standard mathematical direct sum operator.
Bergsma, W. P. (1997). Marginal models for categorical data. Tilburg, The Netherlands: Tilburg University Press. http://stats.lse.ac.uk/bergsma/pdf/bergsma_phdthesis.pdf
Bergsma, W. P., Croon, M. A., & Hagenaars, J. A. P. (2009). Marginal models for dependent, clustered, and longitudunal categorical data. Berlin: Springer.
ConstraintMatrix, DesignMatrix, DirectSum
ConstraintMatrix
DesignMatrix
DirectSum
a <- matrix(1:12,3,4) DirectSum(a) #returns a DirectSum(a,a) #returns direct sum of a and a DirectSum(a,a,a) #returns direct sum of a, a and a
Run the code above in your browser using DataLab