CovMat.Design           covariance matrix for the multivariate normal
                        distributed variables
blockMatrixDiagonal     diagonal block matrix
calcPower.SWD           Power calculation within stepped wedge design
                        model by Hussey et.al or Heo&Kim
completeDataDesignMatrix
                        Design matrix for complete data within design
designMatrix            Design matrix for SWD model
implemMatrix.SWD        Design matrix for SWD model under a grade of
                        intervention implementation pattern
sampleData              Sampling Response of individuals within a SWD
                        model
