A submatrix of a polynomial matrix
Retains or delets the i-th rows and the j-th column,
depending of the sign of these indices.
pMsub(pm, i, j)
pm |
a polynomial matrix |
i |
the number of rows to retain or delete |
j |
the number of columns to retain or delete |
If the row or column number is NULL, that means
all elements from the given columns or rows respectively.
If j is not given, that means a symmetric submatrix.
A polynomial matrix which is a submatrix of
the given matrix in ‘polyMdlist’ format.
A <- polyMgen.a(3,4,1:24,degree=1) A pMsub(A, 2, 3) pMsub(A, 1,NULL) pMsub(A, NULL, 3) pMsub(A, 1:2, 2:4) pMsub(A, -3, 2:5) pMsub(A, 1:2) # clean up # rm(A)
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