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Submat |
Syntax |
Submat(M:LIST or MAT,R:LIST of INT,C:LIST of INT):MAT |
Summary |
submatrix |
Description |
This function returns the submatrix of M formed by the rows listed in R and the columns listed in C. If M is a list, it is interpreted as a matrix in the natural way. |
Example |
M := Mat([[1,2,3,4,5],[6,7,8,9,10],[11,12,13,14,15]]); Submat(M,[1,3],3..5); Mat[ [3, 4, 5], [13, 14, 15] ] ------------------------------- L := [[1,2,3],[4,5,6]]; Submat(L,[2],[1,3]); Mat[ [4, 6] ] ------------------------------- |
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