Items tagged with non-square

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Hi

I would like to extract the Anew matrix from the old matrix A. such that each row from Anew matrix has a square form of old matrix i.e all number from each row in the Anew form a square in my old matrix A ...

Is there any loop to determie  the Anew matrix in general  case

Such that A new

A := Matrix([[1, 2, 3, 4, 5, 6, 7, 8, 9, 10], [11, 12, 13, 14, 15, 16, 17, 18, 19, 20], [21, 22, 23, 24, 25, 26, 27, 28, 29, 30], [31, 32, 33, 34, 35, 36, 37, 38, 39, 40], [41, 42, 43, 44, 45, 46, 47, 48, 49, 50]])

Anew = Matrix([[2, 13, 22, 11], [4, 15, 24, 13], [6, 17, 26, 15], [8, 19, 28, 17], [13, 24, 33, 22], [15, 26, 35, 24], [17, 28, 37, 26], [19, 30, 39, 28], [24, 35, 44, 33], [26, 37, 46, 35], [28, 39, 48, 37]])

Many thanks

Perhaps I am being daft, but to me the Physics package seems, quite surprisingly, to have trouble multiplying by a nonzero, non-square matrix. The test code

restart:
with(Physics):
Matrix(2,2,fill = 0) . Vector(2),
Matrix(2,2,fill = 1) . Vector(2),
Matrix(2,3,fill = 0) . Vector(3);
Matrix(2,3,fill = 1) . Vector(3);

produces the following output:

Error, (in Vector[column]) Matrix index out of range

i.e., the last expression cannot be evaluated; while the test code (where no loading of the Physics package is performed)

restart:
#with(Physics):
Matrix(2,2,fill = 0) . Vector(2),
Matrix(2,2,fill = 1) . Vector(2),
Matrix(2,3,fill = 0) . Vector(3),
Matrix(2,3,fill = 1) . Vector(3);

produces the following expected output:

PS: To be sure, I have from http://www.maplesoft.com/products/maple/features/physicsresearch.aspx downloaded the latest version (2014, March 19, 4:0 hours) of the Physics package for Maple 17 (the version I am running).

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