H

#### hi_roger

i know how to select a submatrix using the slice object in numpy. But

how can i select a submatrix

A[i1,i2,i3;j1,j2,j3] (elements in A on line i1,i2,i3 and column

j1,j2,j3 , and i1,i2,i3,j1,j2,j3 are all arbitrary numbers )

The submatrix must share data memory with original matrix.

Any one help? thank you