can I copy a portion of a matrix, i.e. a generic minor of a matrix?
For instance, say A the N1xN2 float matrix, i would like to select its MxM minor that contains the element Aij (with j and i given) as its first element and to copy it in a different data structure, say B a matrix MxM.
Is there a special copy command that allows to do it in few lines, avoiding for cycles?
Thanks for any suggestions.