On 22.02.2008, at 01:10, Alan G Isaac wrote: > Someone once pointed out on this list that one might > consider a matrix to be a container of 1d vectors. For NumPy, > however, it is natural that it be a container of 1d arrays. > (See the discussion for the distinction.)
If I were to design a Pythonic implementation of the mathematical concept of a matrix, I'd implement three classes: Matrix, ColumnVector, and RowVector. It would work like this: m = Matrix([[1, 2], [3, 4]]) m[0, :] --> ColumnVector([1, 3]) m[:, 0] --> RowVector([1, 2]) m[0,0] --> 1 # scalar m.shape --> (2, 2) m[0].shape --> (2,) However, the matrix implementation in Numeric was inspired by Matlab, where everything is a matrix. But as I said before, Python is not Matlab. Konrad. _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
