On Wed, Apr 9, 2008 at 11:07 AM, Stéfan van der Walt

On 09/04/2008, Andreas Klöckner

wrote: On Mittwoch 26 März 2008, Charles R Harris wrote:

The docstring is incorrect. The Vandermonde matrix produced is compatible with numpy polynomials that also go from high to low powers. I would have done it the other way round, so index matched power, but that isn't how it is.

I've never seen the vector powers that way around in literature. Shouldn't we fix it to correspond to the (vast) majority of publications?

It would affect polyfit, where the powers correspond to the numpy polynomial coefficients. That can be fixed, and as far as I can determine that is the only numpy function that uses vander, but it might break some software out there in the wild. Maybe we can put it on the list for 1.1. I'd like to change numpy polynomials also, but that is probably a mod too far. Chuck