[Matrix-SIG] Syntactic sugar for constructing arrays

[Harold L. Weaver]

Check out OMatrix, http://www.omatrix.com .  I think it may be a Python application, and
there is a free trial version which is not particularly crippled.

- Hal


>   1. RE: Syntactic sugar for constructing arrays (Yoon, Hoon (CICG - NY Program Trading))
>
>   ------------------------------------------------------------------------
>
> Subject: RE: [Matrix-SIG] Syntactic sugar for constructing arrays
> Date: Mon, 12 Oct 1998 09:13:16 -0400
> From: "Yoon, Hoon (CICG - NY Program Trading)" <HYoon@exchange.ml.com>
> CC: matrix-sig@python.org
>
> Hi,
>
>   I think there was a long discussion on a very similar issue proposed by
> David Ascher. Please read that. You should get a clearer picture of Konrad's
> point. Look in David's Starship site and look for keywords in News Archive.
>   Hack, I love to see:
> A'  (transpose)
> A .* B (dotproduct)
> A > B (greater(A,B))
> A^2    (A**2)
> A[ [1,2,13], [2,9] ] = NA
> dataframes (Splus)
> standard NA (msg values)
>   This will make Python on par with Gauss, Splus, Mathlab, etc...
> The reason I am trying to do more on Python is still because the data
> manipulation (which is about 70%+ of my work) is much much easier on Python.
> I can put many things in production without using bulky Stat packages and
> still have speed on C on matricies. So, I am happy enough.
>
> Hoon,