MatPy-0.3.1 released

Huaiyu Zhu hzhu at yahoo.com
Mon Sep 18 09:43:57 CEST 2000


                  MatPy 0.3.1 is released
            Huaiyu Zhu <hzhu at users.sourceforge.net>
                GNU Public License, version 2

What is it?
   MatPy is a python package that provides MatLab-like interface for linear
   algebra and plotting wrapped around the Numeric, Gnuplot and SpecialFuncs
   packages.  The expressions involving matrices and vectors resemble
   written mathematics.

Where to get it?
    Home:     http://MatPy.sourceforge.net/
    Download: http://download.sourceforge.net/MatPy/
    Project:  http://sourceforge.net/projects/MatPy

What is new?

Version 0.3.1 has several enhancements and bug fixes.

* The plotting interface has several enhancements:
  - Automatic and manual setting of axes.  
  - Placing of text on graph.
  - adds holdon and holdoff for several plot commands working on one figure.
  - scaled histogram.
  - gplot.py has a self test demonstrating line and symbol choices.  (Please
    let me know your opinion on the syntax.)

  See also tests/test_kalman.py for application examples.

* A patch from Greg Lielens against Python 2.0b1 for ~op style operators
  allows the use of ~+ for elementwise add, etc.  See Misc/index.html for
  details, and Misc/test_t_op.py and Misc/test_elem.py for examples.

  The augmented assignment operator names are changed to correspond to the
  official name in Python 2.0b1

* A module DynSys/kalman.py is added that implements a version of Kalman
  filter for linear systems.  See tests/test_kalman.py for examples.

* There are several major bug fixes:
  - MatPy.Stats.distrib.gamma.rand
  - The __cmp__ probem for != is fixed
  - The functions rows and cols now works on vectors.

* The module interact.py is a simpler and more robust substitute of the
  matpy console.  It has matlab like interface, such as help, demo, lookfor,
  names (corresponds to matlab command functions).

* Miscellenious issues:
  - Add missing rand methods to discrete distributions
  - Improved or added: Matrix_cr, max, min, gt, ge, lt, le, eq, find, any,
    all. triu, tril.

-- 
Huaiyu Zhu                       hzhu at users.sourceforge.net
Matrix for Python Project        http://MatPy.sourceforge.net 



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