python-qwt
==========

    Purpose and Motivation

      The ``python-qwt`` project was initiated to solve -at least temporarily- 
      the obsolescence issue of `PyQwt` (the Python-Qwt C++ bindings library) 
      which is no longer maintained. The idea was to translate the original 
      Qwt C++ code to Python and then to optimize some parts of the code by 
      writing new modules based on NumPy and other libraries.
      
      The ``python-qwt`` package consists of a single Python package named 
      `qwt` and of a few other files (examples, doc, ...).

    Copyrights

      Main code base
        Copyright (c) 2002 Uwe Rathmann, for the original Qwt C++ code
        Copyright (c) 2015 Pierre Raybaut, for the Qwt C++ to Python 
        translation and optimization
        Copyright (c) 2015 Pierre Raybaut, for the python-qwt specific and 
        exclusive Python material

      PyQt, PySide and Python2/Python3 compatibility modules
        Copyright (c) 2009-2013 Pierre Raybaut
        Copyright (c) 2013-2015 The Spyder Development Team

      Some examples
        Copyright (C) 2003-2009 Gerard Vermeulen, for the original PyQwt code
        Copyright (c) 2015 Pierre Raybaut, for the PyQt5/PySide port and 
        further developments (e.g. ported to python-qwt API)

    License

      The `qwt` Python package was partly (>95%) translated from Qwt C++ 
      library: the associated code is distributed under the terms of the LGPL 
      license. The rest of the code was either wrote from scratch or strongly 
      inspired from MIT licensed third-party software.
      See included LICENSE file for more details about licensing terms.

    Overview

      The `qwt` package is a pure Python implementation of Qwt C++ library with
      the following limitations.

      The following `Qwt` classes won't be reimplemented in `qwt` because most 
      powerful features already exist in `guiqwt`:
        - QwtPlotZoomer
        - QwtCounter
        - QwtEventPattern
        - QwtPicker
        - QwtPlotPicker

      QwtClipper is not implemented yet (and it will probably be very difficult
      or impossible to implement it in pure Python without performance issues).
      As a consequence, when zooming in a plot curve, the entire curve is still
      painted (in other words, when working with large amount of data, there is
      no performance gain when zooming in).

    Dependencies
    
        Requirements
            Python >=2.6 or Python >=3.0
            PyQt4 >=4.4 or PyQt5 >= 5.5
            NumPy >= 1.5

    Installation
    
        From the source package:
            python setup.py install