PyQwt

Version: 5.0.1 PyQwt is a set of Python bindings for the Qwt C++ class library.

It etends the Qt framework with widgets for scientific and engineering applications and provides a widget to plot 2-dimensional data and various widgets to display and control bounded or unbounded floating point values.
PyQwt addresses the problem of integrating PyQt, Qt, Qwt, NumPy and optionally SciPy. Look at the Command Line Interface (CLI) examples and the Graphical User Interface (GUI) examples to get an idea of what you can do with PyQwt.
It is highly recommended to use PyQwt with NumPy. NumPy extends the Python language with new data types to turn Python into an ideal language for numerical computing and experimentation. The beautiful general purpose programming language Python in combination with the NumPy and SciPy is more powerful than specialized tools like MatLab and IDL. The older unmaintained numerical Python extensions, numarray and Numeric, are still supported but not recommended.
PyQwt integrates nicely with the Qt Designer and the Eric integrated development environment. The FAQ explains why PyQt's closed source Black Adder interactive development environment cannot be used with PyQwt.