PyQwt

If you're in need of a comprehensive tool to plot data with Numerical Python and PyQt, you can't go wrong with PyQwt. This software is essentially a set of Python bindings for the Qwt C++ class library which provides various widgets to display and control bounded or unbounded floating point values in the form of a 2-dimensional plot. This makes it ideal for scientists and engineers who require accuracy and precision in their work.

One of the core strengths of PyQwt is how it addresses the challenge of integrating PyQt, Qwt, Qt, the Numerical Python extensions or SciPy in a GUI Python application or in an interactive Python session. This means that users don't have to worry about compatibility issues, and can instead focus solely on their work. It is recommended to use PyQwt alongside NumPy, numarray, Numeric or any combination of those packages. With these extensions, Python becomes an ideal programming language for numerical computing and experimentation.

Overall, if you're seeking a powerful tool to help you plot data, PyQwt is a solid choice. By harnessing the power of Python and the Numerical extensions, it can hold its own against specialized tools such as MatLab and IDL. So, if you're ready to take your work to the next level, give PyQwt a try!