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Tag Archives: Numpy
Solving cubic equations – background and timing
For more information on the polynomial functions, including quartic and higher order solvers, see: Solving Quadratic, Cubic, Quartic and higher order equations; examples Re-reading the Wikipedia article on solving cubic equations, I noticed that the trigonometrical solution for finding 3 real … Continue reading
Posted in Excel, Link to Python, Maths, Newton, NumPy and SciPy, PyXLL, UDFs, VBA
Tagged cubic equations, Excel, Numba, Numpy, Polynomials, Pyhon, PyXLL, Quartic equations, UDFs, VBA
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Working with Python polynomials from Excel
Python polynomial functions have several features that require manipulation of data passed from Excel: In Python polynomial coefficients are listed in order of increasing powers of x (a + bx + cx^2 …), but they are more usually listed with … Continue reading
Posted in Arrays, Excel, Link to Python, PyXLL, UDFs
Tagged complex numbers, Complex to real, Excel, Numpy, Polynomials, Python, PyXLL, Real to complex, Reversing arrays, UDFs
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Installing Python and pyxll from scratch
Updated 28th September 2022. Matplotlib latest version OK. I recently installed Python and pyxll (plus the required additional libraries) on a new computer, which raised a few problems with incompatible versions, so here is a summary of what worked (as … Continue reading
Posted in Animation, Arrays, Charts, Coordinate Geometry, Differential Equations, Excel, Finite Element Analysis, Link to Python, Maths, Newton, Numerical integration, NumPy and SciPy, Python Pandas, PyXLL, UDFs
Tagged Excel, installation, kaleido, MatPlotlib, mpmath, Numba, Numpy, Pint, plotly, PyPardiso, Python, PyXLL, SciPy, sectionproperties, Sympy
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Listing Python modules and getting help docs from Excel
Python functions include detailed help documentation but to access this you need the full path to the function, including the names of all code modules and submodules. This post looks at how this information can be found using Excel with … Continue reading
Posted in Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs
Tagged Excel, Function help, Getmembers, Numpy, Pkgutil, Python, PyXLL, SciPy
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More on Numba
Following my recent post Making Finite Element Analysis go faster … I have been having a closer look at the options in the Numba just-in-time compiler for improving the performance of Python code. The Numba docs include a series of short … Continue reading
Posted in Excel, Link to Python, NumPy and SciPy, PyXLL, UDFs
Tagged Excel, Faster python code, Numba, Numpy, Python, PyXLL, UDFs
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