Category Archives: PyXLL

Computing and plotting the Mandelbrot set in Excel …

Posted on 07/12/2021 by dougaj4

… with Python, Numba and pyxll. As promised in the previous post, this post will look at alternative procedures for calculating and plotting the Mandelbrot set with Python based code. The spreadsheet presented here and the associated Python code may … Continue reading →

Posted in Charts, Charts, Excel, Link to Python, Maths, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , , , | 1 Comment

Animations from VBA

Posted on 28/11/2021 by dougaj4

A convenient way to create an animation in Excel is to create on-sheet formulas or user defined functions to generate the required data, then use VBA to iterate through the range of input values so that the chart or image … Continue reading →

Posted in Animation, Excel, Link to Python, Maths, Newton, PyXLL, UDFs, VBA | Tagged , , , , , | 1 Comment

Using Matplotlib from Excel with pyxll

Posted on 04/11/2021 by dougaj4

The pyxll documentation has many examples of plotting in Excel using Matplotlib and other packages, but I find the multiple options confusing and hard to follow, so this post works through the examples in the Matplotlib Users Guide tutorial. The … Continue reading →

Posted in Charts, Charts, Drawing, Excel, Link to Python, PyXLL, UDFs | Tagged , , , , , , | 1 Comment

Installing PyPardiso

Posted on 24/10/2021 by dougaj4

Update 5th June 2022: The PyPardiso package may now be installed simply with pip (see Installing PyPardiso and speed of Scipy spsolve): Install the MKL library: pip install mkl Install PyPardiso: pip install pypardiso The PyPardiso package provides an interface to … Continue reading →

Posted in Excel, Finite Element Analysis, Frame Analysis, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , , | 1 Comment

Making Finite Element Analysis go faster – Update and PyPardiso

Posted on 17/10/2021 by dougaj4

The previous post on this topic looked at the performance of alternative Scipy sparse equation solvers. This post updates those results with the current Scipy version (1.7.1), with very different results. It also compares the Scipy solver performance with the … Continue reading →

Posted in Arrays, Excel, Finite Element Analysis, Frame Analysis, Link to Python, Newton, NumPy and SciPy, PyXLL | Tagged , , , , , , | 5 Comments