Author Archives: dougaj4

SectionProperties update

In late 2017 I posted Section Properties with MeshPY, including torsion and warping which looked at an Excel front end for Robbie van Leeuwen’s SectionProperties program, which provides facilities for calculation of section properties of complex shapes, including torsion and warping constants. … Continue reading

Posted in Charts, Excel, Finite Element Analysis, Link to Python, Newton, Numerical integration, NumPy and SciPy, PyXLL, Strand7 | Tagged , , , , | Leave a comment

Contour plots with Excel and Matplotlib – 2 

The procedures discussed in the previous post required the contour data to be arranged on a regular rectangular grid, with the data points listed in a 2D array. As far as I know there is no built in alternative in … Continue reading

Posted in Arrays, Charts, Excel, Finite Element Analysis, Link to Python, Newton, NumPy and SciPy, PyXLL, Strand7, UDFs | Tagged , , , , | Leave a comment

Contour plots with Excel and Matplotlib

Contour plots are widely used for a great variety of purposes, but facilities for producing them in Excel are very limited, and those that are provided are very well hidden. In this post I will look at some simple examples … Continue reading

Posted in Arrays, Charts, Charts, Excel, Finite Element Analysis, Link to Python, NumPy and SciPy, PyXLL, Strand7, UDFs | Tagged , , , , , | Leave a comment

Plotting Mandelbrot in Excel with Matplotlib

The functions used in the previous post generate an array of integers, the number of iterations for the function return value to exceed 2. This post looks in more detail at how this data can be plotted in Excel using … Continue reading

Posted in Charts, Charts, Drawing, Excel, Link to Python, Maths, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , , , | Leave a comment

Computing and plotting the Mandelbrot set in Excel …

… 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 , , , , , , , | Leave a comment