Category Archives: Excel

VBA polynomial functions update

Posted on 29/06/2026 by dougaj4

Following several comments at an old post I have made updates to the Polynomial spreadsheet. The new files can be downloaded from: Polynomial.zip The changes are: New functions returning real roots only: Updated SolvePoly and SolvePolyR: SolvePoly with an array … Continue reading →

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

Passing 3D arrays to Excel with Python and pyxll

Posted on 18/06/2026 by dougaj4

The previous post looked at options for displaying 1D or 2D arrays in Excel. This post will look at passing 3D arrays from Python to Excel as a cache object, using pyxll, and how to extract selected data from the … Continue reading →

Posted in Arrays, Excel, Link to Python, Newton, PyXLL, UDFs | Tagged , , , , , | Leave a comment

Dynamic array update and the @ operator

Posted on 11/06/2026 by dougaj4

Many of the user defined functions (UDF’s) presented in this blog return an array rather than a single value. Options for displaying arrays in Excel have changed significantly in recent years and this post looks at the most efficient ways … Continue reading →

Posted in Arrays, Excel, Link to Python, PyXLL, UDFs, VBA | Tagged , , , , , , , , | 1 Comment

Monte Carlo simulation with Excel and Python

Posted on 31/05/2026 by dougaj4

The pyxll blog has a post from last year on Monte Carlo Simulations in Excel with Python, with examples and full code going from the simplest implementation to more refined code allowing all the calculations to be set up on … Continue reading →

Posted in Beam Bending, Concrete, Excel, Link to Python, Maths, Newton, NumPy and SciPy, UDFs | Tagged , , , , , , , | Leave a comment

FeedSpot

Posted on 24/05/2026 by dougaj4

Feedspot is a blog database with a huge list of different categories, each with listings of the best blogs, including: 60 Best Excel Blogs to Follow in 2026 with a wide range of blogs, including: For a complete list of … Continue reading →

Posted in Computing - general, Excel | Tagged , , | Leave a comment