Tag Archives: Excel

Working with Python polynomials from Excel

Posted on October 22, 2022 by dougaj4

Python polynomial functions have several features that require manipulation of data passed from Excel: I have written 3 short Python functions to deal with passing arrays of complex numbers from and to Excel, using pyxll, or within Python code to … Continue reading →

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

A Match Function Bug …

Posted on October 8, 2022 by dougaj4

… or at least, a non-intuitive feature of the MATCH function, that may give inconsistent results. This post is based on a discussion at EngTips. The problem under discussion was to find the number of the first and last rows … Continue reading →

Posted in Arrays, Excel | Tagged , , , | 3 Comments

3D plots with the latest Matplotlib

Posted on September 30, 2022 by dougaj4

Installing Python on a new computer, I found I had to downgrade Matplotlib to release 3.5.2 to get my 3D plotting functions to work. Further investigation found that the problem was the Axes3D function. Changing:     ax = axes3d.Axes3D(fig)to: … Continue reading →

Posted in Animation, Coordinate Geometry, Drawing, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , , | 2 Comments

Installing Python and pyxll from scratch

Posted on September 26, 2022 by dougaj4

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 , , , , , , , , , , , , , , | Leave a comment

RC Design Functions 9.02; DevLength function

Posted on September 13, 2022 by dougaj4

The RC Design Functions spreadsheet has now been updated to Version 9.02, and is available for free download from: RC Design Functions9.zip Changes in the new version include: The new DevLength function returns reinforcement development length to AS 3600, AS … Continue reading →

Posted in Beam Bending, Concrete, Excel, Newton, UDFs, VBA | Tagged , , , , , , , , , , | Leave a comment