Author Archives: dougaj4

A Match Function Bug …

Posted on 08/10/2022 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 30/09/2022 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 , , , , , , | 4 Comments

Installing Python and pyxll from scratch

Posted on 26/09/2022 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 , , , , , , , , , , , , , , | 2 Comments

Australasian Engineering Heritage Conference 2022

Posted on 14/09/2022 by dougaj4

The Australasian Engineering Heritage Conference will be held at the Engineers Australia Sydney offices at 44 Market Street, Sydney on 12-13 October 2022. The theme of the conference is: Transport and Communications: Looking Forward – Looking Back‘. In addition to a wide … Continue reading →

Posted in Historic Bridges, Newton | Tagged | Leave a comment

RC Design Functions 9.02; DevLength function

Posted on 13/09/2022 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