Author Archives: dougaj4

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

Tanh-Sinh Quadrature v. 5.03

Posted on 22/11/2021 by dougaj4

Following some recent comments Graeme Dennes has released the latest version the Tanh-Sinh Quadrature spreadsheet with some corrections to the test function documentation. The new file is located (as before) at: Tanh-Sinh Quadrature For more information on the last major release … Continue reading →

Posted in Excel, Maths, Newton, Numerical integration, UDFs, VBA | Tagged , , , | 5 Comments

Some new old songs

Posted on 14/11/2021 by dougaj4

Every so often I check YouTube to see what new old music has been posted, and today I found: Haitian Fight Song, here played by Danny Thompson in Norway in 1968 and Bert Jansch and Danny Thompson playing Thames Lighterman … Continue reading →

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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

… is so meta, even this acronym …

Posted on 29/10/2021 by dougaj4

Today it was announced that Facebook, the meta company that owns Facebook, was going to be renamed “Meta”, which reminded me of an xkcd episode from 10 years ago:

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