Author Archives: dougaj4

The meaning of = in Python

In VBA, if you have an array named a and a variant named b, then the statement “b = a” creates a new array b with the same size and values as a.  If the values of either a or b are subsequently changed, the values of the … Continue reading

Posted in Arrays, Excel, Link to Python, NumPy and SciPy, UDFs, VBA | Tagged , , , , , , , , , | 2 Comments

ConBeamU 4.13

The continuous beam analysis spreadsheet, ConBeamU, is now up to version 4.13 with some minor bug-fixes, and the addition of a non-linear option for the BeamAct functions. See ConBeamU for more details of the functions available in the spreadsheet. Download … Continue reading

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

February Links

Two new links with valuable free resources: .net and office automation follies : including many advanced VBA resources.  Thanks to Alfred Vachris for the link. AET VBE Tools : Tools for the Visual Basic editor from Andrew Engwirda (via Daily Dose of … Continue reading

Posted in Excel, Link to dll, VBA | Tagged , , , | Leave a comment

ACO, Pekka Kuusisto, Sam Amidon, Pentangle and Wedding Dress

Murder and Redemption, the current ACO concert series, led by guest musical director Pekka Kuusisto and folk musician Sam Amidon, combines American and British folk songs with the works of Janáček and John Adams. Here Pekka Kuusisto talks of performing the … Continue reading

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Christy Moore sings Beeswing

Back in 2011 I posted a link to Richard Thompson’s song Beeswing, sung by The Little Unsaid.   That post still brings a trickle of visitors to his site, which led me to this version by Christy Moore: and Christy Moore’s … Continue reading

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Weighted Least Squares Regression, using Excel, VBA, Alglib and Python

Least squares linear regression in Excel is easy.  That’s what the Linest and Trend functions do.  That is, they find the coefficients of a straight line (or higher dimension shape) so that the sum of the squares of the distances of … Continue reading

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

Debugging with xlwings and PyCharm

The xlwings documentation covers de-bugging, but it is very brief and it took me some time to get everything working, so this article covers the process in a bit more detail.  The details are affected by the editor being used, … Continue reading

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