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Category Archives: Newton
A Numpy trap – correction
In my post of 30th May this year (here) I said that: As a check that the functions were working correctly, the Python functions were modified to return the sum of the largest array in the first row, revealing that … Continue reading
Posted in Arrays, Excel, Link to Python, NumPy and SciPy, PyXLL, UDFs
Tagged arange data limit, int32, int64, Numpy, Numpy bug, Python
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ULS Design Functions 2.13
Update 17 May 2022: Following discussion on 10-11 May 22 the download file has been updated to version 2.15, fixing problems with the interaction diagram with a rectangular stress block under high axial loads. I have uploaded another update to … Continue reading
Posted in Concrete, Excel, Newton, UDFs, VBA
Tagged AS 3600, AS 5100, Excel, Newton, non-rectangular concrete sections, Parabolic stress block, UDF, ULS design of concrete, VBA
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Making Finite Element Analysis go faster …
… with Numba and Scipy sparse matrix functions. As promised in the previous post in this series, I will be looking at speeding up the formation and solving of matrix functions for the analysis of structural frames, using Excel and … Continue reading
Posted in Arrays, Excel, Finite Element Analysis, Frame Analysis, Link to Python, NumPy and SciPy, PyXLL
Tagged Excel, Finite Element Analysis, Iterative solvers, Numba, Numpy, Python, PyXLL, SciPy, sparse matrices
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A Very Short Article
I have previously written of Boris Peon’s very short proof that Hinchcliffe’s Rule is true (but only if it is false): Is Hinchliffe’s Rule True? … I have now been told of an even shorter scientific paper, which can be found … Continue reading
Using Numba with Excel and pyxll …
… and a Numpy trap. I last looked at using the just-in-time compiler Numba with Python some time ago (Two Timers), but I was prompted to take another look by an article in Medium that claimed Python Can Be Faster … Continue reading
Posted in Arrays, Excel, Link to Python, NumPy and SciPy, PyXLL, UDFs, VBA
Tagged Excel, Just-in-time, Numba, Numpy, Numpy bug, Python, timers, VBA
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