Author Archives: dougaj4

Speed of Scipy Linear Algebra Solvers

Posted on 14/06/2023 by dougaj4

The files presented in the recent post on Scipy Linear Algebra Solvers include a wide range of different solver types, with in some cases numerous sub-options, allowing the functions to be called from Excel, and greatly extending and speeding up … Continue reading →

Posted in Arrays, Excel, Finite Element Analysis, Frame Analysis, Link to dll, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , | 2 Comments

EngineeringPaper.xyz

Posted on 12/06/2023 by dougaj4

EngineeringPaper.xyz is a web app for engineering applications with free open-source code: EngineeringPaper.xyz is a web app for engineering calculations that handles unit conversion/checking automatically and also supports plotting, solving systems of equations, and documenting your calculations (see the official blog for … Continue reading →

Posted in Computing - general, Newton | Tagged , | Leave a comment

Pete Brown

Posted on 02/06/2023 by dougaj4

Peter Ronald Brown (25 December 1940 – 19 May 2023) was an English performance poet, lyricist, and singer best known for his collaborations with Cream and Jack Bruce. https://en.m.wikipedia.org/wiki/Pete_Brown I spent my last year of high school in England as a boarder, and the “upper … Continue reading →

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Scipy linear algebra functions in Excel

Posted on 30/05/2023 by dougaj4

The file pyLinAlgfuncs3.zip has open source Python code allowing the Scipy linear algebra functions to be called from Excel using the pyxll add-in. It also includes all the Python code to perform LU decomposition, as discussed in the previous post., … Continue reading →

Posted in Arrays, Excel, Finite Element Analysis, Frame Analysis, Link to Python, Maths, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , , | 2 Comments

LU Decomposition with Python and Scipy

Posted on 26/05/2023 by dougaj4

This post was prompted by a question at the Eng-Tips forum: LU Decomposition which asked why Mathcad was generating LU matrices different to those calculated from the basic theory. The short answer was that there is more than one way … Continue reading →

Posted in Excel, Finite Element Analysis, Link to Python, Maths, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , | 2 Comments