Category Archives: UDFs

Latex Maths Text in Excel

Posted on 27/11/2022 by dougaj4

There have been many posts here looking at alternative ways of working with functions entered as text on a spreadsheet, and working with units, most recently here. One drawback with this approach is that text in an Excel cell must … Continue reading →

Posted in Excel, Link to Python, Maths, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , , , , , , | Leave a comment

RC Design Functions 9.03; compression strut angle adjustment

Posted on 11/11/2022 by dougaj4

The RC Design Functions spreadsheet has now been updated to Version 9.03, and is available for free download from: RC Design Functions9.zip The new version includes a number of corrections to the calculation of beam shear and torsion capacity to … Continue reading →

Posted in Beam Bending, Concrete, Excel, Newton, UDFs, VBA | Tagged , , , , , , , , | 2 Comments

Linking to Python help from Excel

Posted on 06/11/2022 by dougaj4

The py_Numpy spreadsheet presented in the previous post has been updated: The new version can be downloaded from: py_Numpy.zip As before, the pyxll add-in is required for the connection from Excel to Python. All the available functions are listed on … Continue reading →

Posted in Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , , | Leave a comment

Calling Numpy polynomial functions from Excel

Posted on 31/10/2022 by dougaj4

The Numpy polynomial related function discussed in recent posts can now be downloaded from: py_Numpy.zip The download file includes Python code and a sample spreadsheet. Required installed software is Python, Numba and pyxll to call the code from Excel. Some … Continue reading →

Posted in Curve fitting, Excel, Link to Python, Maths, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , | 1 Comment

Solving cubic equations – background and timing

Posted on 25/10/2022 by dougaj4

For more information on the polynomial functions, including quartic and higher order solvers, see: Solving Quadratic, Cubic, Quartic and higher order equations; examples Re-reading the Wikipedia article on solving cubic equations, I noticed that the trigonometrical solution for finding 3 real … Continue reading →

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