Tag Archives: Python

Python functions for rotation

Posted on 22/08/2025 by dougaj4

I have recently needed code to rotate 2D coordinates, either about the origin, or some specified other point, using pyxll to call the code from Excel. My first attempt was a direct translation of some VBA code, that also worked … Continue reading →

Posted in Coordinate Geometry, Excel, Link to Python, Maths, Newton, PyXLL | Tagged , , , , , , | Leave a comment

Evaluate and display definite integrals in Excel with Latex and Matplotlib

Posted on 09/08/2025 by dougaj4

The py_Evalu spreadsheet was last presented at Scipy Functions with Excel and pyxll 5 – Evaluate with Units and included the Plot_Math function, which converts a text string to Latex format, then uses Matplotlib to convert this to a graphic image, … Continue reading →

Posted in Excel, Link to Python, Maths, Newton, Numerical integration, PyXLL, UDFs | Tagged , , , , , , , , , , , , | Leave a comment

py_RC Elastic 1.04 and fatigue to AS 3600

Posted on 06/08/2025 by dougaj4

The py_RC Elastic spreadsheet (last discussed here) has been updated with a new function py_Fatigue3600, providing design for fatigue to the latest AS 3600 concrete structures code. The new spreadsheet and associated Python code can be downloaded from: py_RC Elastic.zip … Continue reading →

Posted in Concrete, Excel, Link to Python, Newton, PyXLL, UDFs | Tagged , , , , , , , , , , | 1 Comment

Plotting Carlyle’s Circle with Matplotlib in Excel

Posted on 25/07/2025 by dougaj4

Recently I happened to read of Carlyle’s Circle, which is a circle that has two intersection points with a parabola on the X axis. See the Wikipedia article for more details: https://en.wikipedia.org/wiki/Carlyle_circle This post looks at the options for plotting … Continue reading →

Posted in Charts, Drawing, Excel, Link to Python, Maths, Newton, PyXLL, UDFs | Tagged , , , , , , | Leave a comment

Upgrading plotly (to 6.9.1)

Posted on 19/07/2025 by dougaj4

Today I found that some of my plotly functions were not working, and re-loading the pyxll files returned the message “could not import PySide6.Qtgui pyside6”. Searching for this problem I found: After upgrading PySide6 gives error No module named ‘PySide6.QtWidgets’ … Continue reading →

Posted in Drawing, Excel, Link to Python, PyXLL | Tagged , , , , , , | Leave a comment