Tag Archives: Excel

Pint, MPmath and implied units, working with Excel

Posted on 30/04/2022 by dougaj4

Spreadsheets linking to the Python Pint and MPmath libraries have been presented here before at: Units and solvers with Pint and Sympy mpmath for Excel I have now updated the spreadsheet to work with pyxll, and with some new functions and … Continue reading →

Posted in Concrete, Excel, Link to Python, Newton, PyXLL, UDFs | Tagged , , , , , , , , | 2 Comments

3D Matplotlib Plots in Excel

Posted on 17/04/2022 by dougaj4

As well as Excel, the code shown in this post requires current versions of Python, Numpy, Matplotlib, and pyxll. The required import statements at the head of the Python code are: The spreadsheets and Python code described below may be … Continue reading →

Posted in Charts, Charts, Coordinate Geometry, Drawing, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , , | 2 Comments

Python functools – cache and lru_cache

Posted on 01/04/2022 by dougaj4

Update 3rd April 2022: Following the comment from Larry Schuster I have modified the code so that the factorial0 function actually uses cache as intended, rather than lru_cache. I also added code to clear the cache after each timer run, … Continue reading →

Posted in Excel, Link to Python, PyXLL, UDFs | Tagged , , , , , , , | 3 Comments

More Matplotlib problems

Posted on 23/03/2022 by dougaj4

Following an upgrade to some Python libraries, I found that problems with plotting from Matplotlib causing Python to crash were recurring (previously reported here). When called from Excel with pyxll this was also causing instant crashes of Excel. I eventually … Continue reading →

Posted in Excel, Link to Python, PyXLL | Tagged , , , , , | 3 Comments

VBA procedures for the Numerical Analysis of Tabular Functions

Posted on 12/03/2022 by dougaj4

Long time on-line friend Alfred Vachris has recently been converting Fortran code developed through his working career into VBA: I had the opportunity to work at Grumman while going to Graduate School and they gave me a part-time job as … Continue reading →

Posted in Coordinate Geometry, Curve fitting, Excel, Fortran, Maths, Newton, UDFs, VBA | Tagged , , , , , , | 1 Comment