Category Archives: Arrays

Numpy where and split, and py_Numpy update

Posted on 30/09/2025 by dougaj4

The py_Numpy spreadsheet and associated code has been updated, with two new functions, links to the Numpy on-line help updated, and updates to sorting and polynomial functions. The updated code and spreadsheet can be downloaded from: Updated Numpy files included … Continue reading →

Posted in Arrays, Excel, Link to dll, Link to Python, PyXLL, UDFs | Tagged , , , , , , | 1 Comment

Random numbers, palindromes and Numpy update

Posted on 09/06/2025 by dougaj4

This post looks at some of the options for generating random numbers in Excel and Python. The code and example spreadsheets can be downloaded from: Updated Numpy files at: py_SciPy.zipCode added to the Pandigital files at: Pandigitals.zip The py_SciPy download … Continue reading →

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

Pandigital sums and Python permutations and combinations

Posted on 13/04/2025 by dougaj4

The New Scientist brain twister from last weeks edition has several problems involving pandigital sums, which are additions that use each of the digits from 0 to 9 exactly once, and with no number within the sum that starts with … Continue reading →

Posted in Arrays, Computing - general, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs, VBA | Tagged , , , , , , , | Leave a comment

Scipy update and Linalgfuncs speed check

Posted on 16/12/2024 by dougaj4

I have updated the Scipy code to remove repeated loading of the Numpy code, and to fix a number of other warnings from the pyxll log file. I have also updated the speed check of the various linear algebra solvers, … Continue reading →

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

Installing 3DFrame-py

Posted on 08/11/2024 by dougaj4

Updated 1st Feb 2025. As mentioned in the previous post, the installation process for the 3DFrame-py spreadsheet has changed with the new version. Also there have been some significant changes to the code to fix installation problems. Updated files are … Continue reading →

Posted in Arrays, Beam Bending, Excel, Finite Element Analysis, Frame Analysis, Link to Python, Newton, NumPy and SciPy, PyXLL, Strand7, UDFs | Tagged , , , , , , , , , , , , | 4 Comments