Category Archives: Arrays

Python for VBA users – 5; Using built in numpy functions

Posted on 13/10/2013 by dougaj4

Previous Python Post In previous posts in this series I have looked at translating VBA functions to solve quadratic and cubic equations, but the Python numpy library has a polyroots function that will solve polynomials of any degree, and will … Continue reading →

Posted in Arrays, Excel, Link to Python, Maths, Newton, NumPy and SciPy, UDFs, VBA | Tagged , , , , , , , , , , , | 5 Comments

Python for VBA users – 4; Python data types

Posted on 05/10/2013 by dougaj4

Previous Python Post The basic range of data types in Python is quite simple, but by the time we have added additional types used in the numpy package, and translation of Excel data types into the Python equivalent the picture … Continue reading →

Posted in Arrays, Excel, Link to Python, NumPy and SciPy, UDFs, VBA | Tagged , , , , , , , | 5 Comments

Sorting with Python

Posted on 19/09/2013 by dougaj4

A previous post provided a VBA Sort function that could be used as a User Defined Function (UDF) to provide a sorted list on the spreadsheet, or called from another VBA routine to sort an array. I have just written a … Continue reading →

Posted in Arrays, Excel, Link to Python, UDFs | Tagged , , , , , | 5 Comments

Arrays vs Collections vs Dictionary Objects (and Dictionary help)

Posted on 29/08/2013 by dougaj4

A recent comment by Lori Miller at Daily Dose of Excel suggested that (for the particular application being discussed) the VBA Collection object was quicker than using scripting dictionaries.  Since I hardly ever use collections (other than the built-in ones), and … Continue reading →

Posted in Arrays, Excel, VBA | Tagged , , , , | 7 Comments

EvalA update and examples

Posted on 06/08/2013 by dougaj4

The EvalA User Defined Function (UDF) has been included in the Eval2 and Eval-Integration spreadsheets for some time, but was not documented.  That has now been fixed, and both spreadsheets can be downloaded from Eval2.Zip (including full open-source code). The … Continue reading →

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