Excel Virtually Global
https://excelvirtuallyglobal.com/ Tue 21 July to Thu 23 July 2020 Microsoft’s Most Valuable Professionals, or MVPs, are technology experts who passionately share their knowledge with the community....
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Finding VBA Bottlenecks with VBA Profiler
When you are faced with slow-running or complex VBA projects it can be very helpful to have a tool that allows you to time the individual parts of your code or trace the execution path as event-driven...
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Short-circuiting Excel Formulas: IF, CHOOSE, IFS and SWITCH
What is formula short-circuiting? Short-circuiting occurs in Excel formulas when an IF statement only evaluates the True part of the IF and skips the False part of the IF. For example in this formula:...
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Short-circuiting in Array Formulas
The previous post demonstrated that IF and CHOOSE short-circuit but IFS and SWITCH do not. But following up a hint from Bill Wu that IF behaves differently in array formulas I decided to check whether...
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Excel Screen-updating Performance Comparison.
The time that Excel takes to refresh the screen display can be a significant factor in overall processing speed. Things that affect screen updating Time Excel only updates the visible part of the...
View ArticleOnly Calculating the Active Workbook
When you have more than one workbook open Excel has always recalculated all of the workbooks at each recalculation. That can be very painful if one or more of the workbooks are slow to calculate. Now...
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Manual Calculation No Longer Viral!
Excel has 3 basic calculation modes: Automatic, Manual and Automatic except Tables. But an Excel session can currently only have one Calculation mode (unless you are using FastExcel which allows open...
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Python in Excel: Round-Tripping Gotchas
Python is a full-blown programming language and so supports a rich variety of datatypes.So what happens when you move data from Excel to Python and back to Excel (Round-Trip)? Excel Datatypes It is...
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Python in Excel: PY Calculation, Globals & Co-Volatility
Python Calculation Python in Excel calculates all the PY cells in a workbook sheet by sheet, and row by row, starting at the top left PY cell. If you break this calculation sequence rule, by for...
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Python in Excel: How do Excel and Python Formulas Work Together?
In the previous post I showed how Python and Excel calculation methods are completely different: Python calculates Left-to-Right and Top-to-Bottom, ignoring dependencies, and when a PY calculates then...
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Python in Excel: Controlling Python Calculation
Because Python calculations can be slow it is worth looking at ways of controlling Python calculation. Partial Calculation The calculation setting that used to be called “Automatic except Data Tables”...
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Python in Excel: Python User Defined Functions
This post explores using Python in Excel to create Python User Defined Functions. The example used is a function to calculate Gini coefficients (see...
View ArticleSheet Calculate Change
Recent builds of Excel 365 (version 2308 onwards) have introduced a change to the way Sheet Calculate (Shift-F9) works. Previously Sheet Calculate did a recalculate of all changed and volatile cells...
View ArticleVBA Corruption Registry Fix
There seem to be more cases recently where the VBA in a workbook gets corrupted and is removed when the workbook is reopened. Circumstances Nobody seems to know exactly why this happens but there...
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