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Tag Archives: Excel
Plotting Mandelbrot
There are many sites discussing the Mandelbrot Set, but not many examples using VBA to plot the set in Excel, so here is my effort: The spreadsheet (including open source VBA code) may be downloaded from: Mandelbrot chart.zip Note that … Continue reading
Posted in Charts, Charts, Coordinate Geometry, Drawing, Excel, Maths, Newton, VBA
Tagged Charts, Excel, Mandelbrot Set, VBA
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Using conditional formatting with array formulas
A recent Quora question asked “How do I highlight the number closest to an initial number in a row in Excel?“. The answer by Bill Jelen provides a good example of using conditional formatting with an array formula: In my … Continue reading
Posted in Arrays, Excel
Tagged Array Formula, conditional formatting, Excel, Office Insider
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64 bit Excel and PtrSafe
Installing my Office 365 subscription on a new computer I discovered it had decided (without asking) to upgrade itself to the 64 bit version, which resulted in some of my spreadsheets not working on the new system. The main problem … Continue reading
Solving the Lagrangian Point equation for the Moon
This post was prompted by a recent question at Fitting high order polynomials, asking for Excel methods to solve the equations for the radius of the Moon’s Lagrangian Point 1. All the methods described in this post have been added to … Continue reading
Posted in Excel, Maths, Newton, UDFs, VBA
Tagged Excel, iterative solution, Lagrangian point, Newton, polynomial solution, UDFs, VBA
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ULS design of circular reinforced concrete columns
The RC Design Functions spreadsheet has been updated (to Version 8.04) with the addition of a CircU function for ULS design of circular reinforced concrete sections under combined bending and axial load. The new version, including full open-source code, may … Continue reading
