The ActiveX Spin Button tutorial - VBA tricks for Excel Animation

>. This tutorial brings briefly introduces an older airplane/Ninja cat animation, then it shows how to flip a logic (Boolean) variable using the operator “Not”. Most of the tutorial however, is centered toward the Active X control button in Excel animation and the associated macro. It shows how to create and customize this button, then it shows how to introduceContinue Reading

This is the second post on Excel speed. This has serious implications in creating usable Excel animations. The first part benchmarked the calculation speed of Excel 2003 versus Excel 2007 for various size arrays of formulas. This part analyzes the effect of formula complexity on the spreadsheet speed. About the speed of animated models in MS Excel – part #2Continue Reading

This post considers several aspects about improving the speed of spreadsheets in both MS Excel 2003 and 2007. It has significant effects on animations in MS Excel. In this first part, a “stopwatch” macro is described which, when incorporated in any of calculation loop, can measure the frequency your loop is executed. In this first part of the tutorial theContinue Reading

The first macro created in this section of the tutorial improves on the previously developed macro by correcting the up-down orientation of the shape, referencing the shape position to the coordinate of the first drawn point and closing the shape by repeating the coordinates of the first point at the end of the table. A last macro is then created whichContinue Reading

Using autoshape freeforms is a very easy way to duplicate object outlines from pictures. It is convenient to create a freeform and once created, its vertices (points) can be edited with without difficulty. Aditional points can be inserted and others can be deleted. This is a tutorial about a series of macros which allow the extraction of freeform vertex coordiantes to a worksheetContinue Reading

This tutorial will introduce the reader to creating simple drawings in Excel by using the “Freeform” auto shape. Later on, we will be able to convert this data in x-y-z vertex information for various models by using a macro. [sociallocker][/sociallocker] Drawing in Excel – part #1 – an introduction tocreating freeform type autoshapes – On this blog we will soon need toContinue Reading

Reach out for your 3D goggles because this is a representation of the Cosmos through the eyes of a 5-year old. The model displays a few objects at various depths and move two of them back and forth on a chart to demonstrate the stereoscopic effect. Though very simplistic it is an excellent example of anaglyph stereoscopy in action showing youContinue Reading

This brief tutorial explains how to calculate the solution vector of a system of linear equations using the Excel spreadsheet function MINVERSE() which calculate the inverse of a matrix. [sociallocker][/sociallocker] Solving linear systems of equations in Excel – the easy way by George Lungu – This is a tutorial showing an easy and convenient method of solving moderate size systemsContinue Reading

This is a brief tutorial showing how to calculate the determinant of a matrix and the inverse of a matrix using two special spreadsheet functions MDETERM() and MINVERSE(). [sociallocker][/sociallocker] MDETERM() & MINVERSE() – two important Excel spreadsheet functions for matrix manipulations by George Lungu – Using Excel built-in matrix operation functions might improve calculation efficiency but it definitely makes modelContinue Reading