Category Archives: Charts

Flipping Coin Problems

Posted on 15/09/2011 by dougaj4

At Daily Dose of Excel Dick K. looks at a VBA solution to this problem: Problem description: Take a stack of coins all heads up. Upturn the topmost coin, place back on the stack and then proceed: take the top 2 … Continue reading →

Posted in Charts, Excel, VBA | Tagged , , | 2 Comments

Alternative IP and Rotations

Posted on 11/04/2011 by dougaj4

In response to the 3D Intersections and PView Function posts Lori Miller has sent me two very elegant alternative ways of achieving similar results. The first is an on-spreadsheet solution to the intersection of two lines, using the LinEst function: Note … Continue reading →

Posted in Arrays, Charts, Charts, Coordinate Geometry, Excel | Tagged , , , | Leave a comment

PView Function

Posted on 31/03/2011 by dougaj4

As promised in the previous post, here are further details of the PView User Defined Function (UDF), included in the IP2 spreadsheet, which can be downloaded (including full open source code) from IP2.ZIP. The PView UDF works by multiplying the 3D … Continue reading →

Posted in Arrays, Charts, Charts, Coordinate Geometry, Drawing, Excel, Maths, UDFs, VBA | Tagged , , , , , , | 3 Comments

Charts for discussion

Posted on 24/02/2011 by dougaj4

See the comment from Georg Ströhlein under 2D Spline Interpolation with ALGLIB Here are the charts referred to:

Posted in Charts, Excel, Maths, Newton | Tagged , | 1 Comment

Fitting high order polynomials

Posted on 04/02/2011 by dougaj4

This post is a follow up to Using LINEST for non-linear curve fitting and the following comments from Scott Rogers and Lori Miller.  Scott found that he was getting different results from Linest and the xy chart trend line for polynomials of … Continue reading →

Posted in AlgLib, Charts, Excel, Maths, Newton, UDFs, VBA | Tagged , , , , , , , , | 31 Comments