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The method of Virtual Elevation and all its variants are derived from Newton’s 2nd Law for linear motion, neglecting rotational inertia terms. Do those additional terms play a significant role in elevation-matching? Can we accurately measure the moment of inertia (MOI)? In this post, I’ll describe the terms and provide a [...] A recent discussion on the Wattage Training Forum got me to hack the VE code to quantify the difference between the exact and small-angle version of the VE calculation. The columns of the resulting CSV file are as follows: SAMPLE #: row index The final [...] I was looking at the convergence of the first version of VE and thinking, “this can’t be right…”. When it’s coded right, Newton-Raphson typically converges extremely well, or not at all. So looking at the code I realized I made a beginner mistake and used a one-sided numerical differentiation scheme: sub fy my $x [...] In trying to create a prototype for Golden Cheetah, I put together this perl script that I submit for your perusal. The script comes with the sample data used by Robert Chung in his recent post to the Wattage Forum, so it may look familiar to many of you. My aim was to match a known [...] |
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