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Fractals, Chaos, and Control Systems on Rails

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Control Systems 102: GNC, Navigation

Posted by Harry Seldon on April 27, 2009

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Control Systems 102: GNC, Guidance, Navigation and Control, Introduction

Posted by Harry Seldon on April 27, 2009

Guidance, Navigation and Control are often together. It makes perfect sense because all three of them depend on control theory and because they are the components of the software part of a Control System. But do you clearly know the differences between Guidance, Navigation and Control? I am going to explain them taking the example of an aircraft. In future posts I will take other examples such as a company, a country government or the go game. This series of posts is a follow up of Control Systems 101.

GNC

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Stacked bar chart with Rails and Open Flash Chart

Posted by Harry Seldon on April 20, 2009

Consequently to questions about the stacked bar charts, I have added an example to the OFC test app. Once again this example is a translation of the original example from Teethgrinder. However, this time there are indeed a few catches.

See the live example of the stacked bar chart here

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How to draw Mandelbrot's fractal with Rails and Open Flash Chart?

Posted by Harry Seldon on April 18, 2009

Mandelbrot set

Let us draw the Mandelbrot set with OFC. The point is to make a new example of use of OFC and it is also to have some fun with the so interesting fractal theory. To see how fashionable it is, read this post: Good news from the combat against the crisis. This post is highly inspired from this nice French page about the Mandelbrot set. I am using the algorithm given there.

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