Lissajous Curves

Antonio Ferreras
Sat Aug 23 21:38:46 2014

COURSERA: Developing Data Products

A tool to display pretty Lissajous curves
Practice with shiny environment, different input gadgets
- Especially use the timer, to achive a sense of movement
Get the hang of the plot function, and how tha pparence can be change tunning the different parameters
Have fun!

A Lissajous Curve is a system of parametric equations:

t=c(0:200)/200.; w1<-2; w2<-7; phi<-pi/8
x<-sin(2*pi*w1*t); y<-sin(2*pi*w2*t + phi)
plot(x,y,type="o",col="blue")

plot of chunk unnamed-chunk-1

Several parameters can be changed in the plot
- Type: dots, line, both, histogram, step (try this one!)
- Character of the dot, relative size, color
- Type of the line, color
One can select the frecuencies of the two movements (both are integers to get pretty displays)
- w1 - for the x axis
- w2 - for the y-axis
The dephase (phi) is increased automatically to get a sense of movement

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