15 lines
780 B
Plaintext
15 lines
780 B
Plaintext
library(caTools) # external package providing write.gif function
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jet.colors <- colorRampPalette(c("#00007F", "blue", "#007FFF", "cyan", "#7FFF7F",
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"yellow", "#FF7F00", "red", "#7F0000"))
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m <- 1200 # define size
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C <- complex( real=rep(seq(-1.8,0.6, length.out=m), each=m ),
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imag=rep(seq(-1.2,1.2, length.out=m), m ) )
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C <- matrix(C,m,m) # reshape as square matrix of complex numbers
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Z <- 0 # initialize Z to zero
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X <- array(0, c(m,m,20)) # initialize output 3D array
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for (k in 1:20) { # loop with 20 iterations
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Z <- Z^2+C # the central difference equation
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X[,,k] <- exp(-abs(Z)) # capture results
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}
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write.gif(X, "Mandelbrot.gif", col=jet.colors, delay=100)
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