Unable to plot iterated function system

Question

Fue Xiong 2022-1-19

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1632210-unable-to-plot-iterated-function-system

编辑： Torsten 2022-1-19

I'm trying to plot an iterated function system based on the Barnsley Fern. The fractal is started at point (0,0) and generates new points by using 4 transformations. I received several errors and an empty graph. Any suggestions on how to go around this. I'm new to MATLAB and thanks for any help.

Errors

Graph

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Answer 1

Torsten 2022-1-19

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1632210-unable-to-plot-iterated-function-system#answer_877800

编辑：Torsten 2022-1-19

在 MATLAB Online 中打开

function Modern_Art
  A{1} = [1;2];
  n = 100;
  r = rand(100,1);
  for i=1:100
    if r(i)<0.01
        A{i+1} = [0 0;0 0.16]*A{i};
    elseif 0.01 <= r(i) && r(i) < 0.86
        A{i+1} = [0.85 0.04;-0.04 0.85]*A{i} + [0;1.6];
    elseif 0.86 <=r(i) && r(i) < 0.93
        A{i+1} = [0.2 -0.26;0.23 0.22]*A{i} + [0;1.6];
    elseif 0.93 <= r(i) && r(i) < 1
        A{i+1} = [-0.15 0.28;0.26 0.24]*A{i} + [0;0.44];
    end
  end
  A = cell2mat(A);
  plot(A(1,:),A(2,:))
end