how do i shuffle my stimuli so a, b, c, d or e could be asked in any random order?

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Michael Davies 2018-1-6

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https://ww2.mathworks.cn/matlabcentral/answers/375868-how-do-i-shuffle-my-stimuli-so-a-b-c-d-or-e-could-be-asked-in-any-random-order

编辑： Walter Roberson 2018-1-6

Hello I am trying to use 'shuffle' to produce my stimuli randomly but have not been able to figure this out yet. Any help would be greatly appreciated!!

a = randperm(10, 5)-1
for k=1:length(a)
clf;text(0.5,0.5, num2str(a(k)),'FontSize',75);axis off;
pause(1)
clf; 
end
for x1 = randsample(a,1), pause(2)
   clf;text(0.5,0.5, num2str(x1),'Fontsize',75);axis off
  end
  pause(3)
  b = randperm(10, 4)-1
  for k=1:length(b) 
      clf;text(0.5,0.5, num2str(b(k)),'FontSize',75);axis off;
      pause(1)
      clf;
  end
  for x2 = randsample(b,1), pause(2)
      clf;text(0.5,0.5, num2str(x2),'FontSize',75);axis off;
  end
  pause(3)
  c = randperm(10, 3)-1
  for k=1:length(c)
      clf;text(0.5,0.5, num2str(c(k)),'FontSize',75);axis off;
      pause(1)
      clf;
  end
  for x3 = randsample(c,1), pause(2)
      clf;text(0.5,0.5, num2str(x3),'FontSize',75);axis off;
  end
  pause(3)
  d = randperm(10, 2)-1
  for k=1:length(d)
      clf;text(0.5,0.5, num2str(d(k)),'FontSize',75);axis off;
      pause(1)
      clf;
  end
  for x4 = randsample(d,1), pause(2)
      clf;text(0.5,0.5, num2str(x4),'FontSize',75);axis off;
  end
  pause(3)
  e = randperm(10, 1)-1
  for k=1:length(e)
      clf;text(0.5,0.5, num2str(e(k)),'FontSize',75);axis off;
      pause(1)
      clf;
  end
  for x5 = randsample(e,1), pause(2);
      clf;text(0.5,0.5, num2str(x5),'FontSize',75);axis off;
  end

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Stephen23 2018-1-6

编辑：Stephen23 2018-1-6

Copy-and-pasting code is a sign that you are doing something wrong. Use a loop instead.
Creating lots of sequential variables a, b, c, etc just makes your code more complex, and the data harder to work with.

You need to:

Put that data into one array (which could be numeric, cell , structure, table, etc) and then suddenly your task is much simpler because you can trivially use indexing.
use randperm and a loop to run that code with a random order of data.