25 lines
525 B
Matlab
25 lines
525 B
Matlab
% generate data:
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x = randn(1, 100000);
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% histogram:
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[h,b] = hist(x, 100);
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% normalize:
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bs = b(2)-b(1);
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h = h/sum(h)/bs;
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% plot:
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bar(b, h);
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xlabel('x');
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% median, quartile:
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q = quartiles(x);
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%q = quantile(x, [0.25, 0.5, 0.75 ]);
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% plot:
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hold on;
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bar(b(b<q(1)), h(b<q(1)), 'FaceColor', [0.5 0 0.5]);
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bar(b((b>=q(1)) & (b<q(2))), h((b>=q(1)) & (b<q(2))), 'FaceColor', [0.9 0 0]);
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bar(b((b>=q(2)) & (b<q(3))), h((b>=q(2)) & (b<q(3))), 'FaceColor', [0 0 0.9]);
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bar(b(b>=q(3)), h(b>=q(3)), 'FaceColor', [0.5 0 0.5]);
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hold off;
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