Coloring the lines in a a graph

Question

Bob Choy 2012-11-18

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I have a graph with 18 horizontal lines, I need to first 6 lines to be colored magenta, the following 6 to be cyan and the last 6 to be red. Then I want to add a small label to that graph saying something like [0-6 = A], [6-12 = B] and [12-18 = C].

Is this possible?

Thank you.

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Answer 1

Image Analyst 2012-11-18

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Yes. Use the 'Color' option in line()

x1 = 0;
x2 = 20;
for y = 1 : 6
  line([x1 x2], [y y], 'Color', 'm');
  hold on;
end
for y = 7 : 12
  line([x1 x2], [y y], 'Color', 'c');
end
for y = 13 : 18
  line([x1 x2], [y y], 'Color', 'r');
end

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Bob Choy 2012-11-18

编辑：Bob Choy 2012-11-18

Can you please elaborate? More especifically, what should I be doing? What is x1 and x2?

Walter Roberson 2012-11-18

The above is fairly specific. line() is a MATLAB plotting call. Calling it with the parameter/value pairs shown will give you magenta or cyan or read lines.

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