Coloring the lines in a a graph

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Bob Choy
Bob Choy 2012-11-18
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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回答（1 个）

Image Analyst
Image Analyst 2012-11-18
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
  2 个评论
Bob Choy
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
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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