How to plot specific graph

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Matlabbey
Matlabbey 2012-9-8
hello all
im trying to graph in a certain way and was hoping to learn how to do this. attatched is what im trying to do but not sure how to do it in matlab. thank you!!
http://imageshack.us/photo/my-images/684/graphyz.jpg/

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Image Analyst
Image Analyst 2012-9-8
x = 1:4;
y1 = [40 0 0 0];
y2 = [-28 0 0 0];
bar(x, y1, 'FaceColor', 'r');
hold on;
bar(x, y2, 'FaceColor', [.5 .5 .5]);
grid on;
  2 个评论
Matlabbey
Matlabbey 2012-9-8
hi! thanks for the response, but how do i make it so the bottom numbers are not negative? can i make that axis positive also? i'm not sure for the formatting. thank you!!
Image Analyst
Image Analyst 2012-9-8
You can reset the tick labels to be anything you want, for example you could take the absolute value and write them back out as positive. Look up tick labels in the help for examples.

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