Ploting same y axis with two colors
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Gökberk Kaya
on 23 Oct 2023
Commented: Dyuman Joshi
on 26 Oct 2023
Assuming there is matrix 10x2, which is called HW. First collumn values will be the X axis. Second collumn is [1,4,5,7,2,24,8,9,18,11] and will be in Y axis. In the plot, higher y values than average will be in different color than lower y values. I wrote this code which does not work due to numbers does not match and I am unable to find a proper plot function. I cannot use programming (such as: if statements). By the way X also randomly distributed.
I need them in one line. Such as from 1 to 2 (first 5 element) line is red than to 6th element, 24, blue and goes like this (r,b,r,b)
HWT = find(HW(:,1)>=mean(HW(:,1)))
HWS = find(HW(:,1)<=mean(HW(:,1)))
plot(HW(:,1),HW(HWT,2),"Color","r",HW(HWS,2),"Color","b")
Is there any plot function to solve this.
Thank you for your help.
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Accepted Answer
Dyuman Joshi
on 23 Oct 2023
HW = [rand(10,1) [1;4;5;7;2;24;8;9;18;11]];
%Mean value
m = mean(HW(:,2));
%Comparison with mean
idx1 = HW(:,2) >= m;
idx2 = ~idx1;
%Use the indices to plot the corresponding values
plot(HW(idx1,1), HW(idx1,2), 'r', HW(idx2,1), HW(idx2,2), 'b')
%Showing the average value
yline(m, 'k')
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More Answers (1)
Walter Roberson
on 24 Oct 2023
See https://www.mathworks.com/matlabcentral/fileexchange/19476-colored-line-or-scatter-plot or https://www.mathworks.com/matlabcentral/fileexchange/26692-color_line or https://www.mathworks.com/matlabcentral/fileexchange/23566-3d-colored-line-plot or https://www.mathworks.com/matlabcentral/fileexchange/30423-conditionally-colored-line-plot?s_tid=prof_contriblnk
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