How to plot with 'm' rows and 3 columns?

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Ara
Ara on 3 Mar 2013
Hi Everyone,
Just a simple question; The data is look like below and I want to plot x(for only x>0.2) as a function of Y and time. Could you please help me?
x y time
0 15 1
0.2 20 3
0.3 25 4
0.1 33 5
0.6 90 6
Thanks,
Ara

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Answers (1)

Wayne King
Wayne King on 3 Mar 2013
Edited: Wayne King on 3 Mar 2013
You only have two values here above 0.2 so it's not going to be an interesting plot, but let the matrix be A
A = [0 15 1
0.2 20 3
0.3 25 4
0.1 33 5
0.6 90 6 ];
idx = find(A(:,1)>0.2);
plot3(A(idx,3),A(idx,2),A(idx,1))
or
scatter3(A(idx,3),A(idx,2),A(idx,1))
Or you can simply set the x-values below to 0.2 to NaN for plotting
A(A(:,1) <=0.2) = NaN;
scatter3(A(:,3),A(:,1),A(:,3))
  1 Comment
Ara
Ara on 3 Mar 2013
Thanks for your help. Yes, this one is a sample of my data so it may not interesting to plot these columns as you said. Actually, I am dealing with excel data with 32 columns and 5337 rows. According to my data, when I plot as a 3D are not as clear as 2D. So I am wondering if I can find another way to plot it. And How can I read row corresponding to the row? Another question; 3, 2 and 1 represent as columns? plot3(A(idx,3),A(idx,2),A(idx,1))

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