Plot 2 matrices in one graph with 3 axis
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kortas manel
le 16 Juin 2018
Commenté : Ameer Hamza
le 16 Juin 2018
Hi, I have to plot curves "MSE" witch depend on 2 variables. Variable 1 : "pct=1:1:n" and variable 2 : "CR" .
But "CR" depends on two variables also:
"ptx=1:1:n" and "pct=1:1:n"
MSE=fct(CR,pct)
Here a simplification of the code:
for pct=1:1:n
for ptx=1:1:n
calculate CR(pct,ptx)
calculate MSE(pct,ptx)
end
end
I want to plot curves of "MSE" in function with "pct" and "CR" , it means ;
axis x : "pct"
axis y : "CR"
axis z : "MSE"
That is, a kind of succession of curves Thank you in advance
4 commentaires
Ameer Hamza
le 16 Juin 2018
Your x variable is an n-element vector, whereas y and z are nxn matrices. And from your for loop example, it seems that you want several 2D plots. Can you show an example plot similar to what you are trying to draw?
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Ameer Hamza
le 16 Juin 2018
Modifié(e) : Ameer Hamza
le 16 Juin 2018
From your question description, it appears you want something like this
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/189283/image.jpeg)
Here is a sample code with random values to generate this
n = 10;
x = 1:n; % 1 x n vector
y = repmat(1:n, n, 1); % n x n matrix
z = rand(n); % n x n matrix
plot3(1*ones(n,1), y(1, :), z(1, :)); % plot one line outside for loop to get the axes handle
ax = gca;
hold(ax);
grid on
xlabel('pct');
ylabel('CR');
zlabel('MSE');
for i=2:n
plot3(i*ones(n,1), y(i, :), z(i, :));
end
2 commentaires
Ameer Hamza
le 16 Juin 2018
In that case, you will also need to adjust the first input to plot3()
plot3(i*ones(9,1), y(i, :), z(i, :));
I guess this might be causing the issue.
Plus de réponses (1)
Guillaume
le 16 Juin 2018
If your calculate functions can operate on matrices:
[pct, ptx] = ndgrid(n);
CR = yourcalculateCRfunction(pct, ptx);
MSE = yourcalculateMSEfunction(pct, ptx);
plot3(pct, CR, MSE);
Otherwise
[pct, ptx] = ndgrid(n);
CR = zeros(size(pct));
MSE = zeros(size(pct));
for i = 1:numel(pct)
CR(i) = yourcalculateCRfunction(pct(i), ptx(i));
MSE(i) = yourcalculateMSEfunction(pct(i), ptx(i));
end
plot3(pct, CR, MSE);
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