Plot 2 matrices in one graph with 3 axis
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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 个评论
Ameer Hamza
2018-6-16
编辑：Ameer Hamza
2018-6-16
Have you tried plot3()
plot3(pct, CR, MSE);
kortas manel
2018-6-16
编辑：kortas manel
2018-6-16
MSE is a matrix of size (n*n)= (pct=1:1:n)*(ptx=1:1:n) CR is a matrix of size (n*n)= (pct=1:1:n)*(ptx=1:1:n)
When I tried : plot3(1:n, CR , MSE) , I obtained this
</matlabcentral/answers/uploaded_files/121689/3d.png> This is not what I expect .
the curves that I want to get comes from this loop
for pct=1:n figure(pct) plot(CR(pct,:),MSE(pct,:)) end
But I want these curves in one graph positioned successively according to pct values
Ameer Hamza
2018-6-16
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?
kortas manel
2018-6-16
采纳的回答
Ameer Hamza
2018-6-16
编辑：Ameer Hamza
2018-6-16
From your question description, it appears you want something like this
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 个评论
kortas manel
2018-6-16
Ameer Hamza
2018-6-16
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.
更多回答（1 个）
Guillaume
2018-6-16
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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