How to compare between two surface plots in matlab?

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Adi Nor 2020-11-12

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https://ww2.mathworks.cn/matlabcentral/answers/645843-how-to-compare-between-two-surface-plots-in-matlab

评论： Star Strider 2020-11-12

A and B are two 2D matrices with dimensions (length(X), length(Y)) which are function of X and Y vectors. I plot A and B in a 3D graph using surf as follows:

figure(1)
surf(X,Y,A)
hold on
surf(X,Y,B)
hold on

But, the generated figure doesn't show the difference in values between A and B clearly.

Is there any other way where I can compare between A and B in a 3D plot and show the differences between them clearly?

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Star Strider 2020-11-12

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https://ww2.mathworks.cn/matlabcentral/answers/645843-how-to-compare-between-two-surface-plots-in-matlab#answer_542563

在 MATLAB Online 中打开

Perhaps:

figure(1)
surf(X,Y,A, 'FaceAlpha',0.5)
hold on
surf(X,Y,B, 'FaceAlpha',0.5)
hold off

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Adi Nor 2020-11-12

编辑：Adi Nor 2020-11-12

在 MATLAB Online 中打开

I need to show the difference between the two matrices more clearer because the values of matrix A is obtained from my optimization, wheras the values of B is obtained from the literature and I want to show the siginficant improvenment in the values of A compared to B through plotting the both matrices. I can give you the data:

X = -20:10:80; %length(X)=11
Y = 2:2:8; %length(Y)=4
%my optimized matrix A (4*11)
A = [0.0046    0.0442    0.3160    1.3217    3.5302    5.8383    6.9030    7.1149    7.1335    7.1327    7.0763;
    0.0047    0.0450    0.3329    1.4479    4.1525    6.5922    7.6623    7.8441    7.8713    7.8725    7.8008;
    0.0048    0.0466    0.3562    1.5350    4.5591    7.2824    8.5957    8.8450    8.8786    8.8067    8.8070;
    0.0049    0.0475    0.3795    1.5952    4.7382    7.9092    9.5009    9.8884    9.9292    9.8430    9.8434]
%matrix B from previous work (4*11)
B = [0.0047    0.0445    0.3077    0.8624    2.4259    4.9777    6.2328    6.5002    6.5413    6.5441    6.4802;
    0.0047    0.0445    0.3077    0.8624    2.4259    4.9777    6.2328    6.5002    6.5413    6.5441    6.4802;
    0.0047    0.0445    0.3077    0.8624    2.4259    4.9777    6.2328    6.5002    6.5413    6.4801    6.4802;
    0.0047    0.0445    0.3077    0.8624    2.4259    4.9777    6.2328    6.5002    6.5413    6.4801    6.4802]

Adi Nor 2020-11-12

Thank you! it works well now.

Star Strider 2020-11-12

As always, my pleasure!

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更多回答（1 个）

Ameer Hamza 2020-11-12

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https://ww2.mathworks.cn/matlabcentral/answers/645843-how-to-compare-between-two-surface-plots-in-matlab#answer_542598

在 MATLAB Online 中打开

Sometime plotting the difference can be helpful for visualization

figure(1)
surf(X,Y,A-B)

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Adi Nor 2020-11-12

在 MATLAB Online 中打开

The data is given as follows:

X = -20:10:80; %length(X)=11
Y = 2:2:8; %length(Y)=4
%my optimized matrix A (4*11)
A = [0.0046    0.0442    0.3160    1.3217    3.5302    5.8383    6.9030    7.1149    7.1335    7.1327    7.0763;
    0.0047    0.0450    0.3329    1.4479    4.1525    6.5922    7.6623    7.8441    7.8713    7.8725    7.8008;
    0.0048    0.0466    0.3562    1.5350    4.5591    7.2824    8.5957    8.8450    8.8786    8.8067    8.8070;
    0.0049    0.0475    0.3795    1.5952    4.7382    7.9092    9.5009    9.8884    9.9292    9.8430    9.8434]
%matrix B from previous work (4*11)
B = [0.0047    0.0445    0.3077    0.8624    2.4259    4.9777    6.2328    6.5002    6.5413    6.5441    6.4802;
    0.0047    0.0445    0.3077    0.8624    2.4259    4.9777    6.2328    6.5002    6.5413    6.5441    6.4802;
    0.0047    0.0445    0.3077    0.8624    2.4259    4.9777    6.2328    6.5002    6.5413    6.4801    6.4802;
    0.0047    0.0445    0.3077    0.8624    2.4259    4.9777    6.2328    6.5002    6.5413    6.4801    6.4802]