Plotting With Arrays on Surf Function

Question

fraser watts 2022-4-30

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1709070-plotting-with-arrays-on-surf-function

编辑： Image Analyst 2022-5-1

采纳的回答： Image Analyst

calculating the array correctly, yet when recalling it for displying on surf plot its just a flat surface

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Answer 1

Image Analyst 2022-4-30

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https://ww2.mathworks.cn/matlabcentral/answers/1709070-plotting-with-arrays-on-surf-function#answer_954735

How did you paste that code in there? I can't copy it. You didn't paste an image did you? We can't run an image. Post your code as code, or else attach it with the paperclip icon.

What is "laptime"? It doesn't change inside the loop so it's not surprising your array is all the same value.

Anyway, plot is a function. Do not use it as a variable name.

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fraser watts 2022-4-30

编辑：Image Analyst 2022-4-30

在 MATLAB Online 中打开

%Sensitivity Analysis
Axisl = [0.9 0.91 0.92 0.93 0.94 0.95 0.96 0.97 0.98 0.99 1 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.1];
plot = zeros;
for k = 1:21
    
    m = 650 * Axisl (k);
    %D_Weight = 0.46 * Axis1 (k);
    %R_Weight = 1-D_Weight;
    %CDA = 0.35 * Axis1 (k);
    %CLA2 = 0.50 * Axis1 (k)
    %CoG = 275 * Axis1 (k);
    %mu_long = 1.45 * Axis1 (k); 
    %mu_lat = 1.38 * Axis1 (k);
    %D_Aero2 = 0.45 * Axis2 (k);
    %R_Aero = 1-D_Aero2;
    %FinalDR = 10/37 * Axis1 (k);
    for j = 1:21
        
        %m = 650 * Axis1 (j);
        %D_Weight = 0.46 * Axis1 (j);
        %R_Weight = 1-D_Weight;
        %CDA = 0.35 * Axis1 (j);
        %CLA2 = 0.50 * Axis2 (j);
        %CoG = 275 * Axis1 (j);
        mu_long = 1.45 * Axisl (j); 
        mu_lat = 1.38 * Axisl (j);
        %D_Aero2 = 0.45 * Axis1 (j);
        %R_Aero = 1-D_Aero2;
        %GearRatio = 21/29 * Axis1 (j);
        
        %Sensitivity Analysis End
        
        plot (k,j) = Laptime;
    end
end
Unrecognized function or variable 'Laptime'.
surf(plot)
xlabel('Mass = -10% -> +10%')
ylabel('Weight Distribution 10% -> 10%')
zlabel('LapTime (s)')

fraser watts 2022-4-30

just realised it wont work need to change original code to then refernce laptime as an array into this new section, appriciate the repsonses though

Image Analyst 2022-5-1

编辑：Image Analyst 2022-5-1

在 MATLAB Online 中打开

@fraser watts, if you have Laptime defined in advance somehow you can perhaps do

myPlot(k,j) = Laptime(k, j);

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Answer 2

Walter Roberson 2022-4-30

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https://ww2.mathworks.cn/matlabcentral/answers/1709070-plotting-with-arrays-on-surf-function#answer_954725

Every iteration you are storing the exact same value Laptime, which never changes.

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fraser watts 2022-4-30

so how would i change

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Plotting With Arrays on Surf Function

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Plotting With Arrays on Surf Function

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