Plotting With Arrays on Surf Function

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

Answer 1

[Image Analyst]

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.

[fraser watts]

%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)')

[Image Analyst]

Again, what is Laptime and how is it supposed to change upon every iteration?

[fraser watts]

laptime = 38.1615 btw

[fraser watts]

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]

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

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

Answer 2

[Walter Roberson]

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

[fraser watts]

so how would i change