Why is my plot() not working?

Hello! I'm fairly new to MATLAB and I'm tryng out a simple code which should help me plot a stress-strain curve using user-input values. However, my plot() isn't appearing. Should I add or remove something from the code?

% User-input values for Strain
initial_l = input('Enter the initial length of the material in m: ');
change_l = input('Enter the elongation of the material in m: ');

% User-input values for Stress
load = input('Enter the load exerted on the material in N: ');
rad = input('Enter the radius of the material in m: ');

% Formulas for Strain
del_l = change_l - initial_l;
strain_x = change_l./ initial_l;

% Formulas for Stress
area = pi*rad^2;
stress_y = load./ area;

% Plotting of values
figure(1) % Stress-Strain Curve
    plot(strain_x,stress_y)
        x = strain_x;
        y = stress_y;
        xlabel('Strain')
        ylabel('Stress')
        hold on
        grid on
    axis([-1 1 -0.01 0.01])

Answer 1

[Star Strider]

Experiment by commenting-out the axis call.

The values being plotted are outside the axes limits.

initial_l = 20;
change_l = 30;
load = 40;
rad = 50;

% Formulas for Strain
del_l = change_l - initial_l;
strain_x = change_l./ initial_l;
% Formulas for Stress
area = pi*rad^2;
stress_y = load./ area;
% Plotting of values
figure(1) % Stress-Strain Curve
    plot(strain_x,stress_y, '-p')
        x = strain_x;
        y = stress_y;
        xlabel('Strain')
        ylabel('Stress')
        hold on
        grid on

%     axis([-1 1 -0.01 0.01])

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[Hyunji Park]

I see it now, thank you!

[Star Strider]

My pleasure!

If my Answer helped you solve your problem, please Accept it!

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