MATLAB: How to draw hysteresis loop using matlab

loopplotting

I have velocity ,v, and discharge, q, vectors . I want to draw hysteresis plot between the two. I used plot_dir function but it can't allow me to have the plot with good view and resolution. Is there any way of plotting it?

I used this function but failed

plot_dir(v,q)

Thanks for your help.

Any function that give that shows the beginning and end of successive points with arrow is acceptable. Thanks again.

Best Answer

x = rand(10,1);
y = rand(10,1);
quiver(x(1:end-1),y(1:end-1),diff(x),diff(y),0);

Please accept an answer if it helps you.

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MATLAB: How to plot this Function in MATLAB

I would make a function of it:

 function y = custom_function(x)
   % y = custom_function(x)
   y = zeros(size(x)); %make y as big as x and fill it with zeros
   first_situation  = x >= -1 && x < 1;
   second_situation = x >= 1 && x < 2;
   y(first_situation) = (x(first_situation) + 1) / 2;
   y(second_situation) = 1;
   % the remainder of the values was already set to zero
 end

to plot this function you would use:

x = -4:4; % set x from -4 to 4
y = custom_function(x);
plot(x,y)

or to plot x+1

x_2 = (-4:4)+1; % set x from -3 to 5
y_2 = custom_function(x_2);
plot(x_2,y_2)

MATLAB: Excel data set to vectors

Use quiver function

u1 = diff(x1);
v1 = diff(y1);
plot(x,y,'.r')
hold on
quiver(x1(1:end-1),y1(1:end-1),u1,v1)
hold off

Best Answer

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MATLAB: How to plot this Function in MATLAB

MATLAB: Excel data set to vectors

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