How to plot a dispersion diagram like this?

hello everyone,

I need to plot such a diagram in matlab but I don't know how exactly I can do this. may you please help me to know how I would be able to plot a dispersion diagram like this one below?

[dpb]

Just plot each line in succession after hold on

If you have all the data at once, put into 2D array by column for each variable and each will be plotted in one call to plot()

Include the discontinuous pieces to draw on top of the axes; will have to have the limits consistent to draw on the axis itself.

[Amir Farrokhnejad]

Thanks for your response

but in this case my problem is that I don't know how exactly I can code such a plot

Answer 1

[Swetha Polemoni]

Hi

It is my undersatanding that you want to draw ellipse, hyperbola and straight line in first quadrant. Try the following code and experiment with alpha, beta and f to get the exact diagram as you need.

%% plotting ellipse
alpha=20;
theta=0:0.01:pi/2;
x1=alpha*cos(theta);
y1=sin(theta);
axis([0 20 0 1])
plot(x1,y1);
hold on
%% plotting hyperbola
beta=15;
fun1 = @(x2,y2) y2.^2 - (x2/beta).^2 -1;
fimplicit(fun1,[0 20 0 2]);
hold on
%% plottig straight line
f=0.09;
x3=0:0.1:17;
y3=f*x3;
plot(x3,y3)
hold off

[Amir Farrokhnejad]

Hello Swetha

Thanks for your response. It solved my problem!

All the best