How can I get a plot like this on Matlab?

Hi,

Does anyone know how do I obtain a figure like the one in attachment?

I have x axis and y axis data corresponding to the top (or bottom) of the blue sticks, so that if I plot it in Matlab it gives me just a point at the end of the stick. What I would like to do is to draw that continuous line which would represent the spectrum and giving it a definite peak width (the same for all the peaks is ok); if also the blue stick can be added it would be great.

I am not very good with Matlab, so I hope you understand what I mean and someone can solve my problem.

Thanks

Answer 1

[Rik]

You can do something like this:

%set some mu,height,sd pairs
%(replace with your actual data)
mu_list=[1200 1350 1500 1550 1600];
height_list=[300 100 100 200 75];
sd_list=[20 20 100 20 40];

%define the x-scale
x=linspace(1100,1700,1000);

%define a scalable gaussian
G_fun=@(x,mu,sd) 1/sqrt(2*pi*sd^2)*exp(-(x-mu).^2/(2*sd^2));
G_fun_scaled=@(x,mu,sd,scale) scale*sqrt(2*pi*sd^2)*G_fun(x,mu,sd);

%loop over the gaussians to get the sum
figure(1),clf(1)
y=zeros(size(x));
for n=1:numel(mu_list)
    [mu,sd,scale]=deal(mu_list(n),sd_list(n),height_list(n));
    y=y+G_fun_scaled(x,mu,sd,scale);
    plot([mu mu],[0 scale],'b'),hold on
end
plot(x,y,'k')

[Federico Bonaldo]

It works perfectly, thank you!