Create an annotation into a plot

Hello,

When i create an annotation into a plot to show me a specific value that I have previously calculated, in the plot it shows me a square, instead of the value I wanted.

This is what I got, keigenvalue is a number 6 for example.

keigenvalue = find(lambda > 1, 1, 'last'); % Gives me the number of principal components that got a eigenvalue superior than 1
y1 = plot(lambda,'*r');
dim = [0.2 0.5 0.3 0.3];
str = ['PC selected =' keigenvalue];
annotation('textbox',dim,'String',str,'FitBoxToText','on');

Thanks for your help.

Answer 1

[madhan ravi]

str = ['PC selectec =' num2str(keigenvalue)]; %if it doesn't work provide all your values

[Tiago Dias]

It works, thanks!

[madhan ravi]

Anytime :)