Wrap in a legend with num2str

Hi everyone!

I'm dealing with probability density functions.

In each figure i create i would like to add to legend the mean, the standard deviation and the cov (coefficient of variation). To do that i'm using the command num2str.

My code is:

%%
Excel_Caramagnabridge=load('caramagna.txt');
af_Caramagnabridge=Excel_Caramagnabridge(:,13);
Cover_Caramagna=Excel_Caramagnabridge(:,12);

CaramagnaEdges=3:0.3:12;
[Caramagna_mean, Caramagna_std]=normfit(af_Caramagnabridge);
Caramagna_cov=Caramagna_std/Caramagna_mean;
Caramagna_distr=normpdf(CaramagnaEdges,Caramagna_mean,Caramagna_std);
testCaramagna=chi2gof(Caramagna_distr);

figure; CaramagnaHist=histogram(af_Caramagnabridge,CaramagnaEdges,'Normalization','pdf');
hold on; f1=plot(CaramagnaEdges, Caramagna_distr, 'linewidth',2, 'color','b'); grid on;

legend([f1],['\mu = ' num2str(round(Caramagna_mean,2)) '  \sigma = ' num2str(round(Caramagna_std,2))], 'orientation','vertical',...
    'location','northeast');

If i write in this way, the figure will report mean and std in a row. I just would like to wrap for each statistics.

How to do that?

Thanks!

Answer 1

[Rik]

If you use a newline character ( char(10) ), you can wrap the text. Here is some example code:

figure(1),clf(1)
h=plot(rand(1,10));

mu=0.5;sigma=0.1;
legend(h,sprintf('\\mu=%.2f\n\\sigma=%.2f',mu,sigma))

Answer 2

[Kelsey Dodge]

The above is great advice. I was looking to add two separate variables onto my graphics. The following worked:

First, I converted my variables to string characters. In this case, I was looking at displaying the mean and mode of my data set.

A1 = num2str(mm,3);

A2 = num2str(mo,3);

Then I called those variables in my legend like this:

legend('Draft (m)', sprintf('Mean = %s', A1), sprintf('Mode = %s',A2))

Which gave me the following: