Displaying a value in the plot
32 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
Hello,
I am plotting x vs y and I am taking out the maximum value of x with max(x)
Now I want to display this maximum value of x together with some text in a legend. I am trying to use num2str.. I am not sure if I am the right track.
0 Commenti
Risposta accettata
Star Strider
il 4 Ott 2014
I would use sprintf, for example:
x = linspace(-5,5);
y = 5-(x+2).^2;
[maxy,idx] = max(y);
figure(1)
plot(x, y, x(idx),y(idx),'pr')
legend('y(x)', sprintf('Maximum y = %0.3f',maxy))
axis([xlim min(y) max(y)+1])
2 Commenti
Star Strider
il 6 Ott 2019
Modificato: dpb
il 7 Ott 2019
@Ravnalis Michael —
Either change the call from max to min (and the rest of the code appropriately), or add a separate min call, similar to the max call.
Più risposte (1)
dpb
il 4 Ott 2014
Well, we don't know if you're "on the right track" or not, either since you didn't show what you tried nor indicate what the problem was, if any...
num2str is fine (as would be sprintf) to use to format a value for display with additional text using the format string. To display it, you use text
You can also use annotation object for an arrow pointing to the value and so on.
doc text % for details
0 Commenti
Vedere anche
Categorie
Scopri di più su Annotations in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!