Plot in real time
432 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Caleb
am 25 Jul. 2013
Kommentiert: Khang Nguyen
am 7 Sep. 2023
I want to take a 2-dimensional vector and plot it, but I want to show the line being drawn as if the data is being gathered in real time. However, I'll have the data already stored in an array.
For example, if I wanted to plot y = sin(x) from x = 1 to 25, then I would use the following command:
plot(sin(1:0.01:25));
But I want to see the curve being drawn as if it's being done in real-time. How would I do this?
0 Kommentare
Akzeptierte Antwort
the cyclist
am 25 Jul. 2013
One possible way:
x = 1:0.01:25;
y = sin(x);
n = numel(x);
figure
hold on
for i = 1:n
plot(x(1:i),y(1:i))
xlim([0 25])
ylim([-1.1 1.1])
pause(0.05)
end
4 Kommentare
Alireza Madani
am 30 Apr. 2022
Does anyone know how can we program this scenario in a way that the speed of the while/for loop is controller with the real time? For example if we want to plot y = sin(t) and t = 0 : 0.01 : 25. It actually takes 25 seconds for the MATLAB to plot this.
Weitere Antworten (1)
Anshul Rathore
am 25 Mär. 2019
Don't use hold on instead use drawnow function to update your plots as it is much faster.
x = 1:0.01:25;
y = sin(x);
n = numel(x);
figure;
for i = 1:n
plot(x(1:i),y(1:i),'-r');
xlim([0 25]);
ylim([-1.1 1.1]);
drawnow;
end
2 Kommentare
Jonathan Arias
am 22 Mai 2021
you have to add this line (before drawnow):
addpoints(an,x(i),y(i));
More examples: https://la.mathworks.com/help/matlab/ref/drawnow.html
Siehe auch
Kategorien
Mehr zu Graphics Performance finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!