How to do a dynamic graph in matlab

[juanitotruan77]

Hi guys, so I've never used MATLAB before, and i need to make a plot that changes constantly.
Let's say that i have Sin(x) from 0 to 3pi
Then i need it to change to a Cos(x) from 0 to 3pi
then to a Tan(x).

I could do it in other languaje like Php or c, but in MATLAB i have no idea. I think it can be made with a for cycle nested inside of another for cycle.

 

[juanitotruan77]

Nevermind, i got it. What i really wanted was a changing sin plot. I'm going to leave it here in case anyone needs it.

f = @(x,t) 1.5*sin(10*x-5*(t/10));
linkdata on
hold on;
for t=1:50
    xi = -3*pi:pi/1000:pi;
    plot(f(xi,t));
    pause(.1);
clf('reset')
end

 

[kreil]

Very cool!

 

[juanitotruan77]

Very cool!

Thanks (:

 

[alphy]

Hi there! Creating a dynamic graph in MATLAB is actually quite simple. You can use a for loop to continuously update the graph with new data points. Here's an example of how you could plot Sin(x), Cos(x), and Tan(x) on the same graph:

1. First, define the x-values for your plot. In this case, we'll use the range from 0 to 3pi with a step size of 0.1. You can do this by using the linspace function: x = linspace(0, 3*pi, 31);

2. Next, create a for loop to plot Sin(x) on the same graph. Inside the loop, use the plot function to plot the x-values against Sin(x): for i = 1:length(x) plot(x(1:i), sin(x(1:i))) % plots x-values from 1 to i against Sin(x) pause(0.1) % pauses for 0.1 seconds before updating the graph end

3. Repeat the same process for Cos(x) and Tan(x) using the same for loop structure. Just replace "sin" with "cos" or "tan" in the plot function.

4. You can also add a legend to your graph to label each function. Use the legend function and specify the labels for each plot: legend('Sin(x)', 'Cos(x)', 'Tan(x)')

5. Finally, you can add a title and axis labels to your graph using the title, xlabel, and ylabel functions.

And that's it! Your graph should now update dynamically with each new function plotted. I hope this helps and happy graphing!