Plotting from a .mat file takes too long, what to do?

Hi all,

I have a small data to be plotted but having problem. Data is read from xlsx file and I saved it to mat file. attached file has 2 variables, each 801 long.

But when plotting, figure windows opens in background with no plot, also i cant bring it to front by clicking. It must be trivial but i cant see it. what can be the problem?

Thanks

Utku

Answer 1

[Star Strider]

I would have to see your code to see what the problem could be.

It plots for me without problems:

D = load('utku g data.mat');
x = D.x;
y = D.y;

figure(1)
plot(x, y)
grid

[utku g]

Hey, I was just using,

   plot(x, y)

without figure command. After asking the question, I have closed MATLAB, when reopened it ran successfully.

But I wonder why did this happen? Can it be because I read 50 more variables other than these two? It seemed working correctly though.

Thanks Star Strider.

[Star Strider]

My pleasure.

The figure call is not necessary, but since MATLAB will plot in the available figure window, specifying a new one each time will allow you to plot several figures in different figure windows without overplotting them (unless you want to).

For instance, if you plot:

figure(1)
plot(x1, y1)
plot(x2, y2)

the second plot call replaces the first, so you will only see (x2,y2) plotted. If you specify different figures:

figure(1)
plot(x1, y1)

figure(2)
plot(x2, y2)

each will plot in its own figure window.