MATLAB: How to display two graphs in separate figure windows using plot command

graphMATLABmuliple figuresplotsubplot

i use a matlab program for my project. There i want to produce two graphs at different instances. But the second graph replaces the 1st graph when that command is executed.. i want both to be displayed in separate window. I dont want both graphs in same window (using "subplot"). Is it possible in matlab?

Best Answer

Use figure command

plot(a);
figure;plot(b,'r');

Related Solutions

MATLAB: Plotting in same figure window

>> help figure

FIGURE Create figure window.
  FIGURE, by itself, creates a new figure window, and returns
  its handle.
    FIGURE(H) makes H the current figure, forces it to become visible,
    and raises it above all other figures on the screen.  If Figure H
    does not exist, and H is an integer, a new figure is created with
    handle H.

So, if you want to always plot on the same figure, you can use h=figure(1), which may not be good in some cases because it over-write the existing figure 1.

Or, you can use close() to close the existing figure first.

In any case, remember figure has a handle. It is like the figure's ID. You can always specify to which figure you want to plot.

h1=figure(1);
set(h1,'name','myname');
plot(1:10);

MATLAB: Only the most recent graph showing up

When you call the 'plot' function, without any other arguments, MATLAB will automatically plot the most recent request on the current figure, overwriting previously plotted data. If you wish the plotted data to appear on the same figure, I suggest using the 'hold' command (it means matlab won't wipe the figure each time you want to plot on it):

% Call a figure to be created
figure;
plot(t,c) % Plot first graph
hold on   % prevents matlab overwriting current figure data
plot(t,s) % plot second figure
hold off  % turns the hold off

Don't forget to turn the hold off, as it can (sometimes) have unexpected results later on with your code.

Alternatively, if you want the two plots on seperate figures, you should either call a new figure to be created each time, or use 'subplot' to plot multiple graphs on one figure:

% Example plot on two seperate figures
figure;
plot(t,c) 
figure; 
plot(t,s) 
hold off  
% Example plot for two seperate graphs on one figure
figure;
subplot (2,1,1)
plot(t,c)
subplot(2,1,2)
plot(t,s)

I reccomend you read the documentation on subplot as to how the layout works.

Best Answer

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MATLAB: Plotting in same figure window

MATLAB: Only the most recent graph showing up

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