MATLAB: Figure(2) not opening a new window, simply overwrites figure(1)

figurenot a bugpossible bug

Hi all,

I have this problem which infuriates me.

Whenever I try to use 'figure(2) = plot(…);' after 'figure(1) = plot(…);', the second plot simply appears on figure(1). No new window name Figure 2 appears. Sometimes it completely deletes figure 1. Please say you've heard of this.

Best Answer

"'figure(2) = plot(...);" is not the correct calling. Try this:

figure(2);
plot(...);

This opens a new figure at first and inserts a plot afterwards.

Your command stores the line handle replied by the plot command in the 2nd element of the variable called "figure". This has the side effect, that the command figure is "shadowed" by the variable, such that it cannot be called directly anymore.

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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: Bind plot with some figure

In this case, you should specify which axes to plot on. See the example below:

%Initialize the figures
Gx = gobjects(1, 4);
Ax = gobjects(1, 4);
for k = 1:4
    Gx(k) = figure(k);
    Ax(k) = axes(Gx(k));
end
%Plot to the Nth figure
for k = 1:4
    plot(Ax(k), rand(1, 10), rand(1, 10));  
          ^ INCLUDE AXES HERE!  %To plot to 1st figure, use Ax(1). 2nd figure, use Ax(2). etc.
end

Best Answer

Related Solutions

MATLAB: Plotting in same figure window

MATLAB: Bind plot with some figure

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