MATLAB: How to close the extra legend added by comet fun

cometlegend

I use the comet fun to trace my simdata, however the comet fun added the extra legend data to my fig, see the attached fig that "data1, data2, data3" were added when animating.

How should I close the extra "data1, data2, data3" at the beginning of the animation? BTW, I know how to close it when the animation is finished.

Best Answer

x = 1:100 ;
y = rand(size(x)) ;
figure
h = plot(x,y) ;
hold on
comet(rand(size(x))) ;
legend(h,'one')

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MATLAB: Keep existing subplots while running code multiple times

You can change your code as follows.

fOp.figName='my_title';
hf = findobj('Type','figure','Name',fOp.figName);
if ~isempty(hf)
    % get the handles if the figure already exist
    hf = figure(hf);
    h1 = hf.Children(4); % subplot 221
    h2 = hf.Children(3); % subplot 222
    h3 = hf.Children(2); % subplot 223
    h4 = hf.Children(1); % subplot 224
else
    % create figure and subplots if the figure does not exist
    hf = figure('Name',fOp.figName);
    h1=subplot(2,2,1);
    h2=subplot(2,2,2);
    h3=subplot(2,2,3);
    h4=subplot(2,2,4);
end
hold(h1,'on');
plot(h1,x1,y1);
hold(h2,'on');
plot(h2,x2,y2);
hold(h3,'on');
plot(h3,x3,y3);
hold(h4,'on');
plot(h4,x4,y4);

MATLAB: Plot – add legend individually

If you are working with a fairly recent version of Matlab (> R2014b I think) then you can edit an existing legend if you keep the handle to it:

figure; hAxes = gca;
plot(hAxes, x1, y1, '-vr', 'LineWidth', linewidth, 'MarkerSize', markersize);
hLegend = legend( hAxes, 'stuff' );
hold( hAxes, 'on' )
plot(hAxes, x2, y2, '-vr', 'LineWidth', linewidth, 'MarkerSize', markersize);
hLegend.String{2} = 'other stuff';

It is more efficient to do all the plots first and then put the legend up for all of them though.

Best Answer

Related Solutions

MATLAB: Keep existing subplots while running code multiple times

MATLAB: Plot – add legend individually

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