append legend in matlab 2015

Hi,

In previous versions of Matlab, I could append a legend if I wanted or not, using the following code. This was very handy in case I didn't have all handles of plots at the beginning and just wanted to append the list of new plots. Any idea how to do this in Matlab 2015?

Many thanks M

[LEGH,OBJH,OUTH,OUTM] = legend; % reading handles

LEGH = legend([OUTH;hnew],OUTM{:},'newPlotName'); % append new plot

where 'hnew' is the handle of the new plot and ''newPlotName' its name.

[Alexander Mueller]

Here's an example of how to update the legend to include newly added plots.

% plot 3 lines and add a legend

p=plot(magic(3));
l=legend(p,'plot1','plot2','plot3');

% add a fourth line, specifying the DisplayName

hold on
plot([5 5 5],':','DisplayName','plot4')

% turn legend off and back on.

legend('off');
legend('on');

[N/A]

Hi Alexander, I just realized I have received your response, thanks.

I am missing a final point from your explanation above. What I am really interested in, is to remove (for example) the legend of the yellow line, while keeping the yellow line and all other legends... If you have any idea please let me know.

Thanks

Answer 1

[JaeJun Lee]

In my version(R2015b),

legend('on') did not work for me. It just created a legend named with 'on'. But 'show' just worked well.

legend('off')
legend('show')

Answer 2

[Tyler Rhodes]

%first get the legend handles

old_legend=findobj(gcf, 'Type', 'Legend');

%then append the legend with new entry

legend([old_legend.String,'new_entry'])