Legend inside a plot

Hi all, I want to plot more than two graphs inside a figure, but I would like to label with a legend just two of them. It is possible without writing anything in the related position inside the command legend: legend('string1','','','string2')

but I get the line of the missing label in the legend panel!!

How can I take off the string and the symbol in the legend panel???

Thanks M

[Oleg Komarov]

You can start by giving a complete example of the issue:

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

[Ocram]

y1= sin(1:1:20)

y2= 3*sin(1:1:20)

y3= 2*sin(1:1:20)+3

plot(y1,'r'), hold on,

plot(y2,'b:'), hold on,

plot(y3,'g'),

legend('y1','','y3')

I tried to plot 3 tracks but I can't cancel the second line in the legend. I didn't write the name of this second string, but the line remains.

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/techdoc/creating_plots/braliom.html

Answer 2

[Ocram]

I tried this second code:

y1= sin(1:1:20) 
y2= 3*sin(1:1:20) 
y3= 2*sin(1:1:20)+3 
plot(y1,'r'), hold on, 
h= plot(y2,'b:'), hold on, 
plot(y3,'g'), 

set(get(get(h,'Annotation'),'LegendInformation'),'IconDisplayStyle','off'); % Exclude line from legend
legend('y1','y3')

but in this case I have direct access to the single plot commands.

Instead, I have a function which return me just the figure with different tracks inside.... so I can't get the handle like in this last example.

[Walter Roberson]

axch = get(gca, 'Children');

Then in your set() code, replace h with axch(2)

[Ocram]

It doesn't work out. :(

[Oleg Komarov]

What do you mean? It does work for me:

axch = get(gca, 'Children');

set(get(get(axch(2),'Annotation'),'LegendInformation'),'IconDisplayStyle','off');