Azzera filtri
Azzera filtri

Why does my legend only display 50 entries?

64 visualizzazioni (ultimi 30 giorni)
I have a plot with more than 50 items and I would like to add a legend for all of them. The legend gets truncated at 50.
p = plot(magic(100));
labels = cellstr(num2str((1:100)'));
legend(p,labels)
 

Risposta accettata

MathWorks Support Team
MathWorks Support Team il 20 Ott 2017
Legends are currently limited to no more than 50 entries. Usually in plots with more than 50 features, the plot is so cluttered and the legend is so large that it is more advisable to select just a few key items to display in the legend.
If you do require more than 50 entries, the workaround is to create an additional legend. This requires creating an additional hidden axes.
First plot the original data.
p = plot(magic(100));
labels = cellstr(num2str((1:100)'));
legend(p(1:50),labels(1:50),'location','westoutside')
Next create an additional axes so that the figure can have two legends. Because the new legend needs information about the color of each line, it is necessary to copy the original lines to this new axes.
set(gcf,'NextPlot','add')
newAx = axes;
newP = copyobj(p,newAx);
legend(newP(51:100),labels(51:100),'location','eastoutside')
Now make the new axes and copied lines invisible. Normally, this would be done by setting the Visible property of each line to 'off', however this would gray out the corresponding entries in the legend. Instead, set the XData and YData properties of each line to NaN.
axis(newAx,'off')
set(newP,'XData',NaN,'YData',NaN)
  1 Commento
Eric Sargent
Eric Sargent il 9 Dic 2020
Legend will cap the number of entries at 50 if no handles are specified. To have all objects in an axes show up, pass in their handles to the legend command.
p = plot(magic(100));
legend(p);

Accedi per commentare.

Più risposte (1)

Eric Sargent
Eric Sargent il 9 Dic 2020
Legend will cap the number of entries at 50 if no handles are specified. To have all objects in an axes show up, pass in their handles to the legend command.
p = plot(magic(100));
legend(p);
  1 Commento
Walter Roberson
Walter Roberson il 24 Dic 2020
It gets the axes handles from ancestor(p, 'axes') so it does not need to be passed a handle axes.

Accedi per commentare.

Tag

Non è stata ancora inserito alcun tag.

Prodotti


Release

R2017a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by