How can I generate a legend of two combined figures? I

Hello everybody,

I wrote a Skript to combinen two separates figures of gyroscpic data of legs of horses. VR is right front leg HL is left hind leg.

I changed the colour of one into orange for being able to differentiate between them.

Now I am trying to add the legend that both lines are mentioned, but nothing I tried works.

I hope anybody can give me a resolution that works, thank you!

Files of figures are attached, skript is as followed:

close all, clear all;
%um die diagonalen Beinpaare in eine Abbildung zu bekommen, inkl
%Auftrittspunkte
VR= openfig('bueVR150GZ.fig', 'reuse');
HL= openfig('bueHL150GZ.fig', 'reuse');

b = get(gca,'child');
c = get(b,'Type');
b = findobj(gca,'Type','Line');
set(b,'Color',"#D95319");%changes colour

figure %two figures combined in one to visualise synchronicity of leg movement
h1=subplot(1,1,1);
h2=subplot(1,1,1);
copyobj(allchild(get(VR,'CurrentAxes')),h1 );
hold on
 copyobj(allchild(get(HL,'CurrentAxes' )),h2);
xlim([0 inf]);
xlim tight;
%xticks(0:10:end)
grid on;
grid minor;
xlabel('Zeit [s]')
ylabel('Winkeländerung [dps]')
title('Auftrittspunkte des diagonalen Beinpaares','FontSize',12);
%legend({'Vorderbein (rechts)'}{'Hinterbein (links)'});
%hleg1 = legend(VR,"Messdaten");
%hleg2 = legend(HL);
%legend(hleg1, hleg2);
ax= gca;
ax.XTick = 0:1:150 ;%damit wir die beschriftung der xAchse eingestellt


%egend(sprintf(%s, ))%steht hier für character und sprintf steht sozusagen
%für einsetzen. dieses wird immer mit einem Befehlt/anweisungangegeben und
%dann, was in dieese anweissung für variablen/elemente eingesetzt werden
%sollten
%legend(get(gca, 'children'), get(get(gca, 'children')));
%set('XTick',min:1:max);
%XLim = get(gca, 'XLim');
%stepBy = 2.5;
%set(gca, 'XTick', XLim(1):stepBy:XLim(2))
%set(gca, "GridLineStyle", "--")
%savefig('1BueVRHLGyroz150AP.fig')

Answer 1

[dpb]

%um die diagonalen Beinpaare in eine Abbildung zu bekommen, inkl
%Auftrittspunkte
VR= openfig('bueVR150GZ.fig','invisible');
HL= openfig('bueHL150GZ.fig','invisible');
b = get(gca,'child');
c = get(b,'Type');
b = findobj(gca,'Type','Line');
set(b,'Color',"#D95319");%changes colour

figure %two figures combined in one to visualise synchronicity of leg movement
h1=axes;
copyobj(allchild(get(VR,'CurrentAxes')),h1);
hold on
copyobj(allchild(get(HL,'CurrentAxes')),h1);
xlim([0 inf]);
xlim tight;
%xticks(0:10:end)
grid on;
grid minor;
xlabel('Zeit [s]')
ylabel('Winkeländerung [dps]')
title('Auftrittspunkte des diagonalen Beinpaares','FontSize',12);
legend('Vorderbein (rechts)','Hinterbein (links)','location','southwest');

You were almost there. :) The problem is you created two axes on top of each other by using subplot and put the two in those separate axes instead of creating a (one) new axes into which to put both. And, legend only puts elements that are on the same axes in its list/display so you couldn't put but the one on each. With both in the one axes, then it works as desired.

[Belinda]

Thank you very much!

But now the problem is that the legend shows the line of the right front leg (blue) and the dots show the point in time of footing. But the orange line of the left hind leg is as important as the blue line.

I would like to see in my legend only the mentioned lines or aswell the point of time of footing of both legs. I don't know why, no matter what I try, the legend of the orange line does not appear...

Would be really great if you could help me with this aswell :)

[dpb]

Well, the points were plotted as individual points so there are actually a zillion lines on each plot; identifying which are the two solid lines to tell legend which two out of all them to label is the problem...

VR= openfig('bueVR150GZ.fig','invisible');
HL= openfig('bueHL150GZ.fig','invisible');
b = get(gca,'child');
c = get(b,'Type');
b = findobj(gca,'Type','Line');
set(b,'Color',"#D95319");%changes colour

figure %two figures combined in one to visualise synchronicity of leg movement
h1=axes;
copyobj(allchild(get(VR,'CurrentAxes')),h1);
hold on
copyobj(allchild(get(HL,'CurrentAxes')),h1);
xlim([0 inf]);
xlim tight;
%xticks(0:10:end)
grid on;
grid minor;
xlabel('Zeit [s]')
ylabel('Winkeländerung [dps]')
title('Auftrittspunkte des diagonalen Beinpaares','FontSize',12);
hL=findobj(h1,'LineStyle','-')

hL = 
  2×1 Line array:

  Line    (Messdaten)
  Line    (Messdaten)

legend(hL,'Vorderbein (rechts)','Hinterbein (links)','location','southwest');

If the order is reversed (will depend on the order were initially plotted as to who's first in line), then just reverse the order of the text or the order of the handles.

The above handles show the two lines were labelled so if had known that a priori, could have searched for the specific text, but didn't know anything about that so just looked for the solid lines and, luckily, there are only two of those.

[Belinda]

thank you so much, it works great now!