I have a problem with the insertion of legend in a 3D plot in matlab. I have a list of data, in particular I have a nx3 matrix filled with data to plot and I want to separate these data by means of a discriminant. In my case the discriminant is time, so if i-th data is before the discriminant time it will be plotted in blue color, otherwise in red color. The code is
figure(1)plot3(ra(1),dec(1),Time2plot(1),'*','Color','r', 'DisplayName', 'observation day');hold on;plot3(ra(end),dec(end),Time2plot(end),'*','Color','b','DisplayName', 'next day');legend show;for i = 1:length(Time2plot) if timeofday(Time2plot(i)) > B(1) && timeofday(Time2plot(i)) < B(2) hold on; plot3(ra(i),dec(i),Time2plot(i),'*','Color', 'b'); else hold on; plot3(ra(i),dec(i),Time2plot(i),'*','Color','r'); endendhold on;title(['RA Dec in 3D ', date(1,1)]);xlabel('RA');ylabel('Dec');zlabel('Time');ztickformat('HH:mm:ss');grid on;
where B is discriminant time.
The result is
The issue is that I'd like only two line in legend: 'next day' and 'observation day' and not all data. Someone can help me?
Best Answer