Legend showing same symbol for loop plot
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My legend is showing the same symbol for different data. My code is as follows
for i=1:size(obs,1)
x = V(:,1)'*obs(i,:)';
y = V(:,2)'*obs(i,:)';
z = V(:,3)'*obs(i,:)';
if(grp{i}=='Cancer')
plot3(x,y,z,'r+','LineWidth',2);
else
plot3(x,y,z,'ko','LineWidth',2);
end
end
xlabel ('V1 modes')
ylabel ('V2 modes')
zlabel ('V3 modes')
legend('Cancer Patients', 'Normal Patients')
In the output, the legend is showins the 'r+' for both cancer patients and normal patients
采纳的回答
Try this
for i=1:size(obs,1)
x = V(:,1)'*obs(i,:)';
y = V(:,2)'*obs(i,:)';
z = V(:,3)'*obs(i,:)';
if(grp{i}=='Cancer')
hc = plot3(x,y,z,'r+','LineWidth',2,'DisplayName','Cancer');
else
hn = plot3(x,y,z,'ko','LineWidth',2,'DisplayName', 'Normal');
end
end
legend([hc,hn])
If you still only see the Cancer group in the legend, check that grp contains character vectors that aren't 'Cancer'.
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