Legend showing same symbol for loop plot

Question

Cutie 2023-4-29

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1955169-legend-showing-same-symbol-for-loop-plot

编辑： Cutie 2023-4-29

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
Unrecognized function or variable 'obs'.
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

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Adam Danz 2023-4-29

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1955169-legend-showing-same-symbol-for-loop-plot#answer_1225844

编辑：Adam Danz 2023-4-29

在 MATLAB Online 中打开

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])