Legend Colors Don't Match

Question

MR0d 2019-12-13

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/496529-legend-colors-don-t-match

编辑： MR0d 2019-12-15

I am plotting a simple line graph of 3 different sets of data on one plot and the legend works, but the legend colors do not match the colors specified for the lines. I would also like to omit the xline I have added from the legend. Thank you.

Udeficit=MeanUvelo(:,50);
Udeficit2=MeanUvelo(:,100);
Udeficit3=MeanUvelo(:,150);
figure;
plot(Udeficit,Y,'k-'); 
hold on
plot(Udeficit2,Y,'b-'); 
hold on
plot(Udeficit3,Y,'g-');
legend('Position 45','Position 90','Position 135','location',...
    'northeastoutside');
xlin=xline(AvgFree_Stream,'r-','Avg Free Stream');
hold off
xlin.LabelVerticalAlignment = 'middle';
title('Velocity Deficit Curves');
xlabel('U (m/s)');
ylabel('Y (m)');
set(gca,'Fontsize',16);

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Answer 1

Image Analyst 2019-12-13

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在 MATLAB Online 中打开

The other data1 is added automatically because of the line. Would it be okay to do

legend('Position 45','Position 90','Position 135', 'Average Free Stream', ...
'location', 'northeastoutside');

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MR0d 2019-12-13

Hello, I commented out my original legend line and inserted yours and when I ran it collectively I got a figure that looks like this

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Answer 2

Image Analyst 2019-12-13

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/496529-legend-colors-don-t-match#answer_406306

在 MATLAB Online 中打开

Try this (putting legend after the call to xline) -- it seemed to not have that last data1 legend for me:

figure;
plot(Udeficit,Y,'k-'); 
hold on
plot(Udeficit2,Y,'b-'); 
hold on
plot(Udeficit3,Y,'g-');
AvgFree_Stream = mean(Udeficit)
xlin=xline(AvgFree_Stream,'r-','Avg Free Stream');
legend('Position 45','Position 90','Position 135','location',...
    'northeastoutside');
hold off
xlin.LabelVerticalAlignment = 'middle';
title('Osc Mako Velocity Deficit Curves');
xlabel('U (m/s)');
ylabel('Y (m)');
set(gca,'Fontsize',16);
grid on;