Remove legend items from Figure

In the figure, how to remove the item "aa" from the legennd without changing the shape of other items?

    PointStyle = {'kp-', ...
            'LineWidth', 1,...
            'MarkerEdgeColor', 'k',...
            'MarkerFaceColor', [0 0 .8],...
            'MarkerSize',9};
        
    plot(Points, PointStyle{:});
    hold on
   
    dataStyle = {'Marker','o', ...
        'LineWidth', 1,...
        'MarkerEdgeColor', [.8 0.4 0.2],...
        'MarkerFaceColor', [1 .6 0.2],...
        'MarkerSize',7};
    
    plot(data, dataStyle{:});

if n <=3
      %toDO
else
   legend_str = {'aa','bb','cc'};
   legend(legend_str, 'Fontsize',10,'Location', 'southoutside', 'Orientation','horizontal'); 
   
end

if n <=3
      %toDO
else
   legend_str = {'aa','bb','cc'};
   legend(legend_str{2}, legend_str{3}, 'Fontsize',10,'Location', 'southoutside', 'Orientation','horizontal'); 
   
end

The shape of third item "cc" is changed:

[madhan ravi]

https://www.mathworks.com/help/matlab/ref/legend.html#bu_sz6u-1 - create a handle for the plot command and follow the instruction in the given link

[shdotcom shdotcom]

@madhan ravi Is it possible to do this without using figure handle?

Also, in my case , the dimensions of plots are not consistent.

I have edited the question

[madhan ravi]

Ok see this example , see if this is what you want:

plot(1:10,'-*r')
hold on
plot(2*(1:10),'-vg')
plot(3*(1:10),'-ob')
h=get(gca,'Children'); % grab all the axes handles at once
legendstr={'aa','bb','cc'};
legend(h([1 3]),legendstr{[1 3]}) % see the second label is skipped withoud changing shape
hold off

Answer 1

[Lucademicus]

You could do it based on the order of appearance of the plots.

Assuming 'aa' is plot first, then 'bb' and then 'cc':

figure;
hold on
plot(rand(4,1),rand(4,1),'r','DisplayName','Red')
plot(rand(4,1),rand(4,1),'g','DisplayName','Green')
plot(rand(4,1),rand(4,1),'b','DisplayName','Blue')

hPlots = flip(findall(gcf,'Type','Line')); % flipped, because the lines our found in reverse order of appearance.
legend_str = {'aa','bb','cc'};
legend(hPlots(2:3), legend_str(2:3), 'Fontsize',10,'Location', 'southoutside', 'Orientation','horizontal'); 

[shdotcom shdotcom]

It is working!. Thank you. But, I could not undestand why my code is working when data size is [10,100] and it does not, when data size [5,200].