Eliminate Duplicates in a Legend

Hello!

I am trying to plot 27 points that fit into 12 categories and then have a legend showing what symbols are used for each of the categories. I'm probably overcomplicating this whole thing, but here is the code (abbreviated)

figure

for n = 1:num_stopes  % There are 27 of them
    ppv = PPV(n); % Vibration Level
    this_month = month(n); % Month Number
    recep = str2double(regexprep(receptor_list{n},'R','')); % Get Receptor Number. receptor_list is cell array
    switch recep % There are 12 receptors
        case recep_nums(1)
            plot(this_month,ppv,'Marker','o','LineStyle','none','MarkerEdgeColor','k','MarkerFaceColor','r','DisplayName',['Receptor ',num2str(recep)]);
        case recep_nums(2)
            plot(this_month,ppv,'Marker','o','LineStyle','none','MarkerEdgeColor','k','MarkerFaceColor','g','DisplayName',['Receptor ',num2str(recep)]);
        case recep_nums(3)
            plot(this_month,ppv,'Marker','o','LineStyle','none','MarkerEdgeColor','k','MarkerFaceColor','b','DisplayName',['Receptor ',num2str(recep)]);
        case recep_nums(4)
            plot(this_month,ppv,'Marker','o','LineStyle','none','MarkerEdgeColor','k','MarkerFaceColor','m','DisplayName',['Receptor ',num2str(recep)]);
        case recep_nums(5)
            plot(this_month,ppv,'Marker','o','LineStyle','none','MarkerEdgeColor','k','MarkerFaceColor','c','DisplayName',['Receptor ',num2str(recep)]);
        case recep_nums(6)
            plot(this_month,ppv,'Marker','o','LineStyle','none','MarkerEdgeColor','k','MarkerFaceColor','y','DisplayName',['Receptor ',num2str(recep)]);
        case recep_nums(7)
            plot(this_month,ppv,'Marker','diamond','LineStyle','none','MarkerEdgeColor','k','MarkerFaceColor','r','DisplayName',['Receptor ',num2str(recep)]);
        case recep_nums(8)
            plot(this_month,ppv,'Marker','diamond','LineStyle','none','MarkerEdgeColor','k','MarkerFaceColor','g','DisplayName',['Receptor ',num2str(recep)]);
        case recep_nums(9)
            plot(this_month,ppv,'Marker','diamond','LineStyle','none','MarkerEdgeColor','k','MarkerFaceColor','b','DisplayName',['Receptor ',num2str(recep)]);
        case recep_nums(10)
            plot(this_month,ppv,'Marker','diamond','LineStyle','none','MarkerEdgeColor','k','MarkerFaceColor','m','DisplayName',['Receptor ',num2str(recep)]);
        case recep_nums(11)
            plot(this_month,ppv,'Marker','diamond','LineStyle','none','MarkerEdgeColor','k','MarkerFaceColor','c','DisplayName',['Receptor ',num2str(recep)]);
        case recep_nums(12)
            plot(this_month,ppv,'Marker','diamond','LineStyle','none','MarkerEdgeColor','k','MarkerFaceColor','y','DisplayName',['Receptor ',num2str(recep)]);
            
            
    end
    hold on
    
end
legend('show');
ylim([0 2.5]);
ylabel('PPV (in/s)')
xlabel('Month')
title('PPV for Receptors Close to Early Stopes')

Here is the resultant figure and legend:

Thank you for any help!

Doug Anderson

Answer 1

[DGM]

Because you're looping through the list of datapoints and plotting each one individually, there are not 12 objects, but num_stopes objects. The better way to do this would be to plot all the datapoints associated with a given receptor at once. In other words, instead of building a loop structure like this:

for n=1:num_stopes
    % plot this one point
end

do something like

for n=1:num_receptors
    % find all points associated with this receptor
    % plot this subset of points
end

[Douglas Anderson]

Yes! Thank you, makes total sense!!!