Area plot common legend

Hi!

I am trying to plot my data with an area plot and I have several subplots for several countries. I just wanted to know how to set a common legend for all subplots describing each color of the plot. Thanks!

[Luna]

What have you done so far?

[Hasan Isomitdinov]

figure(1)
for i=1:11
    subplot(4,3,i)
    area(dates,[global(:,i),regional(:,i),local(:,i)],'FaceColor','flat')
    a11 = sprintf('%s',country{i});
    title(a11);
legend({'World','Regional','Local'},'Location','SouthOutside');
    end

But this is giving me a legend for each plot separately.

Answer 1

[Star Strider]

Some version of this idea could work:

dates = 1:5;                                                        % Create Data
G = rand(5, 11);                                                    % Create Data
R = rand(5, 11);                                                    % Create Data
L = rand(5, 11);                                                    % Create Data
country = num2cell('A'+(0:10));                                     % Create Data

figure(1)
for i=1:12
    if i < 12
        subplot(4,3,i)
        area(dates,[G(:,i),R(:,i),L(:,i)],'FaceColor','flat')
        a11 = sprintf('%s',country{i});
        title(a11);
    elseif i == 12
        subplot(4,3,i)
        i = 11;
        area(dates,[G(:,i),R(:,i),L(:,i)],'FaceColor','flat')
        set(gca,'Position',[7.5 1.25 1 1]*0.1)
        set(gca, 'Visible','off')
        legend({'World','Regional','Local'},'Location','best');
    end
end

Run this first. (I am using R2018b.)

Then experiment with your own data to get the result you want.

[Hasan Isomitdinov]

Thank you for your response!

Here is a little tweaked version I opted for instead which is giving me the result I wanted with a row legend underneath the figure. Any suggestions on optimizing this line would still be appreciated.

clear all;
dates = 1:5;                                                        % Create Data
G = rand(5, 11);                                                    % Create Data
R = rand(5, 11);                                                    % Create Data
L = rand(5, 11);                                                    % Create Data
country = num2cell('A'+(0:10));                                     % Create Data

figure(1)
for i=1:11
    subplot(4,4,i)
    area(dates,[G(:,i),R(:,i),L(:,i)],'FaceColor','flat')
    a11 = sprintf('%s',country{i});
    title(a11);
    end
legend=columnlegend(3,{'World','Regional','Country-specific'});
set(legend,'Position',[1.1 1.3 7 1]*0.1);

[Star Strider]

My pleasure.

I cannot run that because the ‘columnlegend’ variable does not exist in the code you posted. Also, ‘columnlegend’ is not a MATLAB function.

If my Answer helped you solve your problem, please Accept it!