Scatter and legend functions are not working well with each other, when working with Export Setup.

With the code given below to create a scatter plot and edit the legend marker size:

    b=figure;
    scatter(LE,pred_D,300,'b','o');
    hold on;
    scatter(LE,measured_D,300,'r','d');
    [~, hobj, ~, ~] = legend({'Predicted','Measured'},'Fontsize',12,'FontName', 'Arial','Location','Best');
    M = findobj(hobj,'type','patch');
    set(M,'MarkerSize',sqrt(600));
    xlabel('$E^*/\sqrt{v^*}$','Interpreter','latex');
    ylabel('Melt pool depth (μm)');
    set(gca, 'FontName', 'Arial', 'FontSize', 12);

I am able to obtain the following output:

I intentionally have these larger marker sizes as Matlab seems to reduce them drastically when I use settings inside of File>Export Setup such as the ones given below:

These "Export Setup" settings make the scatter points ready for publication, but the legend seems to misbehave (changes size and marker thickness) as shown below:

ææ

The same Export Setup settings work well with the gscatter code:

g=figure;
hold on;
pPlot=gscatter(v_star,E_star,melting_mode,'kbrm','so^d',20,'on','Dimensionless Velocity','Dimensionless Heat');
l= findobj(gcf,'tag','legend'); set(l,'location','northwest');
[hleg,att] = legend('show');
set(gca,'xscale','log')
set(gca,'yscale','log')
xlim([1 10])
ylim([10 200])

with before/after "Export Setup" images shown below:

Answer 1

[Shraddha Jain]

Hi Sagar,

You are not able to modify the properties of legend while displaying scatter plot because of the way the legend object has been created in the code below,

[~, hobj, ~, ~] = legend({'Predicted','Measured'},'Fontsize',12,'FontName','Arial','Location','Best');

If you replace the above code with,

legend({'Predicted','Measured'},'Fontsize',12,'FontName','Arial','Location','Best');

the changes made in the Export Setup > Fonts of the MATLAB Figure will be reflected in the legend as well.

Hope this helps!

[Sagar D Patel]

Thanks, Shraddha! This does work!