clear all; close all;
files = dir('*.mat');
Nfiles = length(files);

colors = 'brkgmc';
etas = cell(1,Nfiles);
for F = 1:Nfiles
    load(files(F).name);
    color = colors(mod(F-1,length(colors))+1);
    plot(1:Niter,E,strcat(color,'.-'),'MarkerSize',16); hold on;
    etas{F} = strcat('\eta = ',num2str(eta));
end
set(gca,'FontSize',16);
legend(etas,'Location','NorthEast');
grid on;
xlabel('Iteration');
ylabel('Error (including regularization)');