I would probably collect the data in the loop instead and then call plot outside of the loop. Could use something like this:
d=dir(fullfile(myFolder, '*.txt'))
for k = 1:numel(d)
data=dlmread(fullfile(myFolder,d(k).name));
x{k} = data(:,4);
y{k} = data(:,5);
end
figure;hold on
h = cellfun(@plot,x,y,'uniformoutput',1);
xlim([0 7])
ylim([0 4])
legend(h,{d.name})
If you really want to label the data inside the loop then you can set the displayname:
d=dir(fullfile(myFolder, '*.txt'))
figure, hold on
for k = 1:numel(d)
data=dlmread(fullfile(myFolder,d(k).name));
h(k) = plot(data(:,4),data(:,5),'LineWidth',3,'displayname',d(k).name);
xlim([0 7])
ylim([0 4])
end
legend
