Export figure using print with variable as the file name

x1=1:1:1000;
check = rand(1000,35);
cmap = hsv(5);
for K = 1 : 5
    thiscolor = cmap(K,:);
    figure
    for J = K:5:35
        plot(x1,check(:,J), '-o','color', thiscolor);
        grid on
        grid minor
        hold on
    end
   set(gca,'fontweight','bold','FontSize',25)
   print(gcf,'E%d.png',K,'-dpng','-r600');  %Here is the problem
end

How to export the figure with K as the variable

Answer 1

[Adam Danz]

Use exportgraphics (or another function export function, if needed) and define the filename using sprintf.

Example:

fig = figure(); 
% do your plotting here

filename = sprintf('E%d.png', k);
exportgraphics(fig,filename,'Resolution',600)

Alternatively,

filename = string(k);

[Miraboreasu]

Thank you so much!

Answer 2

[Adam]

The problem with this code is that the print function is not being used correctly. The first argument to print should be the file name to save the plot to, but in this case it is the handle to the figure object that is being plotted. The file name should be specified as the second argument, using the '-f' option.

To fix the problem, you can change the line

print(gcf,'E%d.png',K,'-dpng','-r600');

TO

print('-f','E%d.png',K,'-dpng','-r600');

[Adam Danz]

The leading figure handle argument is supported: print(fig,___)

The K is the problem since it is not part of the filename.