Error using saveas (line 138)

[advanpix]

Please create 'pngfigs' and 'figs' directories before writing files there (in produce_perfprof).

Otherwise scripts generates error:
Invalid or missing path: pngfigs/expm_mp_perfprof_noherm_multi_0064

Corresponding code in produce_perfprof:

 % save .png
   if png_out
       filename = sprintf('pngfigs/expm_mp_perfprof_%s', filename_suffix);
       saveas(gcf, filename, 'png');
   end

    % tikz
    if tikz_out
        filename = sprintf('figs/expm_mp_perfprof_%s.tikz', filename_suffix);
        matlab2tikz(filename, 'showInfo', false);
    end