Below is an example that should run fine. First we create a multi-page PS file:
fname = 'test';
if exist([fname '.ps'], 'file'), delete([fname '.ps']); end
hfig = figure;
for i=1:10
plot(cumsum(rand(100,1)-0.5))
drawnow
print(hfig, '-dpsc2', '-append', [fname '.ps'])
end
close(hfig)
Next we convert it to PDF using Ghostscript, and properly crop the figures:
gs_path = 'C:\Program Files\gs\gs9.07\bin\gswin64c.exe';
gs_opts = '-dBATCH -dNOPAUSE -q';
% ps2pdf
cmd = sprintf('"%s" %s -sDEVICE=pdfwrite -dPDFFitPage -o %s %s', ...
gs_path, gs_opts, [fname '.pdf'], [fname '.ps']);
disp(cmd); system(cmd);
% get bbox
cmd = sprintf('"%s" %s -sDEVICE=bbox %s', ...
gs_path, gs_opts, [fname '.pdf']);
disp(cmd); [~,out] = system(cmd);
out = textscan(out, '%s', 'Delimiter','');
bbox = regexp(out{1}, '^%%BoundingBox: (\d+) (\d+) (\d+) (\d+)','tokens','once');
bbox = str2double(vertcat(bbox{:}));
bbox = [min(bbox(:,1:2)) max(bbox(:,3:4))];
% crop to bounding box
cmd = sprintf(['"%s" %s -o %s -sDEVICE=pdfwrite' ...
' -dDEVICEWIDTHPOINTS=%d -dDEVICEHEIGHTPOINTS=%d -dFIXEDMEDIA' ...
' -c "<</PageOffset [-%d -%d]>> setpagedevice" -f %s'], ...
gs_path, gs_opts, [fname '_cropped.pdf'], ...
bbox(3)-bbox(1), bbox(4)-bbox(2), bbox(1), bbox(2), [fname '.pdf']);
disp(cmd); system(cmd);