How do I improve the image quality of a plot in a published pdf or html?
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Whether I publish directly as a pdf or from html to pdf, the image quality of the plots is horrible. Can anyone help me out with this?
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Nathan Jessurun
2018-12-10
编辑:Nathan Jessurun
2018-12-10
Are you using the vector export option? This makes your graphs and other figures scale perfectly with different zooms. Try this:
fig = figure(1);
plot(1:10, 1:10);
print(fig, 'myFileName.pdf', '-dpdf','-r0')
Unfortunately, this saves the figure at the default figure size. You can change this, though. I made a method to do this -- you can change the scaling parameters as needed to produce a better output.
function saveFig(name, figNum)
fig = figure(figNum);
allAxs = findall(gcf, 'type', 'axes');
fig.Units = 'inches';
fig.PaperPositionMode = 'auto';
fig.Position = [1 1 16 4.5];
fig.PaperUnits = 'inches';
pos = fig.Position;
fig.PaperSize = [pos(3), pos(4)];
for ax = 1:length(allAxs)
% Trim whitespace around figures
outerpos = allAxs(ax).OuterPosition;
ti = allAxs(ax).TightInset;
left = outerpos(1) + ti(1);
bottom = outerpos(2) + ti(2);
ax_width = outerpos(3) - ti(1) - ti(3);
ax_height = outerpos(4) - ti(2) - ti(4);
allAxs(ax).Position = [left bottom ax_width ax_height];
end
print(fig, name, '-dpdf','-r0')
end
Basically you pass the file name and figure number to the function, and it stretches the x axis for signal plots and saves the file as a pdf vector graphic.
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