How to Output Accurate PDF from Matlab figure
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Hi everyone:
For some reason, I need to plot the mask of a microfluid device in Matlab, which consists of many posts separated by certain distance The plotting process is easy but when I tried to 'print' it into PDF file, the image was distorted (circles are not round, and they have obvious defect on them), and the spacing was not right(shortened).
I've tried function 'rectangle', code like:
function drawFilledCircle (center_x, center_y, radius)
%%Draw a filled circle
xc = center_x; yc = center_y;
r = radius;
x = r*sin(-pi:0.01*pi:pi) + xc;
y = r*cos(-pi:0.01*pi:pi) + yc;
fill(x, y, [0,0,0]);
and even a function called 'filledCircle' which I found on fileexchange.
But I always got the wrong thing. I don't know what I can do to fix it.
Please help.
P.S. I attached the original matlab figure and the printed PDF for references.
P.S.2 I've also tried to output them into other formats like EPS, but even EPS doesn't look right.
4 commentaires
lvn
le 19 Mar 2014
Could you post the complete code that would reproduce test.fig? I would like to see if I manage to export it correctly.
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lvn
le 20 Mar 2014
The problem with the spacing is in fact a problem of the line around the circle. Because you work on such small scales, it determines the size of the circle! This solves it I think. In your code change the rectangle functions to
rectangle('position',[position_x + index*(diameter + distance), position_y, diameter, diameter],'curvature',[1,1],'FaceColor',[0,0,0],'LineStyle','none');
and then Jan Simon's export print(gcf, 'test.eps', '-dpsc2', '-r1200', '-noui').
After conversion to pdf, the result looks ok to me (see attached).
3 commentaires
Plus de réponses (4)
Chad Greene
le 18 Mar 2014
I highly recommend switching to export_fig instead of using print. Here's export_fig: http://www.mathworks.com/matlabcentral/fileexchange/23629-exportfig
Oliver Woodford, the author of export_fig has a quite helpful and succinct site with plenty of picture examples and troubleshooting tips here: https://sites.google.com/site/oliverwoodford/software/export_fig
Does the attached pdf look correct?
4 commentaires
Chad Greene
le 18 Mar 2014
Oh, interesting. I see the problem now, but is this a pdf issue, or an issue with the filled circle function? Perhaps simply creating a scatter plot and setting the size of the markers would fix it? http://www.mathworks.com/matlabcentral/answers/101738
Chad Greene
le 19 Mar 2014
Frank,
Follow the circles command with axis equal to ensure the circles don't get squashed.
2 commentaires
Jan
le 19 Mar 2014
This creates a perfectly looking EPS and after a conversion the resulting PDF is fine also:
print(gcf, 'test.eps', '-dpsc2', '-r1200', '-noui')
Increasing the resolution to 1200 makes the difference.
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