'--' linestyle renders poorly in PDFs (but fine onscreen)

Question

Drew Steen 2011-7-1

3
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https://ww2.mathworks.cn/matlabcentral/answers/10681-linestyle-renders-poorly-in-pdfs-but-fine-onscreen

评论： Jan 2017-10-9

When I make a plot using dash-like linestyles and then print the plot to a PDF, the dashes are so small as to be invisible. For example:

x=0:0.1:10;
y=sin(x);
plot(x, y, 'Linestyle', '--');

This looks good onscreen, but when I print to a pdf there are so many dashed per unit length that the line looks continuous. Oddly if I print directly to a physical printer, the dashes look fine.

Any idea whether this is Adobe's problem, or MATLAB's? Or whether I can do anything about it?

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Answer 1

Jan 2011-7-1

5
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https://ww2.mathworks.cn/matlabcentral/answers/10681-linestyle-renders-poorly-in-pdfs-but-fine-onscreen#answer_14700

The PDF is created by using an intermediate EPS or PS file. The conversion of dashed and dotted lines from Matlab to EPS is poor. Solutions:

Dear TMW: This problem is very old and very obvious. The solution looks very straight. So please update the EPS export accordingly. And to reduce the traffic on MATLAB Answers, buy export_fig and include it in the Matlab toolboxes, please.

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Thomas Kirven 2017-10-8

This doesn't work for me. I have dashed lines in a 3d figure. I print the figure as an eps file, then put it through these functions, and the file either comes out unable to be viewed or unchanged.

Jan 2017-10-9

@Thomas: 3D graphics are renders by OpenGL in many cases. Then the created PDF contains a screenshot only and you cannot modify the contents directly. Please open a new thread and explain clearly, what the inputs are, and show an example of the problem as a screenshot. Thanks.

Again: Prefer to open a new thread than to hijack an existing one. This is an advantage for you and for the forum.

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