Why do lines look blurry with linewidth 1 in R2017a?

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KAE 2017-6-19

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https://ww2.mathworks.cn/matlabcentral/answers/345336-why-do-lines-look-blurry-with-linewidth-1-in-r2017a

评论： Bob Blaine 2017-7-21

I am using R2017a and when I plot lines with linewidth of 1, they appear blurry or pixelated, as in the screenshot below. How can I fix this so the lines look crisp? I suspect it is not Matlab but rather some operating system setting (Windows 10), but any help would be appreciated.

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Answer 1

Mudambi Srivatsa 2017-6-26

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https://ww2.mathworks.cn/matlabcentral/answers/345336-why-do-lines-look-blurry-with-linewidth-1-in-r2017a#answer_272034

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You might have to switch to 'opengl' hardware mode for graphics smoothing functionality. To do so, you can run the following code in MATLAB command window:

opengl hardware

Further, you can use the following settings to turn on line smoothing (if disabled earlier) in MATLAB:

set(0,'DefaultLineLineSmoothing','on');
set(0,'DefaultPatchLineSmoothing','on');
opengl('OpenGLLineSmoothingBug',1);

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KAE 2017-6-27

These tips worked, thanks.

Bob Blaine 2017-7-21

Line smoothing was deprecated in 2014b, so I suspect that the only one that really changes anything is the first suggestion.

I think that the reason that you are seeing this change is that MathWorks found some issues or instabilities with your graphics hardware/driver combination and felt it was better to emulate graphics on software, which doesn't support anti-aliasing. You might want to try updating your graphics driver, if possible as this usually also solves the problem.

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