How could I get a smooth curve by "plot" function?
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I find that when I draw a line using plot function, the line is not smooth enough and have jagged edge. I have tried enlarging the data density of points, and still nothing has been improved. So, what should I do to get a smooth curve? Is this just a preference setting problem? Any suggestion will be helpful, and thank you very much.
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Jan
2012-4-28
To insert a picture in a paper I'd suggest the Painters renderer and an export to EPS. While the preview picture e.g. in the screen view of Word looks rough, the lines are smooth when printed to paper or to a PDF.
The suggested export_fig does exactly this also, but with a lot of extra features.
The OpenGL renderer can export pixel images only, while Painters exports vector graphics also.
Walter Roberson
2012-4-27
There is no preference setting: the smoothness of the curve depends upon the resolution of the data and upon the amount of zooming that one has done.
That said, you may wish to experiment with the three different renderers, and in particular with
set(gcf, 'renderer', 'opengl')
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Walter Roberson
2012-4-28
You should experiment with using the File Exchange contribution "export_fig".
Richard
2012-4-27
you could use the smoothLine function from the file exchange:
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Jan
2012-4-28
The SmoothLine function modifies the values between the measurement points. In a scientific paper this can be an important error.
Berks
2014-12-25
There is nothing non-scientific about using SmoothLine. It only changes the interpolation between consecutive points from linear to non-linear - it is an interpolation either way. If you don't want to guess values between points, don't draw a line.
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