How could I get a smooth curve by "plot" function?
18 views (last 30 days)
Show older comments
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.
0 Comments
Answers (3)
Jan
on 28 Apr 2012
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
on 27 Apr 2012
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')
5 Comments
Walter Roberson
on 28 Apr 2012
You should experiment with using the File Exchange contribution "export_fig".
Richard
on 27 Apr 2012
you could use the smoothLine function from the file exchange:
3 Comments
Jan
on 28 Apr 2012
The SmoothLine function modifies the values between the measurement points. In a scientific paper this can be an important error.
Berks
on 25 Dec 2014
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.
See Also
Categories
Find more on Linear and Nonlinear Regression in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!