Smoothing data with sgolay filter
3 次查看(过去 30 天)
显示 更早的评论
Hi i have a question, if i have a code like this before,
smootheddata = smoothdata(z,"sgolay", "SmoothingFactor",0.25 );
how i exprese it in sgolay function ? Thank you
0 个评论
回答(2 个)
Star Strider
2022-9-27
The default order for the 'sgolay' option is 2 (quadratic), however the 'SmoothingFactor' controls the window length (framelen in the sgolayfilt documentation), it has no exact definition, so an exact translation to sgolayfilt parameters is not possible for it.
For sgolayfilt I generally choose an order of 3 and an initial framelen value of 5% of the signal length. I then adjust the framelen value to get the result I want. It is possible to control these in the smoothdata function by setting the 'Degree' and window parameters.
0 个评论
另请参阅
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!