Correct syntax for ksdensity() function
2 views (last 30 days)
Show older comments
Hello,
I'm trying to use the kernal smoothing density function
What would the correct syntax be if I'm trying to smooth a vector x, with kernel epanechnikov with a width of 3?
Is it something like this?
[...] = ksdensity(x,kernel,epanechnikov,width, 3)
What would go on the right hand side of the equal sign?
Sincere thanks
John
0 Comments
Answers (1)
Peter Perkins
on 21 Mar 2012
John, all you are missing is quotes:
ksdensity(x,'kernel','epanechnikov','width',3)
BUT: you say, "if I'm trying to smooth a vector", which makes me think that maybe you're thinking that this is kernel smoothing, rather than kernel density estimation. KSDENSITY takes one vector containing a sample from some unknown distribution, and returns an estimate of the density of that distibution. Kernel smoothing, which KSDENSITY doesn't do, is a non-parametric regression method that takes two (or maybe more) vectors.
Hope this helps.
See Also
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!