>>doc ksdensity
ksdensity
Compute density estimate using a kernel smoothing method
Syntax
[f,xi] = ksdensity(x)
f = ksdensity(x,xi)
ksdensity(...)
ksdensity(ax,...)
[f,xi,u] = ksdensity(...)
[...] = ksdensity(...,'param1',val1,'param2',val2,...)
...........