Powershell Equivalent Command to set people picker.

I am looking for the Powershell command equivalent to the below stsadm? I need to restrict the scope of the search to only a site collection.



Thanks

stsadm -o setproperty -propertyname peoplepicker-onlysearchwithinsitecollection -pv yes -url "http://intanet.domain.net/sitename"