[R] Error in expand.covs: 'data' must be an 'msdata' object

Kadriye Kaplan silentscream_01 at hotmail.com
Thu Nov 24 11:09:31 CET 2011


I have transformed a Lexis object to a msdata object and tried to apply
expand.covs() on this object, but I got an error message: "Error in
expand.covs... 'data' must be an 'msdata' object". I need to change the
class of data to msdata, but don't know how to do it. 

Thanks in advance,

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