[R] confused about range of 'd' in fracdiff package

Kai Arzheimer arzheimer at politik.uni-mainz.de
Sat Mar 31 16:54:08 CEST 2001


Dear all,

I want to assess the question whether several time series of parties'
respective popularities are fractionally integrated. The "fracdiff"
package seems to be an obvious choice. What confuses me is that the
'd' parameter estimated by fracfiff seems to be bound to a range from
0 to 0.5. From what I have read I would assume it should be allowed to
vary between 0 and 1.

Any help would be very much appreciated.

Kai
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