[Traminer-users] How to treat in different ways different types of missing values?
elie.chosson at upmf-grenoble.fr
Tue Sep 25 12:13:46 CEST 2012
thank you very much!
Decidedly, Traminer has all the answers! I'm going to see that now...
Le 25/09/2012 12:00, traminer-users-request at lists.r-forge.r-project.org
a écrit :
> Hi Elie,
> There is a way of handling missing values differently depending on where
> they appear in the sequences by using the "left", "right" and "gaps"
> options when defining your sequence object with 'seqdef'. And it seems
> that you can solve your problem by setting these options.
> Everything is explained in details in the manual page of 'seqdef', in
> the user's guide and in our paper published in the Journal of
> Statistical Software. All this documentation that we wrote especially
> for you the TraMineR users is freely available on our website or
> directly from within R.
> All the best,
> Le 21. 09. 12 11:04, Elie Chosson a ?crit :
>> > Hello, dear TraMineR's users!
>> > I'm preparing my Ph.D in economy, and I use for it R and the TraMineR
>> > package. It's a powerful, useful and very nice tool!
>> > I work on the trajectories of the recipients of the french "Revenu de
>> > Solidarit? Active". I have almost 2000 trajectories in my data frame,
>> > and my data cover 9 quarter.
>> > My problem is the next:
>> > I have some missing values, but with a sens which is not all times the
>> > same:
>> > 1. first case: when a missing value for a quarter is between two
>> > normal values for the previous and next quarter.
>> > 2. second case: a missing value for a quarter is followed by missing
>> > values for all the next quarters.
>> > example:
>> > _first case:_
>> > Normal-Normal-Normal-*NA*-Normal-Normal-Normal-Normal-Normal
>> > _second case:_ Normal-Normal-*NA*-*NA*-*NA-NA*-*NA*-*NA*-*NA*
>> > In the first case I would like to treat the NA state in the same way
>> > than the following state, and in the second case the NA state is
>> > correct, and I can consider it like a outing of the policy than i study.
>> > In your mind, their is possibilities with TraMineR to do this? In the
>> > seqdef function, can I specify a rule like it? May be in defining the
>> > labels and the codes? Can I change a state in a trajectory with a
>> > logical function?
>> > I don't know if I'm clear, and i sorry for my bad English,
>> > thanking you in advance,
>> > --
>> > Elie Chosson,
>> > Doctorant contractuel,
>> > Centre de Recherche en ?conomie de Grenoble (CREG)
>> > Bureau 513
>> > BP 47 - 38040 Grenoble Cedex 9
>> > tel: 04 76 82 59 89 / 06 43 70 99 29
>> > _______________________________________________
>> > Traminer-users mailing list
>> > Traminer-users at lists.r-forge.r-project.org
>> > https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/traminer-users
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