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Hello, dear TraMineR's users!<br>
<br>
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!<br>
I work on the trajectories of the recipients of the french "Revenu
de Solidarité Active". I have almost 2000 trajectories in my data
frame, and my data cover 9 quarter.<br>
<br>
My problem is the next:<br>
I have some missing values, but with a sens which is not all times
the same:<br>
1. first case: when a missing value for a quarter is between two
normal values for the previous and next quarter.<br>
2. second case: a missing value for a quarter is followed by missing
values for all the next quarters.<br>
<br>
example:<br>
<u>first case:</u> Normal-Normal-Normal-<b>NA</b>-Normal-Normal-Normal-Normal-Normal<br>
<u>second case:</u> Normal-Normal-<b>NA</b>-<b>NA</b>-<b>NA-NA</b>-<b>NA</b>-<b>NA</b>-<b>NA</b><br>
<br>
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.<br>
<br>
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?<br>
<br>
I don't know if I'm clear, and i sorry for my bad English,<br>
<br>
thanking you in advance,<br>
<pre class="moz-signature" cols="72">--
Elie Chosson,
Doctorant contractuel,
Centre de Recherche en Économie de Grenoble (CREG)
Bureau 513
BP 47 - 38040 Grenoble Cedex 9
tel: 04 76 82 59 89 / 06 43 70 99 29</pre>
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