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Question about transcan() status message

To: S-News <s-news@wubios.wustl.edu>
Subject: Question about transcan() status message
From: Kim Elmore <Kim.Elmore@noaa.gov>
Date: Tue, 11 Dec 2007 16:52:37 -0600
User-agent: Thunderbird 2.0.0.9 (Windows/20071031)
I have a data set with missing data for which I wish to perform imputations. I'm very new at imputing data, but I've been looking into transcan() and it seems to have many agreeable attributes, so I tried it. However, I get the following message:

Fewer than 3 unique knots.  Frequency table of variable:
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
1189 13 4 14 9 7 7 6 2 3  4  7  4  3  3  2  2  1  1  1  1  3  2  3  3  2  3

27 28 29 30 31 34 35 36 37 41 42 43 46 48 49 50 51 52 53 57 58 61 62 63 64
 1  2  4  1  2  1  2  1  1  2  1  1  2  3  1  1  1  1  1  1  1  2  1  1  1

65 66 70 72 73 74 75 78 83 88 94 97 99 114 119 180 182 267
 1  1  1  3  1  1  1  1  1  1  1  1  2   1   1   1   1   1

All of the data are continuous numeric. I have 21 variables (columns) and 1356 observations (rows). I believe the NAs to be randomly distributed, but some variables have many more missing values than others.

How do I interpret what transcan() is telling me?

Kim Elmore

--
Kim Elmore, Ph.D. (PP SEL/MEL/Gllider, N5OP, 2nd Class Radiotelegraph, GROL)
"All weather is divided into three parts: Yes, No and Maybe. The greatest of these 
is maybe." -- The original Latin appears to be garbled.


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