Markov transition matrices , missing transitions for certain years
To keep the table dimensions the same, try changing the columns to factors... boxes$y97<-factor(boxes$y97, 1:4) boxes$y98<-factor(boxes$y98, 1:4) boxes$y99<-factor(boxes$y99, 1:4) ...
table(boxes$y98, boxes$y97)
1 2 3 4 1 1 0 1 0 2 0 0 0 0 3 0 0 0 0 4 1 0 0 1
table(boxes$y99, boxes$y98)
1 2 3 4 1 1 0 0 1 2 0 0 0 0 3 0 0 0 0 4 1 0 0 1 Chris
Abby_UNR wrote:
My problem is that there are 16 possible transitions, but not all possible transitions occur at each time step. Therefore, don't think I could do something easy like create a table for each time step and add them together, for example:
t1.boxes <- table(boxes$y98, boxes$y97) t1.boxes
1 3 4
1 1 1 0
4 1 0 1
t2.boxes <- table(boxes$y99, boxes$y98) t2.boxes
1 4
1 1 1
4 1 1
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