Hello,
The example shows a sequence of songtypes a bird has sang.
The entire list contains several thousand songs which the bird has produced consecutively.
Is there any convenient way in R to produce a contingency table which shows how often a special song type was sang after a special other songtype? Or within a determined frame of e.g. 10 consecutively produced songs?

Example:

Nr	Songtype
1	S1
2	S2
3	S3
4	S1
5	S1
6	S2
7	S4

Contingency table:

S1	S2	S3	S4 subsequent songs
S1	1	2	0	0
S2	0	0	1	1
S3	1	0	0	0
S4	0	0	0	0
Preceding  
Songs


Greetings
Michael 









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