try something along the lines of:
========================
dat=. 1 2 5 5 5 5 4 3 5 5 6
dat E. 5 5
0 0
5 5 E. dat
0 0 1 1 1 0 0 0 1 0 0
0 1 0 E. 5 5 E. dat
0 0 0 0 0 0 0 1 0 0 0
=======================
David Vincent-Jones wrote:
I am trying to locate specific patterns of a prescribed length within data.
For instance I might want to find occurrences of exactly 2 fives in the
following
dat=:0 7 8 8 8 9 2 2 5 5 5 3 8 8 8 0 0 5 5 9 6 8 8 8 8 4 0 6 4
2 5 pattern dat
17
the result should ignore the earlier '5 5 5'
Now looking for a pattern of exactly 3 eights
3 8 pattern dat
2 12
Again the 4 eights would be ignored
I have been trying to use E. but have been confounded by finding a
'universal bounding' of each specific pattern.
Ideas and help would be appreciated.
David
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