I am unclear on what you are trying to do. If I understand
your description then I wonder, does the following define
what you want?
]x =. ?. 20$20
6 15 19 12 14 19 0 17 0 14 6 18 13 18 11 12 18 0 10 2
]y =. ?. 10$10
6 5 9 2 4 9 0 7 0 4
<@I. y =/ x
+----+++--+++------++------++
|0 10|||19|||6 8 17||6 8 17||
+----+++--+++------++------++
If so, then the question is how to make it work with large
x and y vectors.
- joey
At 11:50 +0930 2007/04/03, Saunders, John (TQEH) wrote:
Hi guys I'm using the below loop to match 2 lists of numbers it
generates a boxed list of the index of matches,(the nth item in the
boxed list xs contains the index of the matches in x of the nth item of
y) there can be multiple matches or none; the lists contain around
30,000 items and this will increase so it's slow and I'm sure its not a
good way to do it could anyone please suggest improved methods.
match =: 3 : 0
for. y
do.
index =: index + 1
if. index = #y do. break. end.
x =: (I. ( dex { y) E. ,x)
xs =: xs,(<x)
end.
)
thankyou
John Saunders
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