At 21:17 25/03/2013 -0700, Jason C. Wells wrote:
OK. Take two. Since VLOOKUP for numbers with an
inequality is not meaningful, ...
It will do what you require, I think.
... what I precisely hope to do is this. I hope
that the preformatted columns survive the mailer software.
Give the following columns:
A B C D
--- --- --- ---
1.1 eqn 3 0.10
1.3 6 0.12
1.5 10 0.15
1.7 18 0.18
2 30 0.21
2.2 50 0.25
2.7 80 0.30
3.2 120 0.35
3.7 180 0.40
4.3
4.8
5.3
6.4
7.4
8.4
Compare cells in column A such that:
0 > A1 <= C1
C1 > A1 <= C2
C2 > A1 <= C3
...
I'm hoping you mean:
0 < A1 <= C1
C1 < A1 <= C2
C2 < A1 <= C3
is true. Then return the value of D for the
appropriate row. Repeat for all values of A.
When done, the length of column B will be equal
to the length of column A. B will contain values
of column D. Both C and A will always be sorted.
(Although it would be nice to be able to do this with A being random numbers.)
It seems like I need an array equation, but the
array A is not equal in size to the array in
C. Simple string matching of VLOOKUP is inadequate to the task at hand.
You are still talking of strings with respect to
VLOOKUP(), but it will cope with your numbers too! And it will do your job ...
You have missed the important value zero from
your column C, so please insert it in C1, moving
the other values down. *Do not* move the values
in column D, so that the first value, 0.10, is
now against zero in column C, 0.12 is against 3,
and so on. (It seems that you don't need the
maximum value 180 now in C10, in fact.)
In B1, enter:
=VLOOKUP(A1;C$1:D$9;2)
and fill down column B.
VoilĂ !
This even works with column A values not being
sorted, as you have asked. All that is required
is that column C should be sorted - and that is no problem, of course.
I trust this helps.
Brian Barker
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