I too hadn't realized the value of the last parameter being 1 (meaning
it takes the next number below). I had trouble getting the formula to
work until I realized I had pasted the array from the email and some of
the numbers were formatted as text, others not, so I was getting almost
all #N/A. Then I fixed it and it works. Thanks Brian. Excellent little
exercise for me to learn more about VLOOKUP.
Carl
On 3/26/13 12:48 AM, Brian Barker wrote:
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.
Voilà!
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
--
Carl Paulsen
8 Hamilton Street
Dover, NH 03820
(603) 749-2310
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