vlookup and IF function

[cambridge]

I am trying to use vlookup and nested IF functions, but cannot get it to
work-maybe I am not using the right funtions. I have a number that I want to
look up and if it is not found, I want to add 1 to it and look that up. I
only need to do it about 5 times so I thought if I used vlookup & nested IF's
I could get it. Here is example:

A
1 2
2 5
3 6
4 7
I want to start with looking up 3 and if it is there, return 3 but if it
isn't, add 1 to the 3 and look it up and return it, and if it isn't add 2 to
the 3, look it up and return it and if it isn't, return 0.

Any ideas?

 

[Frank Kabel]

Hi
if your data is sorted ascending try:
=VLOOKUP(3,A1:A20,1,TRUE)

 

[cambridge]

That is the basic formula for vlookup, but if it doesn't find 3 in the data,
I want to add 1 to the 3 and have it look for 4. This is what I have tried
and it doesn't totally work
=if(vlookup($d3,a1:a20,1,false)=d3,d3,if(vlookup(($d3+1),a1:a20,1,false)=(d3+1),(d3+1),0)

This formula actually works but if I want to nest another IF statement for
d3+2, it tells me I have too many arguements. I would like to nest up to 5
times.

 

[Frank Kabel]

Hi
try the formula. It should find the value that is equal or larger than
3 (if your data is sorted ascending)

 

[cambridge]

This does not work or I am doing something wrong. Let's start over. This is
what I have:
A
1 3
2 4
3 6
4 7
5 9

In cell C1, I want to look up 1, and if it doesn't find 1, add 1 to the 1
for 2 and lookup 2, if it finds it, return it and if it doesn't find it, add
2 to the 1 and look up 3, if it finds 3, return 3 otherwise add 3 to the 1
and continue this up to 5 times until it does find a number. And then in C2,
I want it to take the value in C1, add 1 to it, look for it and if it doesn't
find it, add 2 to it and look for and continue this on for up to 5 times
until it finds the number. The formula you sent is a basic vlookup that will
not do this unless I am totally missing something here. There are gaps in
the numbers I am looking in and this is why I am doing this and I think this
is why your formula will not work.

 

[Frank Kabel]

Hi
now I see
in C1 try the following array formula (entered with CTRL+SHIFT+ENTER):
=INDEX(A1:A100,MATCH(1,(A1:A100>=1)*(A1:A100<=6),0))

in C2 enter:
=INDEX(A1:A100,MATCH(1,(A1:A100>=C1+1)*(A1:A100<=C1+5),0))

Still requires the data to be sorted ascending