Nested IF Limits

[ronnomad]

My spreadsheet has a calculation that compares material available (both in
inventory and ready to ship to a production facility) to material required
for production. The ready to ship materials are packed in containers of
varying quantites. What the following formula is supposed to do is count the
number of containers needed for each material so that the total (in inventory
and shipable) is equal to or greater than the quantity required for
production. There are 60 different materials (rows).

=IF(K37<0,IF(L37>=K37*-1,COUNT(L37),IF((L37+M37)>=K37*-1,COUNT(L37:M37),IF(SUM(L37:N37)>=K37*-1,COUNT(L37:N37),IF(SUM(L37:O37)>=K37*-1,COUNT(L37:O37),IF(SUM(L3737)>=K37*-1,COUNT(L3737),COUNT(L37:AC37)))))),0)

Column K shows the quantity of material needed (and is shown as a negative
number).
Columns L-AC show the quantity of material in each container.

I can ship a limit of 24 containers at a time but, if a particular material
requires more than 7 containers, this formula shows the total number of
continers rather than the number needed.

I've looked at some of the solutions that have been offered for similar
problems but did not see one that fit what I was seeking.

Thanks,

ronnnomad

 

[loudfish]

=IF(K37<0,IF(L37>=K37*-1,COUNT(L37),IF((L37+M37)>=K37*-1,COUNT(L37:M37),IF(SUM(L37:N37)>=K37*-1,COUNT(L37:N37),IF(SUM(L37:O37)>=K37*-1,COUNT(L37:O37),IF(SUM(L3737)>=K37*-1,COUNT(L3737),COUNT(L37:AC37)))))),0)

I can ship a limit of 24 containers at a time but, if a particular material
requires more than 7 containers, this formula shows the total number of
continers rather than the number needed.

Here's a non-nested alternative:

=MIN(IF(L37>K37*-1,1,999),IF(SUM(L37:M37)>K37*-1,2,999),IF(SUM(L37:N37)>K37*-1,3,999),IF(SUM(L37:O37)>K37*-1,4,999),IF(SUM(L3737)>K37*-1,5,999),IF(SUM(L37:Q37)>K37*-1,6,),........)

The MIN will find the lowest value in the sequence (ie the first time
there is enough units). If this resolves to 999, then you don't have
enough units even taking all 24 containers.

Caveat: If you don't put a negative value in K37, results will be
unexpected.

HTH

Andrew

 

[ronnomad]

Andrew,

I guess I needed to supply one more piece of information. The quantity of
material in columns L-AC may be less than the number in K. You suggestion
works when the total in L-AC is greater than K, but gives no response if the
quantity is less. I want to see the number of containers even if I cannot
fulfill the total need.

Ron

 

[loudfish]

I want to see the number of containers even if I cannot
fulfill the total need.

.... then change the last value to be summed from a conditional

IF(SUM(L37:AC37)>K37*-1,24,999

to an absolute:

24

That way, if there are not enough, it will still return 24.

HTH

Andrew

 

[ronnomad]

Sorry, I guess because I know what I want, I not being clear enough. If for
the first item I need 1000 pcs but I only have 700 pieces in two containers,
the formula answer ( for that row) should be two. I rarely (if ever) send 24
containers of one item. The shipment is a combination.

Ron

 

[loudfish]

Sorry, I guess because I know what I want, I not being clear enough. If for
the first item I need 1000 pcs but I only have 700 pieces in two containers,
the formula answer ( for that row) should be two. I rarely (if ever) send 24
containers of one item. The shipment is a combination.

Sorry for delay. I still don't get your requirements - can you give me
a more explanatory example?

The formula, as it stands, will give you the number of containers
required (not the number of pcs) to fulfil each particular request.

e.g. 700 in container 1, 700 in container 2, requirement is for 1000
pcs, therefore answer is 2 (more explicitly, answer is 700 from
container 1 plus 300 from container 2). The formula I already gave
should return 2 in this case.

Andrew

 

[ronnomad]

Andrew,

Your formula does work but only if the total quantity available to ship is
greater than the quantity needed. If, as in the example I gave, the quantity
available (700 pcs) is less than the quantity needed (1000 pcs), the formula
result is 0 (zero). In this instance the answer should be 2 because 2 is the
total number of containers available even though the quantity is less than
what is needed.

And don't give a second thought about the time. I wasn't working yesterday.

Thanks,

Ron

 

[loudfish]

Your formula does work but only if the total quantity available to ship is
greater than the quantity needed. If, as in the example I gave, the quantity
available (700 pcs) is less than the quantity needed (1000 pcs), the formula
result is 0 (zero). In this instance the answer should be 2 because 2 is the
total number of containers available even though the quantity is less than
what is needed.

The only condition where the quantity available (700 pcs) is less than
the quantity needed (1000 pcs) should be once you have tried the last
container (the 24th one).

The second formula I gave should return 24 even if there are not
enough pieces in all 24 containers:

.... then change the last value to be summed from a conditional
IF(SUM(L37:AC37)>K37*-1,24,999
to an absolute:
24

So let me restate back as a question. Why should your example above
return 2 instead of moving on to the 3rd container? (and the
4th, ..... until it either finds enough pieces, or reaches the 24th
container)

HTH

Andrew

 

[ronnomad]

The formula should return 2 because only 2 containers are available. If, in
the example, this particular part is packed 350 to a container and I need
1000, and there were an unlimited number of containers available, the formula
should return 3. However, if there were only 2 containers avaialble, it
should return 2. Please note that this is only one of many items to be
shipped and the shipment (in every instance) is an aggregate of all the
items. I may have 2 containers of the first item, 5 of the second, 3 of the
third and so on. Although the number of containers for an individual item is
important, the total number of containers, for all items combined, cannot
exceed 24. If it does, then I have to 'cherry pick' and decide what to leave
off.

Although I don't believe this is critical, I should note that the materials
in question come off a production line and the final process results in each
container quantity being variable. Because of this, I should also note that
I use a second formula (in essence a duplicate of the first but instead of
counting containers it sums the quantity in the containers). So, going back
to the example of unlimited containers, the result shoud be 3 containers and
1,050 pcs.

My original formulas sufficed so long as no single item required more than 7
containers.