?
Solved

Problem with nested IF loop in Excel

Posted on 2011-02-15
6
Medium Priority
?
430 Views
Last Modified: 2012-05-11
Hi all

I am learning Excel and I can sometimes apply what I have learned at work.

Here is my problem:
I wrote a formula with several loops and was told by Excel that the formula is too long. I later read that there cannot be more than six IFs in a formula.

Please let me explain what I would like to accomplish:

The spreadsheet is a simple inventory spreadsheet.The formula in the last sheet will be used in the original inventory file.

There is one sheet for each month, the last sheet being the annual overview.
The last sheet should display the beginning inventory: The item might be added in January or sometime during the year.
The items will not be added by me to the spreadsheet. There might be empty rows and the items might not be ordered. Short: It will look like a mess.
There might be as many as 200 rows.

This is my idea:

1

I went to the sheet "Inventory"

2

In cell C2 I set a formula with IF() and LOOKUP() to search for the Products (A and B) in the month of January

3

I used ISNA() to check for a match.

4

If there is a match, return the value in column C (the inital stock)

5

Otherwise, go to the next month (February, March etc).and do the same search
Is there any other way to solve this problem? I read that I could use SUMPRODUCT() but that did not work. If this cannot be done with a formula, would it be possible to write a custom function? I have written basic VBA code before but I have never custom functions.

I really appreciate your help as I can learn and have learned new ways to write my formulas.

Massimo

Untitled-1.gif
Inventory-Question.xls
0
Comment
Question by:Massimo Scola
  • 3
  • 2
6 Comments
 
LVL 24

Expert Comment

by:StephenJR
ID: 34902511
One could write some vba to run through a list on the inventory sheet and find the first entry in the other sheets for each item. Does that sound useful? Btw Excel 2007 allows many more levels of nested formulae.
0
 
LVL 24

Accepted Solution

by:
StephenJR earned 1000 total points
ID: 34902651
Perhaps this custom function will help? So you can type, e.g =BegInv(A2,B2) in C2 of inventory sheet. Worked for your example file.
Function BegInv(vProd As Variant, vDesc As Variant) As Variant
  
Dim rFind As Range, ws As Worksheet, sAddr As String

With Sheets("Inventory")
    For Each ws In Worksheets
        If ws.Name <> "Inventory" Then
            Set rFind = ws.Columns(1).Find(What:=vProd, After:=ws.Range("A1"), _
                                           LookAt:=xlWhole, SearchDirection:=xlNext, _
                                           MatchCase:=False, SearchFormat:=False)
            If Not rFind Is Nothing Then
                sAddr = rFind.Address
                Do
                    If rFind.Offset(, 1) = vDesc Then
                        BegInv = rFind.Offset(, 2)
                        Exit For
                    Else
                        Set rFind = ws.Columns(1).Find(What:=vProd, After:=rFind)
                    End If
                Loop While rFind.Address <> sAddr
            End If
        End If
    Next ws
End With
     
End Function

Open in new window

0
 
LVL 24

Expert Comment

by:StephenJR
ID: 34902665
Slight refinement, change line 16 to
Exit Function

Open in new window

and add at line 25:
BegInv=""

Open in new window

0
Learn to develop an Android App

Want to increase your earning potential in 2018? Pad your resume with app building experience. Learn how with this hands-on course.

 
LVL 37

Assisted Solution

by:TommySzalapski
TommySzalapski earned 1000 total points
ID: 34902683
I recommend the making a summary of each month on the inventory sheet. Then you just need to find the first non-zero month. You can hide the month cells if you wish. The formula would look like this
=INDEX(C2:H2,MATCH(TRUE,C2:H2>0,0))
Note: It's an array formula so you need to hit ctrl+shift+enter when entering it.

Then I would do the following to speed it up and make it more robust
1: Use SUMPRODUCT to find the counts for each month instead of lookup(2/...) it's much much faster. It would look something like this
=SUMPRODUCT((January!$A$2:$A$300)=$A2)*(January!$B$2:$B$300)=$B2)*January!$C$2:$C$300)
2: To do all the months without having to retype the formula, just use INDIRECT and the column header
=SUMPRODUCT((INDIRECT(C$1&"!$A$2:$A$300)=$A2)*(INDIRECT(C$1&"!$B$2:$B$300)=$B2)*INDIRECT(C$1&"!$C$2:$C$300))
3: Wait, what if there are more than 300? Put a =counta(A:A) somewhere (like J1) and use it
=SUMPRODUCT((INDIRECT(C$1&"!$A$2:$A$"&$J$1)=$A2)*(INDIRECT(C$1&"!$B$2:$B$"&$J$1)=$B2)*INDIRECT(C$1&"!$C$2:$C$"&$J$1))

Hide any columns you would like

Posting example file.
Inventory-Q.xls
0
 
LVL 37

Expert Comment

by:TommySzalapski
ID: 34902690
Note that even though I added columns, my file is 30% smaller than yours. This may matter if the sheets get large. The computation will also be a lot faster and you can add months simply by dragging the formulas over.
0
 

Author Closing Comment

by:Massimo Scola
ID: 34987845
fantastic
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Freeze panes is an option within all variants of Excel to enable parts of a sheet to remain stationary when the cursor is in another part of the sheet. This is a very useful feature which is overlooked or under used.
Windows Explorer let you handle zip folders nearly as any other folder: Copy, move, change, and delete, etc. In VBA you can also handle normal files and folders, but zip folders takes a little more - and that you'll find here.
Many functions in Excel can make decisions. The most simple of these is the IF function: it returns a value depending on whether a condition you describe is true or false. Once you get the hang of using the IF function, you will find it easier to us…
How can you see what you are working on when you want to see it while you to save a copy? Add a "Save As" icon to the Quick Access Toolbar, or QAT. That way, when you save a copy of a query, form, report, or other object you are modifying, you…

593 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question