Re: [libreoffice-users] Calc: moving/sorting rows on Sheet1 don't update formulas on Sheet2 that refer to them

Hi,

There are two ways to fix your problem:

1) Insert cells to place the new entries at the top, above cells A2-B2
, which will move down the reference of the last cell automatically.
The new cells must be in the range of the search array (if you insert
above A1, the search array reference will be completely moved down and
you will not get the expected effect). Then sort.
2) Use the OFFSET function along with the COUNTIF function, something
like this:

=VLOOKUP(B2,OFFSET(Food.$A$1,0,0,COUNTIF(Food.$A:$A,"<>"""""),2),2,0)

What this does:

COUNTIF(Food.$A:$A,"<>""""") counts the number of non-empty cells in
the first column of the Food sheet. This evaluation uses the full
height of the worksheet
OFFSET(Food.$A$1,0,0,COUNTIF(Food.$A:$A,"<>"""""),2) creates the
reference similar to Food.$A$1:$B$50, but the height is the number of
non-empty cells given by countif, with a fixed with of 2, anchored at
cell Food.$a$1. This is done dynamically, as you add entries in your
Food columns.

To use this, simply place the entries at the end of the existing list,
and sort.

Then VLOOKUP then just does the search. Also, since you are using 0 as
last argument to VLOOKUP, your list does not need to be sorted since
VLOOKUP will look for an exact match wherever the match will be in the
search array.

And you can also simplify your formula like this:

=IFERROR(VLOOKUP(B2,OFFSET(Food.$A$1,0,0,COUNTIF(Food.$A:$A,"<>"""""),2
),2,0),"?")

IFERROR will present the result of the first argument or if there is
any error, the second argument, which can also be any other set of
functions.

I hope this helps.

Rémy.


Le mercredi 10 avril 2019 à 09:58 +0200, Luuk a écrit :
> On 10-4-2019 05:32, Tim Deaton wrote:
>
> Steve & Brian, thanks for your replies.
>
> Despite decades of working on spreadsheets, I can't say I expected 
> it.  But then, it's the first time I'd found myself in this particular 
> scenario.  But after your first sentence, I think I can see the logic 
> - even though I wish the spreadsheet was smarter.
>
> I actually am doing a lookup from Sheet2.  But the food names on 
> Sheet1 is the index column, and I'm using the lookup function to pull 
> the calories, carbs, etc into Sheet2.  That's why I was sorting Sheet1 
> on the food names - both to make it easier for VLOOKUP to find a 
> match, and to make it easier for me to create the link between the two 
> sheets.
>
> Unless someone has any other suggestions, I guess I'll have to 
> remember to insert new rows wherever my noew foods need to be, and/or 
> to use ALT+SHIFT to drag new rows to where I should have inserted them 
> before I created them.  I'll probably also need to regularly use 
>
> Paste Special| to convert those formulas pulling the food names into 
> Sheet2 into hard text, since this is more fragile than I expected it 
> to be.
>
> Perhaps there's a way to setup a pull-down pick-list to pull the food 
> names into Sheet2?  Perhaps I can investigate that later.
>
> -- Tim
>
> You should not be doing a lookup from sheet2, but you should do it from 
> sheet 1
>
> Simple Example:
>
> Sheet1:
>
> Three columns
>
> A Date; i.e. 10-04-2019   ('DD-MM-YYYY', or whatever dateformat you are 
> using)
>
> B Food; ie. 'pasta', 'pizza'
>
> C Carbohydrates; formula: 
> =IF(ISERR(VLOOKUP(B2;Food.$A$1:$B$50;2;0));"?"; 
> VLOOKUP(B2;Food.$A$1:$B$50;2;0))
>
>
> Sheet2:
>
> Two columns
>
> A Food; i.e. 'pasta','pizza','macaroni', etc....
>
> B Carbohydrates;  the carbohydrates in the food...
>
>
> After this sorting sheet1, or sheet2 is no problem.
>
> The only 'problem' i have with spreadsheets is that i am always 
> referring to fixed ranges (like the $A$1:$B$50), which fail after adding 
> more than 50 lines.... ;)
>
>
>
>
>
>
>
> 40

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