Formula VSTACK/HSTACK with blank array

I have a formula =VSTACK(a,b,c,d), while length of each array is not fixed. Now, sometimes, let's say d is blank, or N/A. I want the result to be the stack of a+b+c. One solution is to use a IFERRO...

excel

Formulas and Functions

office 365

SergeiBaklan

Dec 02, 2024

As variant

=LET(
     FilterRange, LAMBDA(rng,id,name,
       IFERROR( FILTER(rng, CHOOSECOLS(rng, id) = name ), "⚽" ) ),
     Combined,  VSTACK(
       FilterRange( A1:B1000, 1, "Bird" ),
       FilterRange( D1:E1000, 1, "Dog"  )
     ),
     FILTER(
       Combined,
       NOT( ISNA( CHOOSECOLS(Combined, 2 ) ) ) )
)

VSTACK.xlsx13 KB

qazzzlyt

Copper Contributor

Dec 02, 2024

Thank you all. See attached sample.

I want to take Birds from Zoo A and Dogs from Zoo B.

However, there is no Dog in Zoo B.

Solution A does not work. One #CALC! will stop entire VSTACK()

In solution B, I have to Filter() in separate cells first, then VSTACK() them.

It seems there is no elegant way if I have more Zoos.

VSTACK.xlsx12 KB

Detlef_Lewin

Silver Contributor

Dec 04, 2024

Another variant.

=LET(
a,VSTACK(
   EXPAND(FILTER(A2:B10,A2:A10="Bird",""),,2,""),
   EXPAND(FILTER(D2:E10,D2:D10="Dog",""),,2,"")
   ),
b,-SUM(--(a=""))/2,
c,DROP(a,b),
c)

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Formula VSTACK/HSTACK with blank array

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