Excel Tip of the Week #314 - ADDRESS and INDIRECT redux

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Hello all and welcome back to the Excel Tip of the Week!  This week, we have a Developer level post in which we're taking a fresh look at the reference-building functions ADDRESS and INDIRECT.  These were last covered back in TOTW #132.

What is ADDRESS all about?

Firstly, let's take ADDRESS.  This is a function that creates a text output that resembles a cell reference.  So if for example you want to generate a reference to cell B4 on a sheet that you specify, you might do this:

The syntax breaks down like this:

=ADDRESS(row number, column number, absolute option, referencing style, sheet name)

Row number is exactly that - which number row you want.  Of course this could be a formula of its own; however in our example this is just a 4 for row 4.
Column number is slightly trickier - although we're used to using letters to denote columns, this must be a number - in our example, a 2 for column B.
Absolute option and referencing style are provided if you care about absolute referencing (B4 vs $B$4) or if you want to use the R1C1 reference style (see TOTW #137).  However, these are both unlikely to be necessary and usually I would just skip them.
Sheet name is our final input - specifying the sheet name we want to use.  If blank, you'll just get a reference to the current sheet.  Here we're using a cell reference to pick up the sheet named in the dropdown menu in cell C5.

You can also make ranges using this method, by using an & to join together two ADDRESS formulas with a colon:

We specify a sheet for the first ADDRESS only.

Adding in INDIRECT

Now, the above formulas only create text that looks like a reference.  Excel still treats the result as text and doesn't actually involve the cell named.

What INDIRECT does is take a text input and ask Excel to look at it as though it were a cell reference - i.e. to try and actually go find the cell in question.  Here's our first example converted in to an INDIRECT that actually retrieves the value of cell B4 on the stated sheet:

If we want to use the range-style option we introduced above, of course we will need to feed the resulting range into some kind of summary function:

INDIRECT is essential for using ADDRESS - it lets you do things like pulling up a number from a sheet relating to a specific person, using that person's name to steer the ADDRESS to the desired sheet.  But you don't actually need ADDRESS to use INDIRECT - it can work with anything that Excel could interpret as a reference.

For example, if you have a named range, then INDIRECT can be used to get Excel to recognise that range in places it doesn't normally expect it.  For example, let's say we want to use a dropdown to choose which of three named ranges will be summed up:

We can also use this when working with dropdowns (and see TOTW #296 for more on those) - so for example, we can set which dropdown appears in one cell based on what has been chosen in a previous cell:

And finally, you can use INDIRECT to dynamically refer to cells within an Excel table by column name, by building up a structured reference (see TOTW #164):

You can see all these examples in the file attached at the bottom of this post.

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ADDRESS and INDIRECT redux.xlsx
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