Hello,

I just typed this in and the message didn't take - I hope this is not
duplicated.

I have inherited a spreadsheet with 3 month rolling totals. Is there a way
to automate this?

Sample:
Widget(A1) Jan(B1) Feb(C1) Mar(D1) TOTAL(E1)
Where TOTAL = sum(b1:d1)

Next month, we add Apr(E1) moves TOTAL to (F1) and doesn't compute Jan(B1)
Where TOTAL = sum(c1:e1)

There are many rows with this type of data and so I would rather not
copy/paste/reformat the formula.

Thanks in advance!

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Try something like this
A B C D E
1 Jan Feb Mar Apr Tot
2 1 2 3 4 9

The formula for E2 is =SUM(OFFSET(E2,0,-3,1,3))

This defines a range 1 row and three columns wide that always starts 3
columns to the left of the cell with the formula, so when you add a column
(like May) the total formula still references the correct 3 cells.
--
If this helps, please remember to click yes.


"DTTODGG" wrote:

> Hello,
>
> I just typed this in and the message didn't take - I hope this is not
> duplicated.
>
> I have inherited a spreadsheet with 3 month rolling totals. Is there a way
> to automate this?
>
> Sample:
> Widget(A1) Jan(B1) Feb(C1) Mar(D1) TOTAL(E1)
> Where TOTAL = sum(b1:d1)
>
> Next month, we add Apr(E1) moves TOTAL to (F1) and doesn't compute Jan(B1)
> Where TOTAL = sum(c1:e1)
>
> There are many rows with this type of data and so I would rather not
> copy/paste/reformat the formula.
>
> Thanks in advance!
>
> ----------------
> This post is a suggestion for Microsoft, and Microsoft responds to the
> suggestions with the most votes. To vote for this suggestion, click the "I
> Agree" button in the message pane. If you do not see the button, follow this
> link to open the suggestion in the Microsoft Web-based Newsreader and then
> click "I Agree" in the message pane.
>
> http://www.microsoft.com/office/comm...el.programming

Thank you Paul ... simple and beautiful!

"Paul C" wrote:

> Try something like this
> A B C D E
> 1 Jan Feb Mar Apr Tot
> 2 1 2 3 4 9
>
> The formula for E2 is =SUM(OFFSET(E2,0,-3,1,3))
>
> This defines a range 1 row and three columns wide that always starts 3
> columns to the left of the cell with the formula, so when you add a column
> (like May) the total formula still references the correct 3 cells.
> --
> If this helps, please remember to click yes.
>
>
> "DTTODGG" wrote:
>
> > Hello,
> >
> > I just typed this in and the message didn't take - I hope this is not
> > duplicated.
> >
> > I have inherited a spreadsheet with 3 month rolling totals. Is there a way
> > to automate this?
> >
> > Sample:
> > Widget(A1) Jan(B1) Feb(C1) Mar(D1) TOTAL(E1)
> > Where TOTAL = sum(b1:d1)
> >
> > Next month, we add Apr(E1) moves TOTAL to (F1) and doesn't compute Jan(B1)
> > Where TOTAL = sum(c1:e1)
> >
> > There are many rows with this type of data and so I would rather not
> > copy/paste/reformat the formula.
> >
> > Thanks in advance!
> >
> > ----------------
> > This post is a suggestion for Microsoft, and Microsoft responds to the
> > suggestions with the most votes. To vote for this suggestion, click the "I
> > Agree" button in the message pane. If you do not see the button, follow this
> > link to open the suggestion in the Microsoft Web-based Newsreader and then
> > click "I Agree" in the message pane.
> >
> > http://www.microsoft.com/office/comm...el.programming