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- From: userDHAL@mts.ucs.UAlberta.CA (David Halliwell)
- Newsgroups: comp.apps.spreadsheets
- Subject: Re: Protecting end-points of a named range
- Message-ID: <dhalliwe.714352541@muskwa.ucs.ualberta.ca>
- Date: 20 Aug 92 23:15:41 GMT
- References: <RON.92Aug19115827@bert.cs.byu.edu> <thompson.714341484@kiyotaki.econ.umn.edu>
- Sender: news@kakwa.ucs.ualberta.ca
- Distribution: comp.apps.spreadsheets
- Organization: University Of Alberta, Edmonton Canada
- Lines: 55
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-
- thompson@atlas.socsci.umn.edu (T. Scott Thompson) writes:
-
- >I only use Quattro for my own work, so my "dummy-proofing" is of a very
- >personal variety! However, the following has worked well for me:
-
- >To protect the top and bottom of a COLUMN range, I simply add a cell
- >to the top and bottom, include those cells in the range, and
- >(optionally) insert something in them that the numeric functions will
- >ignore (like a label).
-
- Unfortunately, a rather large number of numerical functions do not
- ignore labels: they treat them as if they are a valid number with a value
- of zero. IMHO this is a major disadvantage of spreadsheets for any serious
- numerical work. I would think that the only safe option in your solution
- would be the completely blank cell. Is there another trick that you can
- use to prevent this problem?
-
- > Then I protect just the two "guard cells". I
- >end up with something like this:
-
-
- > 1 2 3
- > A -------
- > B 1.2
- > C 3.4
- > D 5.6
- > E -------
- > F 10.2
-
- >Here I would make A2-E2 be the named range. (Say "DATA") I put the
- >labels "/-" in A2 and in E2, which are protected. B2-D2 are not
- >protected, so that they can be erased, deleted, etc. Cell F2 might
- >have something like @SUM(DATA), which simply ignores the labels in A2
- >and E2.
-
- Yes, the @SUM would give the correct total, but @AVG or @COUNT will
- think that 5 values are present.
-
- >This scheme also makes it easy to add an extra cell to the top or
- >bottom of the range and have it be included in the range
- >automatically.
-
- >The same scheme should also work for ROW ranges. If you do this then
- >you can evey use "Hide Column" to prevent the columns corresponding to
- >A2 and E2 in the example from showing up.
-
- This would also make it very easy to leave the cell completely blank,
- so all functions will work in the expected way.
-
-
-
- Dave Halliwell
- Department of Geography
- University of Alberta
- Edmonton, Alberta
-