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QUESTION: Dear Aidan,

I have a data set in the form:

1

2

3

4

-1

-1

-1

3

6

7

-1

-1

-1

-1

I need to generate labels in another columns where the value of a designated column is not -1. Please note each sequence of values between the -1s represent a cluster, and the number of values in each cluster and the number of -1 separators varies.

I need something like:

C01 1

C01 2

C01 3

C01 4

-1

-1

-1

C02 3

C02 6

C02 7

-1

-1

-1

-1

Thanks,

Benny

ANSWER: I'm not clear what you wanted me to do with the -1 values - the macro itself seems relatively simple

whilst the value of the cell is not -1, put the data in increasing columns

at -1, reset the column to the (first?) one

continue until no more data remains

BUT as I say, knowing how you want the output makes a difference (slightly) to the best method of programming it - if it helps, my direct email is aidan.heritage@virgin.net

[an error occurred while processing this directive]---------- FOLLOW-UP ----------

QUESTION: I wrote -1 because that was the way I originally received the data. that -1 value can be replaced by any character as a separator(e.g. x). Main question here is labeling; with members of each cluster having the same label (in an adjacent column), and leave the separators cells in the this new column empty.

unlabeled data

Col

1

2

3

x

x

x

1

2

3

data after labeling

Col 1 Col2

C01 1

C01 2

C01 3

EMPTY x

EMPTY x

EMPTY x

C02 1

C02 2

C02 3

C01= cluster 1, C02= cluster 2

Might use a loop to add 1 to the labels of the next cluster which start after an empty block.

Thanks again,

Benny

I think I've followed the requirements - this macro keeps the original data in column 1 and labels column 2 - that't the opposite way round to your explanation but it would be easy enough to insert a column first and then amend the logic here

Sub labeler()

Dim n As Long, OutVar As Long, endvar As Long

endvar = Cells.SpecialCells(xlCellTypeLastCell).Row

n = 2

OutVar = 1

While n <= endvar

While Cells(n, 1).Value <> "x" And n <= endvar

Cells(n, 2).Value = "GROUP " & OutVar

n = n + 1

Wend

While Cells(n, 1).Value = "x"

n = n + 1

Wend

OutVar = OutVar + 1

Wend

End Sub

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Comment | Excellent. Thanks. |

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