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#### 6.1.39 `uniq`

Usage:

       uniq [-count] [<colid-list>]

Eliminates adjacent rows which have the same values. If used with no arguments, then any row which has identical values to its predecessor is removed.

If the `<colid-list>` parameter is given then only the values in the specified columns must be equal in order for the row to be removed.

If the `-count` flag is given, then an additional column with the name DupCount will be prepended to the table giving a count of the number of duplicated input rows represented by each output row. A unique row has a DupCount value of 1.

Syntax for the `<colid-list>` argument is described in Section 6.3.

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STILTS - Starlink Tables Infrastructure Library Tool Set
Starlink User Note256
STILTS web page: http://www.starlink.ac.uk/stilts/
Author email: m.b.taylor@bristol.ac.uk
Mailing list: topcat-user@jiscmail.ac.uk