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FACTOR: prevent crash if the dataset is empty. 20100731040501/pspp
authorJohn Darrington <john@darrington.wattle.id.au>
Sat, 31 Jul 2010 09:55:18 +0000 (11:55 +0200)
committerJohn Darrington <john@darrington.wattle.id.au>
Sat, 31 Jul 2010 09:55:18 +0000 (11:55 +0200)
The FACTOR command crashed if there were no cases
which had non-missing values for all variables.
This change emits a warning in this case and does
no analysis.


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