n-gram pruning via tacl results can create empty results, causing errors

ajenhl / tacl

Tool for performing basic text analysis on the CBETA corpus

GNU General Public License v3.0

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n-gram pruning via tacl results can create empty results, causing errors #56

Closed ajenhl closed 7 years ago

ajenhl commented 7 years ago

The pruning methods of Results can remove all results, leading to exceptions on a subsequent call of prune_by_ngram_count (which temporarily adds a new column that is then referenced).