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quadrama / DramaAnalysis

An R package for analysis of dramatic texts
GNU General Public License v3.0
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Data.table warning #150

Open nilsreiter opened 5 years ago

nilsreiter commented 5 years ago 
text <- loadDrama("11f9k.0")
utteranceStatistics(text)

leads to this warning:

Warning message:
In `[.data.table`(text, , `:=`(dl, .N), .(corpus, drama)) :
  Invalid .internal.selfref detected and fixed by taking a (shallow) copy of the data.table so that := can add this new column by reference. At an earlier point, this data.table has been copied by R (or was created manually using structure() or similar). Avoid names<- and attr<- which in R currently (and oddly) may copy the whole data.table. Use set* syntax instead to avoid copying: ?set, ?setnames and ?setattr. If this message doesn't help, please report your use case to the data.table issue tracker so the root cause can be fixed or this message improved.