tm_reduce
From tm v0.6-2
by Ingo Feinerer
Combine Transformations
Fold multiple transformations (mappings) into a single one.
Usage
tm_reduce(x, tmFuns, ...)Arguments
- x
- A corpus.
- tmFuns
- A list of tm transformations.
- ...
- Arguments to the individual transformations.
Value
-
A single tm transformation function obtained by folding
tmFuns
from right to left (via Reduce(..., right = TRUE)).
See Also
Reduce for R's internal folding/accumulation mechanism, and
getTransformations to list available transformation
(mapping) functions.
Examples
data(crude)
crude[[1]]
skipWords <- function(x) removeWords(x, c("it", "the"))
funs <- list(stripWhitespace,
skipWords,
removePunctuation,
content_transformer(tolower))
tm_map(crude, FUN = tm_reduce, tmFuns = funs)[[1]]
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