Last data update: 2014.03.03
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R: rbind for ffdf where missing columns are added if not...
ffdfrbind.fill | R Documentation |
rbind for ffdf where missing columns are added if not available in one of the ffdf objects
Description
rbind for ffdf where missing columns are added if not available in one of the ffdf objects.
Similarly as rbind.fill but for ffdf objects
Usage
ffdfrbind.fill(..., clone = TRUE)
Arguments
... |
2 or more ffdf objects
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clone |
logical, indicating to clone the first ffdf object in ... or not before appending
the other objects. Defaults to TRUE.
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Value
an ffdf where the ffdf objects are rbind-ed together. Missing columns in either one of the passed
ffdf objects are set to NA values.
Examples
x <- ffdfrbind.fill( as.ffdf(iris),
as.ffdf(iris[, c("Sepal.Length", "Sepal.Width"
, "Petal.Length")]))
class(x)
nrow(x)
sum(is.na(x$Petal.Width))
Results
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