Returns a vector of numbers of rows and of columns in an lgb.Dataset
.
# S3 method for lgb.Dataset dim(x)
x | Object of class |
---|
a vector of numbers of rows and of columns
Note: since nrow
and ncol
internally use dim
, they can also
be directly used with an lgb.Dataset
object.
# \donttest{ setLGBMthreads(2L) data.table::setDTthreads(1L) data(agaricus.train, package = "lightgbm") train <- agaricus.train dtrain <- lgb.Dataset(train$data, label = train$label) stopifnot(nrow(dtrain) == nrow(train$data)) stopifnot(ncol(dtrain) == ncol(train$data)) stopifnot(all(dim(dtrain) == dim(train$data))) # }