wehub-resource-sync
36 lines
902 B
R
36 lines
902 B
R
% Generated by roxygen2: do not edit by hand
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% Please edit documentation in R/lgb.Dataset.R
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\name{lgb.slice.Dataset}
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\alias{lgb.slice.Dataset}
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\title{Slice a dataset}
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\usage{
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lgb.slice.Dataset(dataset, idxset)
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}
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\arguments{
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\item{dataset}{Object of class \code{lgb.Dataset}}
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\item{idxset}{an integer vector of indices of rows needed}
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}
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\value{
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constructed sub dataset
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}
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\description{
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Get a new \code{lgb.Dataset} containing the specified rows of
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original \code{lgb.Dataset} object
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\emph{Renamed from} \code{slice()} \emph{in 4.4.0}
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}
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\examples{
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\donttest{
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\dontshow{setLGBMthreads(2L)}
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\dontshow{data.table::setDTthreads(1L)}
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data(agaricus.train, package = "lightgbm")
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train <- agaricus.train
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dtrain <- lgb.Dataset(train$data, label = train$label)
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dsub <- lgb.slice.Dataset(dtrain, seq_len(42L))
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lgb.Dataset.construct(dsub)
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labels <- lightgbm::get_field(dsub, "label")
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}
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}
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