slice

From xgboost v0.4-4 by Tong He

Get a new DMatrix containing the specified rows of orginal xgb.DMatrix object

Get a new DMatrix containing the specified rows of orginal xgb.DMatrix object

Usage

slice(object, ...)
"slice"(object, idxset, ...)

Arguments

object: Object of class "xgb.DMatrix"
...: other parameters
idxset: a integer vector of indices of rows needed

Examples

data(agaricus.train, package='xgboost')
train <- agaricus.train
dtrain <- xgb.DMatrix(train$data, label=train$label)
dsub <- slice(dtrain, 1:3)

Documentation reproduced from package xgboost, version 0.4-4, License: Apache License (== 2.0) | file LICENSE

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