xgboost: dim.xgb.DMatrix – R documentation

Pricing

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

Get Started for Free

Documentation

xgboost

dim.xgb.DMatrix

Dimensions of xgb.DMatrix

Description

Returns a vector of numbers of rows and of columns in an xgb.DMatrix.

Usage

## S3 method for class 'xgb.DMatrix'
dim(x)

Arguments

`x`	Object of class `xgb.DMatrix`

Details

Note: since nrow and ncol internally use dim, they can also be directly used with an xgb.DMatrix object.

Examples

data(agaricus.train, package='xgboost')
train <- agaricus.train
dtrain <- xgb.DMatrix(train$data, label=train$label)

stopifnot(nrow(dtrain) == nrow(train$data))
stopifnot(ncol(dtrain) == ncol(train$data))
stopifnot(all(dim(dtrain) == dim(train$data)))

xgboost

Extreme Gradient Boosting

v1.4.1.1

Apache License (== 2.0) | file LICENSE

Authors

Tianqi Chen [aut], Tong He [aut, cre], Michael Benesty [aut], Vadim Khotilovich [aut], Yuan Tang [aut] (<https://orcid.org/0000-0001-5243-233X>), Hyunsu Cho [aut], Kailong Chen [aut], Rory Mitchell [aut], Ignacio Cano [aut], Tianyi Zhou [aut], Mu Li [aut], Junyuan Xie [aut], Min Lin [aut], Yifeng Geng [aut], Yutian Li [aut], XGBoost contributors [cph] (base XGBoost implementation)

Initial release

2021-04-22

dim.xgb.DMatrix

Description

Usage

Arguments

Details

Examples

xgboost

We don't support your browser anymore