R: Dimensions of an 'lgb.Dataset'

dim.lgb.Dataset {lightgbm} | R Documentation

## Dimensions of an `lgb.Dataset`

### Description

Returns a vector of numbers of rows and of columns in an `lgb.Dataset`.

### Usage

    ## S3 method for class 'lgb.Dataset'
    dim(x, ...)

### Arguments

`x` | Object of class `lgb.Dataset`
`...` | other parameters

### Details

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

### Value

a vector of numbers of rows and of columns

### Examples

    library(lightgbm)
    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)))

[Package lightgbm version 2.3.1 Index]