documentation

R-package/man/nrow-xgb.DMatrix-method.Rd

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+% Generated by roxygen2 (4.1.0): do not edit by hand
+% Please edit documentation in R/nrow.xgb.DMatrix.R
+\docType{methods}
+\name{nrow,xgb.DMatrix-method}
+\alias{nrow,xgb.DMatrix-method}
+\title{Number of xgb.DMatrix rows}
+\usage{
+\S4method{nrow}{xgb.DMatrix}(x)
+}
+\arguments{
+\item{x}{Object of class \code{xgb.DMatrix}}
+}
+\description{
+\code{nrow} return the number of rows present in the \code{xgb.DMatrix}.
+}
+\examples{
+data(agaricus.train, package='xgboost')
+train <- agaricus.train
+dtrain <- xgb.DMatrix(train$data, label=train$label)
+stopifnot(nrow(dtrain) == nrow(train$data))
+}
+