b4d97d3cb8
* [R] better argument check in xgb.DMatrix; fixes #1480 * [R] showsd was a dummy; fixes #2044 * [R] better categorical encoding explanation in vignette; fixes #1989 * [R] new roxygen version docs update
29 lines
777 B
R
29 lines
777 B
R
% Generated by roxygen2: do not edit by hand
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% Please edit documentation in R/xgb.DMatrix.R
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\name{dim.xgb.DMatrix}
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\alias{dim.xgb.DMatrix}
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\title{Dimensions of xgb.DMatrix}
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\usage{
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\method{dim}{xgb.DMatrix}(x)
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}
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\arguments{
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\item{x}{Object of class \code{xgb.DMatrix}}
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}
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\description{
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Returns a vector of numbers of rows and of columns in an \code{xgb.DMatrix}.
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}
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\details{
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Note: since \code{nrow} and \code{ncol} internally use \code{dim}, they can also
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be directly used with an \code{xgb.DMatrix} object.
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}
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\examples{
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data(agaricus.train, package='xgboost')
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train <- agaricus.train
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dtrain <- xgb.DMatrix(train$data, label=train$label)
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stopifnot(nrow(dtrain) == nrow(train$data))
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stopifnot(ncol(dtrain) == ncol(train$data))
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stopifnot(all(dim(dtrain) == dim(train$data)))
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}
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