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
36 lines
1.0 KiB
R
36 lines
1.0 KiB
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{dimnames.xgb.DMatrix}
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\alias{dimnames.xgb.DMatrix}
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\alias{dimnames<-.xgb.DMatrix}
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\title{Handling of column names of \code{xgb.DMatrix}}
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\usage{
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\method{dimnames}{xgb.DMatrix}(x)
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\method{dimnames}{xgb.DMatrix}(x) <- value
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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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\item{value}{a list of two elements: the first one is ignored
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and the second one is column names}
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}
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\description{
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Only column names are supported for \code{xgb.DMatrix}, thus setting of
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row names would have no effect and returnten row names would be NULL.
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}
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\details{
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Generic \code{dimnames} methods are used by \code{colnames}.
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Since row names are irrelevant, it is recommended to use \code{colnames} directly.
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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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dimnames(dtrain)
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colnames(dtrain)
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colnames(dtrain) <- make.names(1:ncol(train$data))
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print(dtrain, verbose=TRUE)
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}
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