a375ad2822
* [R] make sure things work for a single split model; fixes #2191 * [R] add option use_int_id to xgb.model.dt.tree * [R] add example of exporting tree plot to a file * [R] set save_period = NULL as default in xgboost() to be the same as in xgb.train; fixes #2182 * [R] it's a good practice after CRAN releases to bump up package version in dev * [R] allow xgb.DMatrix construction from integer dense matrices * [R] xgb.DMatrix: silent parameter; improve documentation * [R] xgb.model.dt.tree code style changes * [R] update NEWS with parameter changes * [R] code safety & style; handle non-strict matrix and inherited classes of input and model; fixes #2242 * [R] change to x.y.z.p R-package versioning scheme and set version to 0.6.4.3 * [R] add an R package versioning section to the contributors guide * [R] R-package/README.md: clean up the redundant old installation instructions, link the contributors guide
24 lines
731 B
R
24 lines
731 B
R
#' Save xgb.DMatrix object to binary file
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#'
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#' Save xgb.DMatrix object to binary file
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#'
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#' @param dmatrix the \code{xgb.DMatrix} object
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#' @param fname the name of the file to write.
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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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#' xgb.DMatrix.save(dtrain, 'xgb.DMatrix.data')
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#' dtrain <- xgb.DMatrix('xgb.DMatrix.data')
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#' @export
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xgb.DMatrix.save <- function(dmatrix, fname) {
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if (typeof(fname) != "character")
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stop("fname must be character")
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if (!inherits(dmatrix, "xgb.DMatrix"))
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stop("dmatrix must be xgb.DMatrix")
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.Call("XGDMatrixSaveBinary_R", dmatrix, fname[1], 0L, PACKAGE = "xgboost")
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return(TRUE)
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}
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