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fix cv attr

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This commit is contained in:
hetong007 2015-01-25 14:16:46 -08:00
parent f75387f701
commit 5188bad873
1 changed files with 13 additions and 1 deletions
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14
R-package/R/slice.xgb.DMatrix.R
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@ -28,6 +28,18 @@ setMethod("slice", signature = "xgb.DMatrix",
if (class(object) != "xgb.DMatrix") {
stop("slice: first argument dtrain must be xgb.DMatrix")
}
ret <- .Call("XGDMatrixSliceDMatrix_R", object, idxset, PACKAGE = "xgboost")
ret <- .Call("XGDMatrixSliceDMatrix_R", object, idxset,
PACKAGE = "xgboost")
attr_list <- attributes(object)
nr <- xgb.numrow(object)
len <- sapply(attr_list,length)
ind <- which(len==nr)
if (length(ind)>0) {
nms <- names(attr_list)[ind]
for (i in 1:length(ind)) {
attr(ret,nms[i]) <- attr(object,nms[i])[idxset]
}
}
return(structure(ret, class = "xgb.DMatrix"))
})