dimnames.xgb.DMatrix
From xgboost v0.6-3
by Tong He
Handling of column names of xgb.DMatrix
Only column names are supported for xgb.DMatrix
, thus setting of
row names would have no effect and returnten row names would be NULL.
Usage
"dimnames"(x)
"dimnames"(x) <- value
Arguments
- x
- object of class
xgb.DMatrix
- value
- a list of two elements: the first one is ignored and the second one is column names
Details
Generic dimnames
methods are used by colnames
.
Since row names are irrelevant, it is recommended to use colnames
directly.
Examples
data(agaricus.train, package='xgboost')
train <- agaricus.train
dtrain <- xgb.DMatrix(train$data, label=train$label)
dimnames(dtrain)
colnames(dtrain)
colnames(dtrain) <- make.names(1:ncol(train$data))
print(dtrain, verbose=TRUE)
Community examples
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