ft_vector_slicer <- function (x, input.col = NULL, output.col = NULL, indices = c(1), ...) {
ml_backwards_compatibility_api()
class <- "org.apache.spark.ml.feature.VectorSlicer"
# indices need to be array !!!!!
if(is.vector(indices)){
indices <- as.array(unique(as.integer(indices - 1))) # sacla array start from 0 !!
}else{
message(paste("indices need to be a vector, but a", class(indices)))
indices <- array()
}
invoke_simple_transformer(x, class, list(setInputCol = ensure_scalar_character(input.col),
setOutputCol = ensure_scalar_character(output.col),
setIndices = indices))
}
environment(ft_vector_slicer) <- asNamespace('sparklyr')
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