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[SparkR][Minor] Fix LDA doc #14853

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[SparkR][Minor] Fix LDA doc #14853

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e179576
Fix SparkDataFrame name. Add comments about an example data file.
junyangq Aug 28, 2016
0a47e94
Fix R style check.
junyangq Aug 28, 2016
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10 changes: 7 additions & 3 deletions R/pkg/R/mllib.R
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Original file line number Diff line number Diff line change
Expand Up @@ -994,18 +994,22 @@ setMethod("spark.survreg", signature(data = "SparkDataFrame", formula = "formula
#' @export
#' @examples
#' \dontrun{
#' text <- read.df("path/to/data", source = "libsvm")
#' # nolint start
#' # An example "path/to/file" can be
#' # paste0(Sys.getenv("SPARK_HOME"), "/data/mllib/sample_lda_libsvm_data.txt")
#' # nolint end
#' text <- read.df("path/to/file", source = "libsvm")
#' model <- spark.lda(data = text, optimizer = "em")
#'
#' # get a summary of the model
#' summary(model)
#'
#' # compute posterior probabilities
#' posterior <- spark.posterior(model, df)
#' posterior <- spark.posterior(model, text)
#' showDF(posterior)
#'
#' # compute perplexity
#' perplexity <- spark.perplexity(model, df)
#' perplexity <- spark.perplexity(model, text)
#'
#' # save and load the model
#' path <- "path/to/model"
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