Package: dblr 0.1.0
Check: examples, Result: ERROR
  Running examples in ‘dblr-Ex.R’ failed
  The error most likely occurred in:
  
  > base::assign(".ptime", proc.time(), pos = "CheckExEnv")
  > ### Name: dblr_train
  > ### Title: Discrete Boosting Logistic Regression Training
  > ### Aliases: dblr_train
  > 
  > ### ** Examples
  > 
  > # use iris data for example
  > dat <- iris
  > # create two categorical variables
  > dat$Petal.Width <- as.factor((iris$Petal.Width<=0.2)*1+(iris$Petal.Width>1.0)*2)
  > dat$Sepal.Length <- (iris$Sepal.Length<=3.0)*2+(iris$Sepal.Length>6.0)*1.25
  > # create the response variable
  > dat$Species <- as.numeric(dat$Species=='versicolor')
  > set.seed(123)
  > # random sampling
  > index <- sample(1:150,100,replace = FALSE)
  > # train the dblr model using the training data
  > dblr_fit <- dblr_train(train_x=dat[index,c(1:4)],
  + train_y=dat[index,5],category_cols = c('Petal.Width','Sepal.Length'),
  + metric = 'logloss',subsample = 0.5,eta = 0.05,colsample = 1.0,
  + lambda = 1.0,cv_early_stops = 10,verbose=FALSE)
  Warning in throw_err_or_depr_msg("Passed unrecognized parameters: ", paste(head(names_unrecognized),  :
    Passed unrecognized parameters: metrics. This warning will become an error in a future version.
  Error in begin_iteration:end_iteration : argument of length 0
  Calls: dblr_train -> <Anonymous>
  Execution halted
