improvement for reducing warnings

R-package/DESCRIPTION

@@ -18,7 +18,7 @@ License: Apache License (== 2.0) | file LICENSE
 URL: https://github.com/tqchen/xgboost
 BugReports: https://github.com/tqchen/xgboost/issues
 Depends:
-    R (>= 2.0.2)
+    R (>= 2.10)
 Imports:
     Matrix (>= 1.1-0),
     methods

R-package/R/xgboost.R

@@ -33,9 +33,14 @@
 #' Number of threads can also be manually specified via "nthread" parameter
 #' 
 #' @examples
-#' data(iris)
-#' bst <- xgboost(as.matrix(iris[,1:4]),as.numeric(iris[,5]=='setosa'), nrounds = 2)
-#' pred <- predict(bst, as.matrix(iris[,1:4]))
+#' data(agaricus.train, package='xgboost')
+#' data(agaricus.test, package='xgboost')
+#' train <- agaricus.train
+#' test <- agaricus.test
+#' bst <- xgboost(data = train$data, label = train$label, max.depth = 2, 
+#'                eta = 1, nround = 2,objective = "binary:logistic")
+#' pred <- predict(bst, test$data)
+#' 
 #' @export
 #' 
 xgboost <- function(data = NULL, label = NULL, params = list(), nrounds, 

R-package/data/README.md

@@ -1,2 +0,0 @@
-This folder contains processed example dataset used by the demos.
-Copyright of the dataset belongs to the original copyright holder