Avoid some Cran check error messages

R-package/R/xgb.cv.R

@@ -130,3 +130,8 @@ xgb.cv <- function(params=list(), data, nrounds, nfold, label = NULL, missing =
   }
   return(dt)
 }
+
+# Avoid error messages during CRAN check.
+# The reason is that these variables are never declared
+# They are mainly column names inferred by Data.table...
+globalVariables(".")

R-package/R/xgb.dump.R

@@ -55,3 +55,8 @@ xgb.dump <- function(model = NULL, fname = NULL, fmap = "", with.stats=FALSE) {
     return(TRUE)
   }
 }
+
+# Avoid error messages during CRAN check.
+# The reason is that these variables are never declared
+# They are mainly column names inferred by Data.table...
+globalVariables(".")

R-package/R/xgb.importance.R

@@ -80,4 +80,6 @@ treeDump <- function(feature_names, text){
 
 linearDump <- function(feature_names, text){
   which(text == "weight:") %>% {a=.+1;text[a:length(text)]} %>% as.numeric %>% data.table(Feature = feature_names, Weight = .)
-}
+}
+
+globalVariables(".")

R-package/R/xgb.model.dt.tree.R

@@ -162,3 +162,8 @@ xgb.model.dt.tree <- function(feature_names = NULL, filename_dump = NULL, model
       
   allTrees
 }
+
+# Avoid error messages during CRAN check.
+# The reason is that these variables are never declared
+# They are mainly column names inferred by Data.table...
+globalVariables("ID", "Tree", "Yes", ".", "Feature", "Cover", "Quality", "No", "Gain", "Frequence")

R-package/R/xgb.plot.tree.R

@@ -87,3 +87,5 @@ xgb.plot.tree <- function(feature_names = NULL, filename_dump = NULL, model = NU
   path <- allTrees[Feature!="Leaf", c(yesPath, noPath)] %>% .[order(.)] %>% paste(sep = "", collapse = ";") %>% paste("graph LR", .,collapse = "", sep = ";") %>% paste(CSSstyle, yes, no, sep = ";")
   DiagrammeR(path, width, height)
 }
+
+globalVariables("Feature", "yesPath", "ID", "Cover", "Quality", "Split", "Yes", "Yes.Feature", "noPath", "No", "No.Feature", ".")