SJ: no visible binding for global variable ‘bs’
SJ: no visible global function definition for ‘get.adjacency’
SJ : <anonymous>: no visible global function definition for
  ‘graph.adjacency’
SJ: no visible binding for global variable ‘ecount’
SJ.dag: no visible binding for global variable ‘bs’
SJ.dag : <anonymous>: no visible global function definition for
  ‘graph.adjacency’
SJ.dag: no visible binding for global variable ‘ecount’
SJpath: no visible global function definition for ‘get.adjacency’
SJpath : <anonymous>: no visible global function definition for
  ‘graph.adjacency’
generate.dag.data: no visible global function definition for ‘vcount’
generate.dag.data: no visible global function definition for
  ‘topological.sort’
generate.dag.data: no visible global function definition for
  ‘neighbors’
generate.dag.data: no visible global function definition for ‘rnorm’
generate.dag.data: no visible global function definition for ‘runif’
grpsel: no visible global function definition for ‘Matrix’
moralize: no visible global function definition for ‘vcount’
moralize: no visible global function definition for ‘as.undirected’
moralize: no visible global function definition for ‘get.adjacency’
moralize: no visible global function definition for ‘add.edges’
moralize: no visible global function definition for ‘combn’
moralize: no visible global function definition for ‘simplify’
plot.SJ: no visible global function definition for
  ‘layout.fruchterman.reingold’
plot.SJ: no visible global function definition for ‘plot’
plot.SJ.dag: no visible global function definition for
  ‘layout.fruchterman.reingold’
plot.SJ.dag: no visible global function definition for ‘plot’
print.SJ: no visible binding for global variable ‘ecount’
print.SJ: no visible global function definition for ‘ecount’
print.SJ.dag: no visible binding for global variable ‘ecount’
print.SJ.dag: no visible global function definition for ‘ecount’
rdag: no visible global function definition for ‘graph.adjacency’
Undefined global functions or variables:
  Matrix add.edges as.undirected bs combn ecount get.adjacency
  graph.adjacency layout.fruchterman.reingold neighbors plot rnorm
  runif simplify topological.sort vcount
Consider adding
  importFrom("graphics", "plot")
  importFrom("stats", "rnorm", "runif")
  importFrom("utils", "combn")
to your NAMESPACE file.