d: no visible global function definition for 'new'
r: no visible global function definition for 'new'
u: no visible global function definition for 'new'
v: no visible global function definition for 'new'
*,vertexSet-vertexSet: no visible global function definition for 'new'
+,generalGraph-edge: no visible global function definition for 'is'
+,multiGraph-edge: no visible global function definition for 'is'
+,simpleGraph-directedEdge: no visible global function definition for
  'new'
+,simpleGraph-undirectedEdge: no visible global function definition for
  'new'
+,vertexSet-vertexSet: no visible global function definition for 'new'
-,edgeList-edge: no visible global function definition for 'as'
-,vertexSet-vertexSet: no visible global function definition for 'new'
[,adjacencyList: no visible global function definition for 'new'
[,adjacencyMatrix: no visible global function definition for 'new'
[,directedEdge: no visible global function definition for 'new'
[,edgeList: no visible global function definition for 'new'
[,incidenceMatrix: no visible global function definition for 'new'
[,undirectedEdge: no visible global function definition for 'new'
[,vertexSet: no visible global function definition for 'new'
[[,directedEdge: no visible global function definition for 'new'
adjacencyList,multiGraph: no visible global function definition for
  'as'
adjacencyList,simpleGraph: no visible global function definition for
  'as'
adjacencyList<-,multiGraph: no visible global function definition for
  'new'
adjacencyList<-,simpleGraph: no visible global function definition for
  'new'
adjacencyMatrix,simpleGraph: no visible global function definition for
  'as'
adjacencyMatrix<-,simpleGraph: no visible global function definition
  for 'new'
coerce,adjacencyList-adjacencyMatrix: no visible global function
  definition for 'new'
coerce,adjacencyList-incidenceList: no visible global function
  definition for 'new'
coerce,adjacencyList-incidenceMatrix: no visible global function
  definition for 'is'
coerce,adjacencyList-incidenceMatrix: no visible global function
  definition for 'new'
coerce,adjacencyMatrix-adjacencyList: no visible global function
  definition for 'new'
coerce,adjacencyMatrix-incidenceList: no visible global function
  definition for 'new'
coerce,adjacencyMatrix-incidenceMatrix: no visible global function
  definition for 'is'
coerce,adjacencyMatrix-incidenceMatrix: no visible global function
  definition for 'new'
coerce,anyGraph-generalGraph: no visible global function definition for
  'new'
coerce,anyGraph-multiGraph: no visible global function definition for
  'new'
coerce,anyGraph-simpleGraph: no visible global function definition for
  'new'
coerce,directedEdge-undirectedEdge: no visible global function
  definition for 'new'
coerce,generalGraph-anyGraph: no visible global function definition for
  'new'
coerce,generalGraph-anyGraph: no visible global function definition for
  'as'
coerce,generalGraph-multiGraph: no visible global function definition
  for 'new'
coerce,generalGraph-multiGraph: no visible global function definition
  for 'as'
coerce,generalGraph-simpleGraph: no visible global function definition
  for 'new'
coerce,generalGraph-simpleGraph: no visible global function definition
  for 'as'
coerce,incidenceList-adjacencyList: no visible global function
  definition for 'new'
coerce,incidenceList-adjacencyList: no visible global function
  definition for 'is'
coerce,incidenceList-adjacencyMatrix: no visible global function
  definition for 'is'
coerce,incidenceList-adjacencyMatrix: no visible global function
  definition for 'new'
coerce,incidenceList-incidenceMatrix: no visible global function
  definition for 'is'
coerce,incidenceList-incidenceMatrix: no visible global function
  definition for 'new'
coerce,incidenceMatrix-adjacencyList: no visible global function
  definition for 'new'
coerce,incidenceMatrix-adjacencyMatrix: no visible global function
  definition for 'new'
coerce,incidenceMatrix-incidenceList: no visible global function
  definition for 'new'
coerce,incidenceMatrix-incidenceList: no visible global function
  definition for 'as'
coerce,list-edgeList: no visible global function definition for 'new'
coerce,mathgraph-simpleGraph: no visible global function definition for
  'new'
coerce,multiGraph-anyGraph: no visible global function definition for
  'new'
coerce,multiGraph-anyGraph: no visible global function definition for
  'as'
coerce,multiGraph-generalGraph: no visible global function definition
  for 'new'
coerce,multiGraph-generalGraph: no visible global function definition
  for 'as'
coerce,multiGraph-simpleGraph: no visible global function definition
  for 'new'
coerce,multiGraph-simpleGraph: no visible global function definition
  for 'as'
coerce,simpleGraph-anyGraph: no visible global function definition for
  'new'
coerce,simpleGraph-anyGraph: no visible global function definition for
  'as'
coerce,simpleGraph-generalGraph: no visible global function definition
  for 'new'
coerce,simpleGraph-generalGraph: no visible global function definition
  for 'as'
coerce,simpleGraph-mathgraph: no visible global function definition for
  'as'
coerce,simpleGraph-mathgraph: no visible binding for global variable
  'is'
coerce,simpleGraph-multiGraph: no visible global function definition
  for 'new'
coerce,simpleGraph-multiGraph: no visible global function definition
  for 'as'
coerce,undirectedEdge-directedEdge: no visible global function
  definition for 'new'
coerce,vector-directedEdge: no visible global function definition for
  'new'
coerce,vector-undirectedEdge: no visible global function definition for
  'new'
coerce,vector-vertexSet: no visible global function definition for
  'new'
coerce<-,generalGraph-anyGraph: no visible global function definition
  for 'slot<-'
coerce<-,generalGraph-anyGraph: no visible global function definition
  for 'slot'
coerce<-,multiGraph-anyGraph: no visible global function definition for
  'as'
coerce<-,multiGraph-anyGraph: no visible global function definition for
  'as<-'
coerce<-,multiGraph-anyGraph: no visible global function definition for
  'slot<-'
coerce<-,multiGraph-anyGraph: no visible global function definition for
  'slot'
coerce<-,multiGraph-generalGraph: no visible global function definition
  for 'slot<-'
coerce<-,multiGraph-generalGraph: no visible global function definition
  for 'slot'
coerce<-,simpleGraph-anyGraph: no visible global function definition
  for 'as'
coerce<-,simpleGraph-anyGraph: no visible global function definition
  for 'as<-'
coerce<-,simpleGraph-anyGraph: no visible global function definition
  for 'slot<-'
coerce<-,simpleGraph-anyGraph: no visible global function definition
  for 'slot'
coerce<-,simpleGraph-generalGraph: no visible global function
  definition for 'as'
coerce<-,simpleGraph-generalGraph: no visible global function
  definition for 'as<-'
coerce<-,simpleGraph-generalGraph: no visible global function
  definition for 'slot<-'
coerce<-,simpleGraph-generalGraph: no visible global function
  definition for 'slot'
coerce<-,simpleGraph-multiGraph: no visible global function definition
  for 'slot<-'
coerce<-,simpleGraph-multiGraph: no visible global function definition
  for 'slot'
display,anyGraph: no visible global function definition for 'as'
display,generalGraph: no visible global function definition for 'as'
display,multiGraph: no visible global function definition for 'as'
display,simpleGraph: no visible global function definition for 'plot'
display,simpleGraph: no visible global function definition for 'as'
incidenceList,generalGraph: no visible global function definition for
  'as'
incidenceList,multiGraph: no visible global function definition for
  'as'
incidenceList,simpleGraph: no visible global function definition for
  'as'
incidenceList<-,generalGraph: no visible global function definition for
  'new'
incidenceList<-,multiGraph: no visible global function definition for
  'new'
incidenceList<-,simpleGraph: no visible global function definition for
  'new'
incidenceMatrix,generalGraph: no visible global function definition for
  'as'
incidenceMatrix,multiGraph: no visible global function definition for
  'as'
incidenceMatrix,simpleGraph: no visible global function definition for
  'as'
incidenceMatrix<-,generalGraph: no visible global function definition
  for 'new'
incidenceMatrix<-,multiGraph: no visible global function definition for
  'new'
incidenceMatrix<-,simpleGraph: no visible global function definition
  for 'new'
initialize,adjacencyList: no visible global function definition for
  'new'
initialize,adjacencyList: no visible global function definition for
  'as'
initialize,adjacencyMatrix: no visible global function definition for
  'as'
initialize,adjacencyMatrix: no visible global function definition for
  'is'
initialize,directedEdge: no visible global function definition for 'is'
initialize,directedEdge: no visible global function definition for 'as'
initialize,edgeList: no visible global function definition for 'is'
initialize,edgeList: no visible global function definition for
  'callNextMethod'
initialize,generalGraph : <anonymous>: no visible global function
  definition for 'is'
initialize,incidenceList: no visible global function definition for
  'new'
initialize,incidenceMatrix: no visible global function definition for
  'as'
initialize,incidenceMatrix: no visible global function definition for
  'is'
initialize,multiGraph: no visible global function definition for 'new'
initialize,multiGraph : <anonymous>: no visible global function
  definition for 'is'
initialize,simpleGraph: no visible global function definition for 'as'
initialize,undirectedEdge: no visible global function definition for
  'as'
initialize,vertexSet: no visible global function definition for 'as'
names<-,adjacencyList: no visible global function definition for 'new'
names<-,adjacencyMatrix: no visible global function definition for
  'new'
names<-,incidenceList: no visible global function definition for 'new'
names<-,incidenceMatrix: no visible global function definition for
  'new'
recode,directedEdge-vertexSet-vertexSet: no visible global function
  definition for 'is'
recode,directedEdge-vertexSet-vertexSet: no visible global function
  definition for 'new'
recode,edgeList-vertexSet-vertexSet: no visible global function
  definition for 'new'
recode,undirectedEdge-vertexSet-vertexSet: no visible global function
  definition for 'new'
show,incidenceList: no visible global function definition for 'show'
Undefined global functions or variables:
  as as<- callNextMethod is new plot show slot slot<-
Consider adding
  importFrom("graphics", "plot")
  importFrom("methods", "as", "as<-", "callNextMethod", "is", "new",
             "show", "slot", "slot<-")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').