getMinimumArborescence: no visible global function definition for
  'capture.output'
getMinimumCutTree: no visible global function definition for
  'capture.output'
getMinimumCutTree: no visible global function definition for 'par'
getMinimumSpanningTree: no visible global function definition for
  'capture.output'
getShortestPathTree: no visible global function definition for
  'capture.output'
Undefined global functions or variables:
  capture.output par
Consider adding
  importFrom("graphics", "par")
  importFrom("utils", "capture.output")
to your NAMESPACE file.
getMinimumArborescence: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for ‘par’
getMinimumSpanningTree: no visible global function definition for
  ‘capture.output’
getShortestPathTree: no visible global function definition for
  ‘capture.output’
Undefined global functions or variables:
  capture.output par
Consider adding
  importFrom("graphics", "par")
  importFrom("utils", "capture.output")
to your NAMESPACE file.
getMinimumArborescence: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for ‘par’
getMinimumSpanningTree: no visible global function definition for
  ‘capture.output’
getShortestPathTree: no visible global function definition for
  ‘capture.output’
Undefined global functions or variables:
  capture.output par
Consider adding
  importFrom("graphics", "par")
  importFrom("utils", "capture.output")
to your NAMESPACE file.
getMinimumArborescence: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for ‘par’
getMinimumSpanningTree: no visible global function definition for
  ‘capture.output’
getShortestPathTree: no visible global function definition for
  ‘capture.output’
Undefined global functions or variables:
  capture.output par
Consider adding
  importFrom("graphics", "par")
  importFrom("utils", "capture.output")
to your NAMESPACE file.
getMinimumArborescence: no visible global function definition for
  'capture.output'
getMinimumCutTree: no visible global function definition for
  'capture.output'
getMinimumCutTree: no visible global function definition for 'par'
getMinimumSpanningTree: no visible global function definition for
  'capture.output'
getShortestPathTree: no visible global function definition for
  'capture.output'
Undefined global functions or variables:
  capture.output par
Consider adding
  importFrom("graphics", "par")
  importFrom("utils", "capture.output")
to your NAMESPACE file.
getMinimumArborescence: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for ‘par’
getMinimumSpanningTree: no visible global function definition for
  ‘capture.output’
getShortestPathTree: no visible global function definition for
  ‘capture.output’
Undefined global functions or variables:
  capture.output par
Consider adding
  importFrom("graphics", "par")
  importFrom("utils", "capture.output")
to your NAMESPACE file.
getMinimumArborescence: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for ‘par’
getMinimumSpanningTree: no visible global function definition for
  ‘capture.output’
getShortestPathTree: no visible global function definition for
  ‘capture.output’
Undefined global functions or variables:
  capture.output par
Consider adding
  importFrom("graphics", "par")
  importFrom("utils", "capture.output")
to your NAMESPACE file.
getMinimumArborescence: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for ‘par’
getMinimumSpanningTree: no visible global function definition for
  ‘capture.output’
getShortestPathTree: no visible global function definition for
  ‘capture.output’
Undefined global functions or variables:
  capture.output par
Consider adding
  importFrom("graphics", "par")
  importFrom("utils", "capture.output")
to your NAMESPACE file.
getMinimumArborescence: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for ‘par’
getMinimumSpanningTree: no visible global function definition for
  ‘capture.output’
getShortestPathTree: no visible global function definition for
  ‘capture.output’
Undefined global functions or variables:
  capture.output par
Consider adding
  importFrom("graphics", "par")
  importFrom("utils", "capture.output")
to your NAMESPACE file.
getMinimumArborescence: no visible global function definition for
  'capture.output'
getMinimumCutTree: no visible global function definition for
  'capture.output'
getMinimumCutTree: no visible global function definition for 'par'
getMinimumSpanningTree: no visible global function definition for
  'capture.output'
getShortestPathTree: no visible global function definition for
  'capture.output'
Undefined global functions or variables:
  capture.output par
Consider adding
  importFrom("graphics", "par")
  importFrom("utils", "capture.output")
to your NAMESPACE file.
getMinimumArborescence: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for ‘par’
getMinimumSpanningTree: no visible global function definition for
  ‘capture.output’
getShortestPathTree: no visible global function definition for
  ‘capture.output’
Undefined global functions or variables:
  capture.output par
Consider adding
  importFrom("graphics", "par")
  importFrom("utils", "capture.output")
to your NAMESPACE file.
getMinimumArborescence: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for
  ‘capture.output’
getMinimumCutTree: no visible global function definition for ‘par’
getMinimumSpanningTree: no visible global function definition for
  ‘capture.output’
getShortestPathTree: no visible global function definition for
  ‘capture.output’
Undefined global functions or variables:
  capture.output par
Consider adding
  importFrom("graphics", "par")
  importFrom("utils", "capture.output")
to your NAMESPACE file.
getMinimumArborescence: no visible global function definition for
  'capture.output'
getMinimumCutTree: no visible global function definition for
  'capture.output'
getMinimumCutTree: no visible global function definition for 'par'
getMinimumSpanningTree: no visible global function definition for
  'capture.output'
getShortestPathTree: no visible global function definition for
  'capture.output'
Undefined global functions or variables:
  capture.output par
Consider adding
  importFrom("graphics", "par")
  importFrom("utils", "capture.output")
to your NAMESPACE file.