performance.curves.plot: no visible global function definition for
  'postscript'
performance.curves.plot: no visible global function definition for
  'axis'
performance.curves.plot: no visible global function definition for
  'lines'
performance.curves.plot: no visible global function definition for
  'legend'
performance.curves.plot: no visible global function definition for
  'grid'
performance.curves.plot: no visible global function definition for
  'dev.off'
precision.recall.curves.plot: no visible global function definition for
  'postscript'
precision.recall.curves.plot: no visible global function definition for
  'axis'
precision.recall.curves.plot: no visible global function definition for
  'lines'
precision.recall.curves.plot: no visible global function definition for
  'legend'
precision.recall.curves.plot: no visible global function definition for
  'grid'
precision.recall.curves.plot: no visible global function definition for
  'dev.off'
Undefined global functions or variables:
  axis dev.off grid legend lines postscript
Consider adding
  importFrom("grDevices", "dev.off", "postscript")
  importFrom("graphics", "axis", "grid", "legend", "lines")
to your NAMESPACE file.
checkRd: (7) PerfMeas-package.Rd:31: invalid email address: {valentini,re}@di.unimi.it
performance.curves.plot: no visible global function definition for
  ‘postscript’
performance.curves.plot: no visible global function definition for
  ‘axis’
performance.curves.plot: no visible global function definition for
  ‘lines’
performance.curves.plot: no visible global function definition for
  ‘legend’
performance.curves.plot: no visible global function definition for
  ‘grid’
performance.curves.plot: no visible global function definition for
  ‘dev.off’
precision.recall.curves.plot: no visible global function definition for
  ‘postscript’
precision.recall.curves.plot: no visible global function definition for
  ‘axis’
precision.recall.curves.plot: no visible global function definition for
  ‘lines’
precision.recall.curves.plot: no visible global function definition for
  ‘legend’
precision.recall.curves.plot: no visible global function definition for
  ‘grid’
precision.recall.curves.plot: no visible global function definition for
  ‘dev.off’
Undefined global functions or variables:
  axis dev.off grid legend lines postscript
Consider adding
  importFrom("grDevices", "dev.off", "postscript")
  importFrom("graphics", "axis", "grid", "legend", "lines")
to your NAMESPACE file.
checkRd: (7) PerfMeas-package.Rd:31: invalid email address: {valentini,re}@di.unimi.it
performance.curves.plot: no visible global function definition for
  ‘postscript’
performance.curves.plot: no visible global function definition for
  ‘axis’
performance.curves.plot: no visible global function definition for
  ‘lines’
performance.curves.plot: no visible global function definition for
  ‘legend’
performance.curves.plot: no visible global function definition for
  ‘grid’
performance.curves.plot: no visible global function definition for
  ‘dev.off’
precision.recall.curves.plot: no visible global function definition for
  ‘postscript’
precision.recall.curves.plot: no visible global function definition for
  ‘axis’
precision.recall.curves.plot: no visible global function definition for
  ‘lines’
precision.recall.curves.plot: no visible global function definition for
  ‘legend’
precision.recall.curves.plot: no visible global function definition for
  ‘grid’
precision.recall.curves.plot: no visible global function definition for
  ‘dev.off’
Undefined global functions or variables:
  axis dev.off grid legend lines postscript
Consider adding
  importFrom("grDevices", "dev.off", "postscript")
  importFrom("graphics", "axis", "grid", "legend", "lines")
to your NAMESPACE file.
checkRd: (7) PerfMeas-package.Rd:31: invalid email address: {valentini,re}@di.unimi.it
File ‘PerfMeas/libs/PerfMeas.so’:
  Found no calls to: ‘R_registerRoutines’, ‘R_useDynamicSymbols’

It is good practice to register native routines and to disable symbol
search.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
performance.curves.plot: no visible global function definition for
  ‘postscript’
performance.curves.plot: no visible global function definition for
  ‘axis’
performance.curves.plot: no visible global function definition for
  ‘lines’
performance.curves.plot: no visible global function definition for
  ‘legend’
performance.curves.plot: no visible global function definition for
  ‘grid’
performance.curves.plot: no visible global function definition for
  ‘dev.off’
precision.recall.curves.plot: no visible global function definition for
  ‘postscript’
precision.recall.curves.plot: no visible global function definition for
  ‘axis’
precision.recall.curves.plot: no visible global function definition for
  ‘lines’
precision.recall.curves.plot: no visible global function definition for
  ‘legend’
precision.recall.curves.plot: no visible global function definition for
  ‘grid’
precision.recall.curves.plot: no visible global function definition for
  ‘dev.off’
Undefined global functions or variables:
  axis dev.off grid legend lines postscript
Consider adding
  importFrom("grDevices", "dev.off", "postscript")
  importFrom("graphics", "axis", "grid", "legend", "lines")
to your NAMESPACE file.
checkRd: (7) PerfMeas-package.Rd:31: invalid email address: {valentini,re}@di.unimi.it
File ‘PerfMeas/libs/PerfMeas.so’:
  Found no calls to: ‘R_registerRoutines’, ‘R_useDynamicSymbols’

It is good practice to register native routines and to disable symbol
search.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
performance.curves.plot: no visible global function definition for
  'postscript'
performance.curves.plot: no visible global function definition for
  'axis'
performance.curves.plot: no visible global function definition for
  'lines'
performance.curves.plot: no visible global function definition for
  'legend'
performance.curves.plot: no visible global function definition for
  'grid'
performance.curves.plot: no visible global function definition for
  'dev.off'
precision.recall.curves.plot: no visible global function definition for
  'postscript'
precision.recall.curves.plot: no visible global function definition for
  'axis'
precision.recall.curves.plot: no visible global function definition for
  'lines'
precision.recall.curves.plot: no visible global function definition for
  'legend'
precision.recall.curves.plot: no visible global function definition for
  'grid'
precision.recall.curves.plot: no visible global function definition for
  'dev.off'
Undefined global functions or variables:
  axis dev.off grid legend lines postscript
Consider adding
  importFrom("grDevices", "dev.off", "postscript")
  importFrom("graphics", "axis", "grid", "legend", "lines")
to your NAMESPACE file.
checkRd: (7) PerfMeas-package.Rd:31: invalid email address: {valentini,re}@di.unimi.it
performance.curves.plot: no visible global function definition for
  ‘postscript’
performance.curves.plot: no visible global function definition for
  ‘axis’
performance.curves.plot: no visible global function definition for
  ‘lines’
performance.curves.plot: no visible global function definition for
  ‘legend’
performance.curves.plot: no visible global function definition for
  ‘grid’
performance.curves.plot: no visible global function definition for
  ‘dev.off’
precision.recall.curves.plot: no visible global function definition for
  ‘postscript’
precision.recall.curves.plot: no visible global function definition for
  ‘axis’
precision.recall.curves.plot: no visible global function definition for
  ‘lines’
precision.recall.curves.plot: no visible global function definition for
  ‘legend’
precision.recall.curves.plot: no visible global function definition for
  ‘grid’
precision.recall.curves.plot: no visible global function definition for
  ‘dev.off’
Undefined global functions or variables:
  axis dev.off grid legend lines postscript
Consider adding
  importFrom("grDevices", "dev.off", "postscript")
  importFrom("graphics", "axis", "grid", "legend", "lines")
to your NAMESPACE file.
performance.curves.plot: no visible global function definition for
  ‘postscript’
performance.curves.plot: no visible global function definition for
  ‘axis’
performance.curves.plot: no visible global function definition for
  ‘lines’
performance.curves.plot: no visible global function definition for
  ‘legend’
performance.curves.plot: no visible global function definition for
  ‘grid’
performance.curves.plot: no visible global function definition for
  ‘dev.off’
precision.recall.curves.plot: no visible global function definition for
  ‘postscript’
precision.recall.curves.plot: no visible global function definition for
  ‘axis’
precision.recall.curves.plot: no visible global function definition for
  ‘lines’
precision.recall.curves.plot: no visible global function definition for
  ‘legend’
precision.recall.curves.plot: no visible global function definition for
  ‘grid’
precision.recall.curves.plot: no visible global function definition for
  ‘dev.off’
Undefined global functions or variables:
  axis dev.off grid legend lines postscript
Consider adding
  importFrom("grDevices", "dev.off", "postscript")
  importFrom("graphics", "axis", "grid", "legend", "lines")
to your NAMESPACE file.
performance.curves.plot: no visible global function definition for
  ‘postscript’
performance.curves.plot: no visible global function definition for
  ‘axis’
performance.curves.plot: no visible global function definition for
  ‘lines’
performance.curves.plot: no visible global function definition for
  ‘legend’
performance.curves.plot: no visible global function definition for
  ‘grid’
performance.curves.plot: no visible global function definition for
  ‘dev.off’
precision.recall.curves.plot: no visible global function definition for
  ‘postscript’
precision.recall.curves.plot: no visible global function definition for
  ‘axis’
precision.recall.curves.plot: no visible global function definition for
  ‘lines’
precision.recall.curves.plot: no visible global function definition for
  ‘legend’
precision.recall.curves.plot: no visible global function definition for
  ‘grid’
precision.recall.curves.plot: no visible global function definition for
  ‘dev.off’
Undefined global functions or variables:
  axis dev.off grid legend lines postscript
Consider adding
  importFrom("grDevices", "dev.off", "postscript")
  importFrom("graphics", "axis", "grid", "legend", "lines")
to your NAMESPACE file.
performance.curves.plot: no visible global function definition for
  ‘postscript’
performance.curves.plot: no visible global function definition for
  ‘axis’
performance.curves.plot: no visible global function definition for
  ‘lines’
performance.curves.plot: no visible global function definition for
  ‘legend’
performance.curves.plot: no visible global function definition for
  ‘grid’
performance.curves.plot: no visible global function definition for
  ‘dev.off’
precision.recall.curves.plot: no visible global function definition for
  ‘postscript’
precision.recall.curves.plot: no visible global function definition for
  ‘axis’
precision.recall.curves.plot: no visible global function definition for
  ‘lines’
precision.recall.curves.plot: no visible global function definition for
  ‘legend’
precision.recall.curves.plot: no visible global function definition for
  ‘grid’
precision.recall.curves.plot: no visible global function definition for
  ‘dev.off’
Undefined global functions or variables:
  axis dev.off grid legend lines postscript
Consider adding
  importFrom("grDevices", "dev.off", "postscript")
  importFrom("graphics", "axis", "grid", "legend", "lines")
to your NAMESPACE file.
performance.curves.plot: no visible global function definition for
  'postscript'
performance.curves.plot: no visible global function definition for
  'axis'
performance.curves.plot: no visible global function definition for
  'lines'
performance.curves.plot: no visible global function definition for
  'legend'
performance.curves.plot: no visible global function definition for
  'grid'
performance.curves.plot: no visible global function definition for
  'dev.off'
precision.recall.curves.plot: no visible global function definition for
  'postscript'
precision.recall.curves.plot: no visible global function definition for
  'axis'
precision.recall.curves.plot: no visible global function definition for
  'lines'
precision.recall.curves.plot: no visible global function definition for
  'legend'
precision.recall.curves.plot: no visible global function definition for
  'grid'
precision.recall.curves.plot: no visible global function definition for
  'dev.off'
Undefined global functions or variables:
  axis dev.off grid legend lines postscript
Consider adding
  importFrom("grDevices", "dev.off", "postscript")
  importFrom("graphics", "axis", "grid", "legend", "lines")
to your NAMESPACE file.
performance.curves.plot: no visible global function definition for
  ‘postscript’
performance.curves.plot: no visible global function definition for
  ‘axis’
performance.curves.plot: no visible global function definition for
  ‘lines’
performance.curves.plot: no visible global function definition for
  ‘legend’
performance.curves.plot: no visible global function definition for
  ‘grid’
performance.curves.plot: no visible global function definition for
  ‘dev.off’
precision.recall.curves.plot: no visible global function definition for
  ‘postscript’
precision.recall.curves.plot: no visible global function definition for
  ‘axis’
precision.recall.curves.plot: no visible global function definition for
  ‘lines’
precision.recall.curves.plot: no visible global function definition for
  ‘legend’
precision.recall.curves.plot: no visible global function definition for
  ‘grid’
precision.recall.curves.plot: no visible global function definition for
  ‘dev.off’
Undefined global functions or variables:
  axis dev.off grid legend lines postscript
Consider adding
  importFrom("grDevices", "dev.off", "postscript")
  importFrom("graphics", "axis", "grid", "legend", "lines")
to your NAMESPACE file.
performance.curves.plot: no visible global function definition for
  ‘postscript’
performance.curves.plot: no visible global function definition for
  ‘axis’
performance.curves.plot: no visible global function definition for
  ‘lines’
performance.curves.plot: no visible global function definition for
  ‘legend’
performance.curves.plot: no visible global function definition for
  ‘grid’
performance.curves.plot: no visible global function definition for
  ‘dev.off’
precision.recall.curves.plot: no visible global function definition for
  ‘postscript’
precision.recall.curves.plot: no visible global function definition for
  ‘axis’
precision.recall.curves.plot: no visible global function definition for
  ‘lines’
precision.recall.curves.plot: no visible global function definition for
  ‘legend’
precision.recall.curves.plot: no visible global function definition for
  ‘grid’
precision.recall.curves.plot: no visible global function definition for
  ‘dev.off’
Undefined global functions or variables:
  axis dev.off grid legend lines postscript
Consider adding
  importFrom("grDevices", "dev.off", "postscript")
  importFrom("graphics", "axis", "grid", "legend", "lines")
to your NAMESPACE file.
performance.curves.plot: no visible global function definition for
  'postscript'
performance.curves.plot: no visible global function definition for
  'axis'
performance.curves.plot: no visible global function definition for
  'lines'
performance.curves.plot: no visible global function definition for
  'legend'
performance.curves.plot: no visible global function definition for
  'grid'
performance.curves.plot: no visible global function definition for
  'dev.off'
precision.recall.curves.plot: no visible global function definition for
  'postscript'
precision.recall.curves.plot: no visible global function definition for
  'axis'
precision.recall.curves.plot: no visible global function definition for
  'lines'
precision.recall.curves.plot: no visible global function definition for
  'legend'
precision.recall.curves.plot: no visible global function definition for
  'grid'
precision.recall.curves.plot: no visible global function definition for
  'dev.off'
Undefined global functions or variables:
  axis dev.off grid legend lines postscript
Consider adding
  importFrom("grDevices", "dev.off", "postscript")
  importFrom("graphics", "axis", "grid", "legend", "lines")
to your NAMESPACE file.