BARRIEL: no visible global function definition for 'write.table'
FIFTH: no visible global function definition for 'write.table'
FindHaplo: no visible global function definition for 'write.table'
HapPerPop: no visible global function definition for 'read.table'
HapPerPop: no visible global function definition for 'write.table'
MCIC: no visible global function definition for 'write.table'
NINA.thr: no visible global function definition for 'pdf'
NINA.thr: no visible global function definition for 'dev.off'
NINA.thr: no visible global function definition for 'write.table'
SIC: no visible global function definition for 'write.table'
distance.comb: no visible global function definition for 'write.table'
double.plot: no visible global function definition for 'layout'
double.plot: no visible global function definition for 'mtext'
mergeNodes: no visible global function definition for 'write.table'
mutation.network: no visible global function definition for
  'write.table'
mutation.network: no visible global function definition for 'png'
mutation.network: no visible global function definition for 'dev.off'
mutation.network: no visible global function definition for 'plot'
mutation.network: no visible global function definition for 'mtext'
mutation.network: no visible global function definition for 'segments'
mutation.network: no visible global function definition for 'lines'
mutation.network: no visible global function definition for 'points'
mutation.network: no visible global function definition for 'text'
nt.gap.comb: no visible global function definition for 'write.table'
perc.thr: no visible global function definition for 'pdf'
perc.thr: no visible global function definition for 'dev.off'
perc.thr: no visible global function definition for 'plot'
perc.thr: no visible global function definition for 'points'
perc.thr: no visible global function definition for 'write.table'
pie.network: no visible global function definition for 'write.table'
pie.network: no visible global function definition for 'mtext'
pie.network: no visible global function definition for 'par'
pie.network: no visible global function definition for 'text'
pie.network: no visible global function definition for 'lines'
pie.network: no visible global function definition for 'colors'
pie.network: no visible global function definition for 'points'
pie.network: no visible global function definition for 'pie'
pop.dist: no visible global function definition for 'read.table'
pop.dist: no visible global function definition for 'write.table'
simplify.network: no visible global function definition for 'plot'
simplify.network: no visible global function definition for 'lines'
simplify.network: no visible global function definition for 'points'
simplify.network: no visible global function definition for 'text'
simplify.network: no visible global function definition for 'as.dist'
simuEvolution: no visible global function definition for 'write.table'
single.network: no visible global function definition for 'write.table'
single.network: no visible global function definition for 'pdf'
single.network: no visible global function definition for 'dev.off'
spatial.plot: no visible global function definition for 'write.table'
spatial.plot: no visible global function definition for 'plot'
spatial.plot: no visible global function definition for 'segments'
spatial.plot: no visible global function definition for 'text'
spatial.plot: no visible global function definition for 'dev.new'
zero.thr: no visible global function definition for 'write.table'
zero.thr: no visible global function definition for 'pdf'
zero.thr: no visible global function definition for 'dev.off'
Undefined global functions or variables:
  as.dist colors dev.new dev.off layout lines mtext par pdf pie plot
  png points read.table segments text write.table
Consider adding
  importFrom("grDevices", "colors", "dev.new", "dev.off", "pdf", "png")
  importFrom("graphics", "layout", "lines", "mtext", "par", "pie",
             "plot", "points", "segments", "text")
  importFrom("stats", "as.dist")
  importFrom("utils", "read.table", "write.table")
to your NAMESPACE file.