gplot1: warning in grep(pat = "block", search()): partial argument
  match of 'pat' to 'pattern'
gplot2: warning in grep(pat = "block", search()): partial argument
  match of 'pat' to 'pattern'
loadnetwork2: warning in grep(patt = "^ *$", x = as.character(line)):
  partial argument match of 'patt' to 'pattern'
loadpajek: warning in grep(patt = "^ *$", x = as.character(line)):
  partial argument match of 'patt' to 'pattern'
savecluster: warning in grep(patt = "w32", x = version["os"]): partial
  argument match of 'patt' to 'pattern'
savematrix: warning in grep(patt = "w32", x = version["os"]): partial
  argument match of 'patt' to 'pattern'
savenetwork: warning in grep(patt = "w32", x = version["os"]): partial
  argument match of 'patt' to 'pattern'
savepajek: warning in grep(patt = "w32", x = version["os"]): partial
  argument match of 'patt' to 'pattern'
savevector: warning in grep(patt = "w32", x = version["os"]): partial
  argument match of 'patt' to 'pattern'
ad: no visible global function definition for 'median'
check.these.par: no visible global function definition for
  'crit.fun.tmp'
check.these.par: no visible binding for global variable 'useM'
crit.fun: no visible global function definition for 'crit.fun.tmp'
crit.fun: no visible binding for global variable 'useM'
find.m: no visible global function definition for 'optimize'
gen.crit.fun: no visible global function definition for 'na.omit'
gen.crit.fun: no visible binding for global variable 's'
genRandomPar: no visible global function definition for 'runif'
genRandomParGroups: no visible global function definition for 'runif'
gplot1: no visible global function definition for 'gray'
gplot1: no visible global function definition for 'gplot'
gplot2: no visible global function definition for 'gray'
gplot2: no visible global function definition for 'gplot'
loadmatrix: no visible global function definition for 'read.table'
loadnetwork: no visible global function definition for 'read.table'
loadnetwork: no visible global function definition for 'Matrix'
loadnetwork2: no visible global function definition for 'read.table'
loadnetwork2: no visible global function definition for 'Matrix'
loadvector: no visible global function definition for 'read.table'
loadvector2: no visible global function definition for 'read.table'
opt.par: no visible global function definition for 'opt.par.tmp'
opt.random.par: no visible global function definition for 'na.omit'
opt.random.par: no visible global function definition for 'opt.par.tmp'
opt.these.par: no visible global function definition for 'opt.par.tmp'
opt.these.par: no visible binding for global variable 'm'
plot.mat: no visible global function definition for 'par'
plot.mat: no visible global function definition for 'grey'
plot.mat: no visible global function definition for 'plot.default'
plot.mat: no visible global function definition for 'rect'
plot.mat: no visible global function definition for 'segments'
plot.mat: no visible global function definition for 'text'
plot.mat: no visible global function definition for 'title'
plot.mat: no visible global function definition for 'mtext'
plot.mat: no visible global function definition for 'gray'
plot.mat.nm: no visible binding for global variable 'par'
plot.mat.nm: no visible global function definition for 'par'
plot.mat.nm: no visible global function definition for 'title'
savematrix: no visible global function definition for 'write.table'
savenetwork: no visible global function definition for 'as'
savenetwork: no visible global function definition for 'write.table'
sedist: no visible global function definition for 'as.dist'
Undefined global functions or variables:
  Matrix as as.dist crit.fun.tmp gplot gray grey m median mtext na.omit
  opt.par.tmp optimize par plot.default read.table rect runif s
  segments text title useM write.table
Consider adding
  importFrom("grDevices", "gray", "grey")
  importFrom("graphics", "mtext", "par", "plot.default", "rect",
             "segments", "text", "title")
  importFrom("methods", "as")
  importFrom("stats", "as.dist", "median", "na.omit", "optimize",
             "runif")
  importFrom("utils", "read.table", "write.table")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').