WFI: no visible binding for global variable 'dnorm'
bmeEst: no visible binding for global variable 'dnorm'
bmeEst: no visible global function definition for 'optimize'
catIrt: no visible binding for global variable 'dnorm'
catIrt: no visible global function definition for 'txtProgressBar'
catIrt: no visible global function definition for 'setTxtProgressBar'
eapEst: no visible binding for global variable 'dnorm'
itChoose: no visible binding for global variable 'dnorm'
itChoose: no visible global function definition for 'runif'
logLik.brm: no visible binding for global variable 'dnorm'
logLik.grm: no visible binding for global variable 'dnorm'
middleCat: no visible binding for global variable 'dnorm'
middleCat: no visible global function definition for 'runif'
mleEst: no visible global function definition for 'optimize'
plot.catIrt: no visible global function definition for 'devAskNewPage'
plot.catIrt: no visible global function definition for 'plot'
plot.catIrt: no visible global function definition for 'axis'
plot.catIrt: no visible global function definition for 'lines'
plot.catIrt: no visible global function definition for 'qnorm'
plot.catIrt: no visible global function definition for 'modifyList'
plot.catIrt: no visible binding for global variable 'plot'
plot.catIrt: no visible global function definition for 'mtext'
plot.catIrt: no visible global function definition for 'segments'
plot.catIrt: no visible global function definition for 'abline'
simIrt: no visible global function definition for 'runif'
startCat: no visible binding for global variable 'dnorm'
startCat: no visible global function definition for 'runif'
summary.catIrt: no visible global function definition for 'sd'
summary.catIrt: no visible global function definition for 'cor'
termCI: no visible global function definition for 'qnorm'
termGLR: no visible global function definition for 'logLik'
termSPRT: no visible global function definition for 'logLik'
wleEst: no visible global function definition for 'uniroot'
Undefined global functions or variables:
  abline axis cor devAskNewPage dnorm lines logLik modifyList mtext
  optimize plot qnorm runif sd segments setTxtProgressBar
  txtProgressBar uniroot
Consider adding
  importFrom("grDevices", "devAskNewPage")
  importFrom("graphics", "abline", "axis", "lines", "mtext", "plot",
             "segments")
  importFrom("stats", "cor", "dnorm", "logLik", "optimize", "qnorm",
             "runif", "sd", "uniroot")
  importFrom("utils", "modifyList", "setTxtProgressBar",
             "txtProgressBar")
to your NAMESPACE file.