getHb: no visible global function definition for 'data'
getHb: no visible binding for global variable 'masshb'
getHb: no visible global function definition for 'read.table'
getHbgrid: no visible global function definition for 'data'
getHbgrid: no visible binding for global variable 'masshbgrid'
getHbgrid: no visible global function definition for 'txtProgressBar'
getHbgrid: no visible global function definition for 'read.table'
getHbgrid: no visible global function definition for
  'setTxtProgressBar'
getIso: no visible global function definition for 'read.table'
getIsoSet: no visible global function definition for 'txtProgressBar'
getIsoSet : <anonymous>: no visible global function definition for
  'setTxtProgressBar'
getTrk: no visible global function definition for 'read.table'
getTrkSet: no visible global function definition for 'txtProgressBar'
getTrkSet : <anonymous>: no visible global function definition for
  'setTxtProgressBar'
getZahb: no visible global function definition for 'read.table'
makeIso: no visible binding for global variable 'approx'
makeIso: no visible global function definition for 'approx'
makeIso : <anonymous>: no visible global function definition for
  'approx'
plotAstro: no visible global function definition for 'par'
plotAstro: no visible global function definition for 'box'
plotAstro: no visible global function definition for 'axis'
plotAstro: no visible global function definition for 'points'
plotAstro: no visible global function definition for 'lines'
showComposition: no visible global function definition for 'data'
showComposition: no visible binding for global variable 'compositions'
testComposition: no visible global function definition for 'data'
testComposition: no visible binding for global variable 'compositions'
Undefined global functions or variables:
  approx axis box compositions data lines masshb masshbgrid par points
  read.table setTxtProgressBar txtProgressBar
Consider adding
  importFrom("graphics", "axis", "box", "lines", "par", "points")
  importFrom("stats", "approx")
  importFrom("utils", "data", "read.table", "setTxtProgressBar",
             "txtProgressBar")
to your NAMESPACE file.

Found the following calls to data() loading into the global environment:
File 'stellaR/R/stellar.R':
  data(compositions)
  data(compositions)
  data(masshb)
  data(masshbgrid)
See section 'Good practice' in '?data'.