checkRd: (-1) luzdat.Rd:21: Escaped LaTeX specials: \~
checkRd: (-1) luzdat.Rd:21: Escaped LaTeX specials: \~
Package required but not available: ‘maptools’

Package suggested but not available for checking: ‘rgdal’

See section ‘The DESCRIPTION file’ in the ‘Writing R Extensions’
manual.
Package required but not available: ‘maptools’

Package suggested but not available for checking: ‘rgdal’

See section ‘The DESCRIPTION file’ in the ‘Writing R Extensions’
manual.
checkRd: (-1) luzdat.Rd:21: Escaped LaTeX specials: \~
checkRd: (-1) luzdat.Rd:21: Escaped LaTeX specials: \~
checkRd: (-1) luzdat.Rd:21: Escaped LaTeX specials: \~
checkRd: (-1) luzdat.Rd:21: Escaped LaTeX specials: \~
checkRd: (-1) luzdat.Rd:21: Escaped LaTeX specials: \~
checkRd: (-1) luzdat.Rd:21: Escaped LaTeX specials: \~
Namespace in Imports field not imported from: ‘Matrix’
  All declared Imports should be used.
Namespace in Imports field not imported from: ‘Matrix’
  All declared Imports should be used.