Found export directive that requires package ‘methods’:
  ‘exportClasses’
Remove all such namespace directives (if obsolete) or ensure that the
DESCRIPTION Depends or Imports field contains ‘methods’.
Found export directive that requires package ‘methods’:
  ‘exportClasses’
Remove all such namespace directives (if obsolete) or ensure that the
DESCRIPTION Depends or Imports field contains ‘methods’.
Found export directive that requires package ‘methods’:
  ‘exportClasses’
Remove all such namespace directives (if obsolete) or ensure that the
DESCRIPTION Depends or Imports field contains ‘methods’.
Package required but not available: ‘rgeos’

See section ‘The DESCRIPTION file’ in the ‘Writing R Extensions’
manual.
Found export directive that requires package ‘methods’:
  ‘exportClasses’
Remove all such namespace directives (if obsolete) or ensure that the
DESCRIPTION Depends or Imports field contains ‘methods’.
Package required but not available: ‘rgeos’

See section ‘The DESCRIPTION file’ in the ‘Writing R Extensions’
manual.
Found export directive that requires package 'methods':
  'exportClasses'
Remove all such namespace directives (if obsolete) or ensure that the
DESCRIPTION Depends or Imports field contains 'methods'.
Namespace in Imports field not imported from: ‘raster’
  All declared Imports should be used.
Namespace in Imports field not imported from: ‘raster’
  All declared Imports should be used.