kmeansN: no visible global function definition for 'kmeans'
kmeansN: no visible global function definition for 'aggregate'
kmeansN2: no visible global function definition for 'aggregate'
kmeansN2: no visible binding for global variable 'sd'
Undefined global functions or variables:
  aggregate kmeans sd
Consider adding
  importFrom("stats", "aggregate", "kmeans", "sd")
to your NAMESPACE file.
kmeansN: no visible global function definition for ‘kmeans’
kmeansN: no visible global function definition for ‘aggregate’
kmeansN2: no visible global function definition for ‘aggregate’
kmeansN2: no visible binding for global variable ‘sd’
Undefined global functions or variables:
  aggregate kmeans sd
Consider adding
  importFrom("stats", "aggregate", "kmeans", "sd")
to your NAMESPACE file.
kmeansN: no visible global function definition for ‘kmeans’
kmeansN: no visible global function definition for ‘aggregate’
kmeansN2: no visible global function definition for ‘aggregate’
kmeansN2: no visible binding for global variable ‘sd’
Undefined global functions or variables:
  aggregate kmeans sd
Consider adding
  importFrom("stats", "aggregate", "kmeans", "sd")
to your NAMESPACE file.
kmeansN: no visible global function definition for ‘kmeans’
kmeansN: no visible global function definition for ‘aggregate’
kmeansN2: no visible global function definition for ‘aggregate’
kmeansN2: no visible binding for global variable ‘sd’
Undefined global functions or variables:
  aggregate kmeans sd
Consider adding
  importFrom("stats", "aggregate", "kmeans", "sd")
to your NAMESPACE file.
kmeansN: no visible global function definition for 'kmeans'
kmeansN: no visible global function definition for 'aggregate'
kmeansN2: no visible global function definition for 'aggregate'
kmeansN2: no visible binding for global variable 'sd'
Undefined global functions or variables:
  aggregate kmeans sd
Consider adding
  importFrom("stats", "aggregate", "kmeans", "sd")
to your NAMESPACE file.
kmeansN: no visible global function definition for ‘kmeans’
kmeansN: no visible global function definition for ‘aggregate’
kmeansN2: no visible global function definition for ‘aggregate’
kmeansN2: no visible binding for global variable ‘sd’
Undefined global functions or variables:
  aggregate kmeans sd
Consider adding
  importFrom("stats", "aggregate", "kmeans", "sd")
to your NAMESPACE file.
kmeansN: no visible global function definition for ‘kmeans’
kmeansN: no visible global function definition for ‘aggregate’
kmeansN2: no visible global function definition for ‘aggregate’
kmeansN2: no visible binding for global variable ‘sd’
Undefined global functions or variables:
  aggregate kmeans sd
Consider adding
  importFrom("stats", "aggregate", "kmeans", "sd")
to your NAMESPACE file.
kmeansN: no visible global function definition for ‘kmeans’
kmeansN: no visible global function definition for ‘aggregate’
kmeansN2: no visible global function definition for ‘aggregate’
kmeansN2: no visible binding for global variable ‘sd’
Undefined global functions or variables:
  aggregate kmeans sd
Consider adding
  importFrom("stats", "aggregate", "kmeans", "sd")
to your NAMESPACE file.
kmeansN: no visible global function definition for ‘kmeans’
kmeansN: no visible global function definition for ‘aggregate’
kmeansN2: no visible global function definition for ‘aggregate’
kmeansN2: no visible binding for global variable ‘sd’
Undefined global functions or variables:
  aggregate kmeans sd
Consider adding
  importFrom("stats", "aggregate", "kmeans", "sd")
to your NAMESPACE file.
kmeansN: no visible global function definition for 'kmeans'
kmeansN: no visible global function definition for 'aggregate'
kmeansN2: no visible global function definition for 'aggregate'
kmeansN2: no visible binding for global variable 'sd'
Undefined global functions or variables:
  aggregate kmeans sd
Consider adding
  importFrom("stats", "aggregate", "kmeans", "sd")
to your NAMESPACE file.
kmeansN: no visible global function definition for ‘kmeans’
kmeansN: no visible global function definition for ‘aggregate’
kmeansN2: no visible global function definition for ‘aggregate’
kmeansN2: no visible binding for global variable ‘sd’
Undefined global functions or variables:
  aggregate kmeans sd
Consider adding
  importFrom("stats", "aggregate", "kmeans", "sd")
to your NAMESPACE file.
kmeansN: no visible global function definition for ‘kmeans’
kmeansN: no visible global function definition for ‘aggregate’
kmeansN2: no visible global function definition for ‘aggregate’
kmeansN2: no visible binding for global variable ‘sd’
Undefined global functions or variables:
  aggregate kmeans sd
Consider adding
  importFrom("stats", "aggregate", "kmeans", "sd")
to your NAMESPACE file.
kmeansN: no visible global function definition for 'kmeans'
kmeansN: no visible global function definition for 'aggregate'
kmeansN2: no visible global function definition for 'aggregate'
kmeansN2: no visible binding for global variable 'sd'
Undefined global functions or variables:
  aggregate kmeans sd
Consider adding
  importFrom("stats", "aggregate", "kmeans", "sd")
to your NAMESPACE file.