as.kcca.hclust: no visible global function definition for ‘cutree’
bootFlexclust: no visible global function definition for ‘runif’
boxOverlap: no visible binding for global variable ‘quantile’
cclust: no visible global function definition for ‘complete.cases’
centMedian: no visible binding for global variable ‘median’
centOptim: no visible global function definition for ‘optim’
centOptim01: no visible global function definition for ‘optim’
clusterEllipses: no visible global function definition for ‘cov’
clusterHulls: no visible global function definition for
  ‘complete.cases’
clusterHulls: no visible global function definition for ‘median’
clusterHulls: no visible global function definition for ‘chull’
distCor: no visible global function definition for ‘cor’
getDifferentCluster: no visible global function definition for
  ‘solve_LSAP’
kcca: no visible global function definition for ‘complete.cases’
kccaFamily : <anonymous>: no visible binding for global variable
  ‘median’
kruskalTest: no visible global function definition for ‘kruskal.test’
kruskalTest: no visible global function definition for ‘p.adjust’
medianInside: no visible binding for global variable ‘median’
medianInside: no visible binding for global variable ‘quantile’
panelShadow: no visible global function definition for ‘hcl’
panelShadow: no visible global function definition for ‘approx’
panelShadowBP: no visible global function definition for ‘quantile’
panelShadowViolin: no visible global function definition for ‘density’
perturbClusters: no visible global function definition for ‘runif’
priceFeature : circle: no visible global function definition for
  ‘runif’
priceFeature : square: no visible global function definition for
  ‘runif’
propBarchart: no visible global function definition for ‘aggregate’
propBarchart: no visible global function definition for ‘p.adjust’
randomTourMatrix: no visible global function definition for ‘rnorm’
randomTourRennes: no visible global function definition for ‘rnorm’
shadowStars: no visible global function definition for ‘dist’
stepFlexclust : bestKcca: no visible global function definition for
  ‘runif’
stripes: no visible global function definition for ‘grey’
placeLabels,projAxes: no visible global function definition for ‘tail’
Undefined global functions or variables:
  aggregate approx chull complete.cases cor cov cutree density dist
  grey hcl kruskal.test median optim p.adjust quantile rnorm runif
  solve_LSAP tail
Consider adding
  importFrom("grDevices", "chull", "grey", "hcl")
  importFrom("stats", "aggregate", "approx", "complete.cases", "cor",
             "cov", "cutree", "density", "dist", "kruskal.test",
             "median", "optim", "p.adjust", "quantile", "rnorm", "runif")
  importFrom("utils", "tail")
to your NAMESPACE file.