embed2: no visible global function definition for ‘embed’
estimate_LC_pdf_state: no visible global function definition for
  ‘quantile’
estimate_LC_pdf_state: no visible global function definition for
  ‘bw.nrd0’
estimate_LC_pdf_state: no visible global function definition for ‘sd’
estimate_LC_pdf_state: no visible global function definition for
  ‘cov.wt’
estimate_LC_pdf_state: no visible binding for global variable ‘sd’
estimate_LC_pdf_state: no visible global function definition for
  ‘dnorm’
estimate_LC_pdf_state: no visible global function definition for ‘cov’
estimate_LC_pdf_state: no visible binding for global variable ‘median’
estimate_LC_pdf_state: no visible global function definition for
  ‘huge.select’
estimate_LC_pdf_state: no visible global function definition for ‘huge’
estimate_state_adj_matrix: no visible global function definition for
  ‘ks.test’
image2: no visible global function definition for ‘par’
image2: no visible global function definition for ‘colorRampPalette’
image2: no visible global function definition for ‘layout’
image2: no visible global function definition for ‘box’
image2: no visible global function definition for ‘axis’
image2: no visible global function definition for ‘mtext’
image2: no visible global function definition for ‘lines’
kmeanspp: no visible global function definition for ‘cov’
kmeanspp: no visible global function definition for ‘kmeans’
make_legend: no visible global function definition for
  ‘colorRampPalette’
make_legend: no visible global function definition for ‘axis’
make_legend: no visible global function definition for ‘mtext’
make_legend: no visible global function definition for ‘box’
mixed_LICORS: no visible global function definition for ‘cor’
mv_wKDE: no visible global function definition for ‘predict’
normalize: no visible global function definition for ‘is’
plot.LC: no visible global function definition for ‘box’
plot.LC: no visible global function definition for ‘abline’
plot.LC: no visible global function definition for ‘axis’
plot.LC: no visible global function definition for ‘grid’
plot.LC: no visible global function definition for ‘points’
plot.LC: no visible global function definition for ‘text’
plot.LC: no visible global function definition for ‘plot.new’
plot.LC: no visible global function definition for ‘legend’
plot.mixed_LICORS: no visible global function definition for ‘par’
plot.mixed_LICORS: no visible global function definition for
  ‘colorRampPalette’
plot.mixed_LICORS: no visible global function definition for ‘layout’
plot.mixed_LICORS: no visible global function definition for ‘matplot’
plot.mixed_LICORS: no visible global function definition for ‘box’
plot.mixed_LICORS: no visible global function definition for ‘axis’
plot.mixed_LICORS: no visible global function definition for ‘abline’
plot.mixed_LICORS: no visible global function definition for ‘mtext’
plot.mixed_LICORS: no visible global function definition for ‘legend’
plot.mixed_LICORS: no visible global function definition for ‘barplot’
plot.mixed_LICORS: no visible global function definition for ‘ts.plot’
plot.mixed_LICORS: no visible global function definition for ‘ts’
plot.mixed_LICORS: no visible global function definition for ‘lines’
plot.mixed_LICORS: no visible global function definition for ‘plot.new’
plot.mixed_LICORS: no visible global function definition for
  ‘plot.window’
plot.mixed_LICORS: no visible global function definition for ‘rect’
predict_FLC_given_PLC : <anonymous>: no visible binding for global
  variable ‘median’
rdensity: no visible global function definition for ‘rnorm’
search_knn: no visible global function definition for ‘ann’
wKDE: no visible global function definition for ‘na.omit’
wKDE: no visible global function definition for ‘bw.nrd’
wKDE: no visible global function definition for ‘quantile’
wKDE: no visible global function definition for ‘density’
wKDE: no visible global function definition for ‘approx’
Undefined global functions or variables:
  abline ann approx axis barplot box bw.nrd bw.nrd0 colorRampPalette
  cor cov cov.wt density dnorm embed grid huge huge.select is kmeans
  ks.test layout legend lines matplot median mtext na.omit par plot.new
  plot.window points predict quantile rect rnorm sd text ts ts.plot
Consider adding
  importFrom("grDevices", "colorRampPalette")
  importFrom("graphics", "abline", "axis", "barplot", "box", "grid",
             "layout", "legend", "lines", "matplot", "mtext", "par",
             "plot.new", "plot.window", "points", "rect", "text")
  importFrom("methods", "is")
  importFrom("stats", "approx", "bw.nrd", "bw.nrd0", "cor", "cov",
             "cov.wt", "density", "dnorm", "embed", "kmeans", "ks.test",
             "median", "na.omit", "predict", "quantile", "rnorm", "sd",
             "ts", "ts.plot")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').