sectionview,function: warning in sectionview.fun(fun = model, dim =
  dim, center = center, axis = axis, npoints = npoints, col = col,
  mfrow = mfrow, Xname = Xname, yname = yname, Xscale = Xscale, yscale
  = yscale, xlim = xlim, ylim = ylim, title = title, ...): partial
  argument match of 'col' to 'col_surf'
view,character-function: warning in sectionview.fun(fun = model, dim =
  dim, center = center, axis = axis, npoints = ifelse(is.null(npoints),
  100, npoints), col = col, mfrow = mfrow, Xname = Xname, yname =
  yname, Xscale = Xscale, yscale = yscale, xlim = xlim, ylim = ylim,
  title = title, ...): partial argument match of 'col' to 'col_surf'
col.levels: no visible global function definition for 'col2rgb'
col.levels: no visible global function definition for 'rgb2hsv'
col.levels: no visible global function definition for 'hsv'
contourview.fun: no visible global function definition for 'combn'
contourview.km: no visible global function definition for 'combn'
contourview.km: no visible global function definition for 'col2rgb'
contourview.km: no visible global function definition for 'rgb'
contourview.list: no visible global function definition for 'combn'
fade: no visible global function definition for 'col2rgb'
fade: no visible global function definition for 'rgb'
sectionview.km: no visible global function definition for 'qnorm'
sectionview.km: no visible global function definition for 'rgb'
sectionview3d.fun: no visible global function definition for 'combn'
sectionview3d.km: no visible global function definition for 'combn'
sectionview3d.km: no visible global function definition for 'qnorm'
sectionview3d.km: no visible global function definition for 'rgb'
sectionview3d.list: no visible global function definition for 'combn'
translude: no visible global function definition for 'col2rgb'
Undefined global functions or variables:
  col2rgb combn hsv qnorm rgb rgb2hsv
Consider adding
  importFrom("grDevices", "col2rgb", "hsv", "rgb", "rgb2hsv")
  importFrom("stats", "qnorm")
  importFrom("utils", "combn")
to your NAMESPACE file.