# R 3.3 compatibility:

importFrom("grDevices", "chull", "col2rgb", "colorRamp",
             "colorRampPalette", "grey", "rgb")

importFrom("graphics", "abline", "arrows", "axis", "box", "grid",
             "image", "legend", "lines", "mtext", "par", "points",
             "polygon", "rect", "segments", "strwidth", "text")

importFrom("stats", "aggregate", "approxfun", "as.dist", "as.formula",
             "complete.cases", "cov", "formula", "median", "model.frame",
             "na.omit", "na.pass", "quantile", "rnorm", "runif", "sd",
             "splinefun", "update")

importFrom("utils", "head", "object.size")

importFrom(methods,
  setClass,
  representation,
  prototype,
  new,
  isGeneric,
  setGeneric,
  setReplaceMethod,
  setMethod,
  as,
  show,
  slot
)


importFrom(MASS,
  isoMDS
)

importFrom(digest,
  digest
)

importFrom(RColorBrewer,
  brewer.pal
)

importFrom(grid,
  gpar,
	grid.text,
  unit
)

importFrom(lattice,
  levelplot,
  trellis.par.get,
  panel.levelplot,
  panel.abline,
  panel.lines,
  panel.polygon,
  panel.segments,
  panel.grid
)

importFrom(cluster, 
  daisy,
  pam,
  silhouette
)

importFrom(graphics, 
  plot
)

importFrom(plyr, 
  idata.frame,
  ddply,
  llply,
  ldply,
  dlply,
  join,
  summarise
)

importFrom(reshape, 
  melt,
  melt.data.frame,
  cast
)

importFrom(scales,
  rescale,
  col_factor
)

importFrom(stringr, 
  fixed,
  str_c,
  str_split,
  str_trim
)

importFrom(sp,
  CRS,
  SpatialPoints,
  SpatialPointsDataFrame,
  coordinates, 
  "coordinates<-", 
  proj4string, 
  "proj4string<-",
  rbind.SpatialPoints
)

importFrom(Hmisc, 
  hdquantile,
	wtd.mean, 
  wtd.var, 
  wtd.quantile, 
  wtd.rank, 
  wtd.table
)

importFrom(plotrix, 
  soil.texture,
	triax.points
)

exportClasses(SoilProfileCollection)

exportMethods(  
  "[",
  "$",
  "$<-",
  coordinates,
  "coordinates<-",
  "depths<-", 
  depth_units,
  "depth_units<-",
  diagnostic_hz,
  "diagnostic_hz<-",
  horizons,
  "horizons<-",
  horizonDepths,
  idname,
  length,
  max,
  metadata,
  "metadata<-", 
  min,
  names,
  nrow,
  plot,
  profileApply,
  profile_compare,
  profile_id,
  proj4string,
  "proj4string<-",
  site,
  "site<-",
  slab,
  slice
)

exportPattern("^[^\\.]")