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

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

importFrom(cluster, 
  daisy
)

importFrom(graphics, 
  plot
)

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

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

importFrom(scales,
  rescale
)

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

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

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,
  spatial_subset
)

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