# R 3.3 compatibility:

importFrom("grDevices", "chull", "col2rgb", "colorRamp", "rgb2hsv", "hsv",
             "colorRampPalette", "grey", "rgb", "convertColor", "colors", "hcl")

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", "cmdscale", "dist", "TukeyHSD", "aov", "terms",
             "weighted.mean")

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

importFrom(methods,
  setClass,
  setOldClass,
  representation,
  prototype,
  new,
  isGeneric,
  setGeneric,
  setReplaceMethod,
  setMethod,
  as,
  show,
  slot,
  "slot<-",
  .hasSlot,
  slotNames
)

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

importFrom(lattice,
  xyplot,
  levelplot,
  trellis.par.get,
  panel.levelplot,
  panel.abline,
  panel.lines,
  panel.polygon,
  panel.segments,
  panel.grid,
  panel.rect,
  panel.text,
  panel.points,
  strip.custom
)

importFrom(cluster,
  daisy,
  pam,
  silhouette
)

importFrom(graphics,
  plot
)

importFrom(plyr,
  ddply,
  llply,
  ldply,
  dlply,
  join,
  summarise,
  rbind.fill
)

import(data.table)

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

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

exportClasses(SoilProfileCollection)

exportMethods(
  "[",
  "$",
  "$<-",
  "[[",
  "[[<-",
  validSpatialData,
  coordinates,
  "coordinates<-",
  "depths<-",
  depth_units,
  "depth_units<-",
  diagnostic_hz,
  "diagnostic_hz<-",
  restrictions,
  "restrictions<-",
  horizons,
  "horizons<-",
  horizonDepths,
  idname,
  length,
  max,
  metadata,
  "metadata<-",
  min,
  names,
  nrow,
  plot,
  profileApply,
  profile_compare,
  profile_id,
  proj4string,
  "proj4string<-",
  site,
  "site<-",
  slab,
  slice,
  hzidname,
  "hzidname<-",
  hzID,
  "hzID<-",
  hzdesgnname,
  "hzdesgnname<-",
  hzDesgn,
  hztexclname,
  "hztexclname<-",
  filter,
  grepSPC,
  subApply
)

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