importFrom(plyr, 
  ddply,
  llply,
  ldply,
  dlply,
  join
)

importFrom(RCurl,
  getURL,
  curlOptions,
  postForm
)


importFrom(sp,
  spTransform,
  CRS,
  "coordinates<-",
  "proj4string<-"  
)


importFrom(XML,
  htmlTreeParse,
  getNodeSet,
  xmlValue
)


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

importFrom(aqp, 
  "depths<-", 
  "site<-",
  diagnostic_hz,
  "diagnostic_hz<-",
  test_hz_logic,
  rgb2munsell
)

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