R/summary_dv.R

In pcreneau/demopackage:

#' @title Summary DD
#' @description calculate max and min of year
#' @export
#' @importFrom dataRetrieval readNWISdv
#' @importFrom dataRetrieval renameNWISColumns
#' @importFrom dplyr mutate
#' @importFrom dplyr group_by
#' @importFrom dplyr summarise
#' @param site character site number
#'
#' @examples
#' sum_table <- summary_dv("05398000")
#'
#'
#'
summary_dv <- function(site){
  doy <- Date <- Flow <- ".dplyr"


  dv_data <- readNWISdv(siteNumbers=site,
                        parameterCd = "00060", startDate = "", endDate = "")

  dv_summ <- renameNWISColumns(dv_data)
  dv_summ <- mutate(dv_summ, doy = as.numeric(strftime(Date, format = "%j")))
  dv_summ <- group_by(dv_summ, doy)
  dv_summ <- summarise(dv_summ,
                       max = max(Flow, na.rm = TRUE),
                       min = min(Flow, na.rm = TRUE))
  return(dv_summ)

}

.onAttach <- function(libname, pkgname) {
  packageStartupMessage("Although this software program has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS or the U.S. Government as to the accuracy and functioning of the program and related program material nor shall the fact of distribution constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith.")
}
#summary_dv("08279500")