#' Imports data from NWIS about meaured parameter based on user-supplied parameter code.
#' Imports data from NWIS about meaured parameter based on user-supplied parameter code.
#' This function gets the data from here: \url{http://nwis.waterdata.usgs.gov/nwis/pmcodes}
#' This function gets the data from here: \url{http://nwis.waterdata.usgs.gov/nwis/pmcodes}
#'
#'
#' @param parameterCd vector USGS parameter code. This is usually an 5 digit number.
#' @param parameterCd vector of USGS parameter codes. This is usually an 5 digit number.
#' @param interactive logical Option for interactive mode. If true, there is user interaction for error handling and data checks.
#' @param interactive logical Option for interactive mode. If true, there is user interaction for error handling and data checks.
#' @keywords data import USGS web service
#' @keywords data import USGS web service
#' @return parameterData dataframe with all information from the USGS about the particular parameter (usually code, name, short name, units, and CAS registry numbers)
#' @return parameterData dataframe with all information from the USGS about the particular parameter (usually code, name, short name, units, and CAS registry numbers)
