R/getwedb.R

In Chen-Chaozong/getwinddata: easy to get wind data using WindR

#
#   extraTechInds: extra Technical Indicators of TTR and quantmod
#
#   Copyright (C) 2016  Chen Chaozong
#
#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 2 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

#' Retrieve Wind economic data
#'
#' @aliases getwedb
#' @param windcodes wind codes in w.edb
#' @param starttime starttime in w.edb
#' @param endtime endtime in w.edb
#' @param options options in w.edb, use w.menu to get more help
#' @param index.class index class of xts
#' @export

getwedb <- function(windcodes,starttime = "ED", endtime = Sys.time(), options = "",index.class="Date",timezone=Sys.timezone()){
  if(checkwindr()!=0) return(NULL)
  tmpdata <- w.edb(windcodes,starttime,endtime,options)
  if(!tmpdata$ErrorCode==0) {
    message(paste("Can not get wind data, error code:",tmpdata$ErrorCode))
    return(NULL)
  }
  out <- xts(tmpdata$Data[,-1],tmpdata$Data[,1],src='wind',updated=Sys.time())
  names(out) <- tolower(names(tmpdata$Data)[-1])
  if(is.xts(out)) {
    indexClass(out) <- index.class
    indexTZ(out) <- timezone
  }
  return(out)
}