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Laura A DeCicco
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#' renameColumns
#'
#' Rename columns coming back from NWIS data retrievals
#'
#' @param rawData dataframe returned from retrieval functions
#' @keywords data import USGS web service
#' @return rawData dataframe with improved column names
#' @export
#' @examples
#' # This example requires an internet connection to run
#' rawData2 <- retrieveNWISData(siteNumber,c("00010","00060","00300"),"2001-01-01","2002-01-01",StatCd=c("00001","00003"))
Laura A DeCicco
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#' rawData2 <- renameColumns(rawData2)
renameColumns <- function(rawData){
columnNames <- names(rawData)
dataCols <- columnNames["X" == substring(columnNames, 1, 1)]
dataCol_cds <- dataCols["cd" == substring(dataCols, nchar(dataCols)-1, nchar(dataCols))]
dataCol_names <- dataCols[!(dataCols %in% dataCol_cds)]
pCodes <- sapply(strsplit(dataCol_names, "_"), function(x) x[2])
statCd <- sapply(strsplit(dataCol_names, "_"), function(x) x[3])
pcodeINFO <- getParameterInfo(pCodes,interactive=FALSE)
multipleCodes <- anyDuplicated(pCodes)
statCd <- sub("00001", "_Max", statCd)
statCd <- sub("00002", "_Min", statCd)
statCd <- sub("00003", "", statCd) # Leave mean blank
statCd <- sub("00011", "", statCd) # Also leaving blank
DDnum <- sapply(strsplit(dataCol_names, "_"), function(x) x[1])
DDnum <- gsub("X","",DDnum)
if (!any(duplicated(pCodes))){
dataColNames <- pcodeINFO$srsname[which(pcodeINFO$parameter_cd %in% pCodes)]
dataColNames <- paste(dataColNames,statCd,sep="")
} else {
dataColNames <- rep(NA,length(dataCol_names))
for (i in 1:length(dataCol_names)){
dataColNames[i] <- pcodeINFO$srsname[which(pcodeINFO$parameter_cd %in% pCodes[i])]
if((!(pCodes[i] %in% duplicated(pCodes))) && (pCodes[i] != pCodes[anyDuplicated(pCodes)])){
dataColNames[i] <- paste(dataColNames[i],statCd[i],sep="")
} else {
dataColNames[i] <- paste(dataColNames[i],statCd[i],"_",DDnum[i],sep="")
}
}
}
dataColCDS <- paste(dataColNames, "_cd")
columnNames[which(columnNames %in% dataCol_names)] <- dataColNames
columnNames[which(columnNames %in% dataCol_cds)] <- dataColCDS
columnNames <- gsub("[$,. ]","_",columnNames)
columnNames <- gsub("__","_",columnNames)
Laura A DeCicco
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names(rawData) <- columnNames
return(rawData)
}