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Adding limit and offset as params to read.socrata #127

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Adding limit and offset as params to read.socrata #127

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0536d13
Added limit and offset as param, somewhat redundant but wanted to con…
userfog Mar 6, 2017
c653217
corrected offset
userfog Mar 6, 2017
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10 changes: 9 additions & 1 deletion R/RSocrata.R
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Original file line number Diff line number Diff line change
Expand Up @@ -265,7 +265,7 @@ getSodaTypes <- function(response) {
#' @importFrom plyr rbind.fill
#' @export
read.socrata <- function(url, app_token = NULL, email = NULL, password = NULL,
stringsAsFactors = FALSE) {
stringsAsFactors = FALSE, limit = NULL, offset = NULL) {
validUrl <- validateUrl(url, app_token) # check url syntax, allow human-readable Socrata url
parsedUrl <- httr::parse_url(validUrl)
mimeType <- mime::guess_type(parsedUrl$path)
Expand All @@ -279,6 +279,14 @@ read.socrata <- function(url, app_token = NULL, email = NULL, password = NULL,
validUrl <- paste(validUrl, {'?'}, '$order=:id', sep='')
parsedUrl <- httr::parse_url(validUrl) # reparse because URL now has a query
}
if(!is.null(limit)){
validUrl <- paste(validUrl, '&', sprintf('$limit=%s',limit) , sep='')
parsedUrl <- httr::parse_url(validUrl) # reparse because URL now has a query
}
if(!is.null(offset)){
validUrl <- paste(validUrl, '&', sprintf('$offset=%s',offset) , sep='')
parsedUrl <- httr::parse_url(validUrl) # reparse because URL now has a query
}
if(!(mimeType %in% c('text/csv','application/json')))
stop("Error in read.socrata: ", mimeType, " not a supported data format.")
response <- getResponse(validUrl, email, password)
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