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#' Get all openSNP phenotypes, their variations, and how many users have data
#' available for a given phenotype.
#'
#' Either return data.frame with all results, or output a list, then call
#' the charicteristic by id (parameter = "id") or name (parameter =
#' "characteristic").
#'
#' @export
#' @family opensnp-fxns
#' @param df Return a data.frame of all data. The column known_variations
#' can take multiple values, so the other columns id, characteristic, and
#' number_of_users are replicated in the data.frame. Default: `FALSE`
#' @param ... Curl options passed on to [crul::HttpClient]
#' @return data.frame of results, or list if `df=FALSE`
#' @examples \dontrun{
#' # Get all data
#' allphenotypes(df = TRUE)
#'
#' # Output a list, then call the characterisitc of interest by 'id' or
#' # 'characteristic'
#' datalist <- allphenotypes()
#' names(datalist) # get list of all characteristics you can call
#' datalist[["ADHD"]] # get data.frame for 'ADHD'
#' datalist[c("mouth size","SAT Writing")] # get data.frame for 'ADHD'
#' }
allphenotypes <- function(df = FALSE, ...) {
out <- os_GET(paste0(osnp_base(), "phenotypes.json"), list(), ...)
out <- jsonlite::fromJSON(out, simplifyVector = FALSE)
if (df) {
ldply(out, function(x) data.frame(do.call(cbind, x),
stringsAsFactors = FALSE))
} else {
temp <- lapply(out, function(x) data.frame(do.call(cbind, x),
stringsAsFactors = FALSE))
cs <- str_trim(
str_replace_all(
sapply(out, function(x) x$characteristic), '\\(|\\)', ''), side = "both")
names(temp) <- cs
temp
}
}
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