使用purrr::map_dfr()
函数执行以下代码有时会限制每秒API时间的数量。
data.frame(location = c("sapporo", "aomori", "sendai", "morioka", "yamagata", "iwate")) %>%
purrr::map_dfr(.f = function(x) ggmap::geocode(as.character(x)))
警告讯息: 地理编码失败,状态为OVER_QUERY_LIMIT,location =“aomori”
我想提出类似sys.sleep (1)
的内容,但我该怎么做?
答案 0 :(得分:0)
好问题!在函数调用系统中('睡眠10')
geoc <- function(x) {
gc <-ggmap::geocode(as.character(x))
system('sleep 5') # sleep 5 seconds
return(gc)
}
data.frame(location = c("sapporo", "aomori", "sendai", "morioka", "yamagata",
"iwate")) %>%
purrr::map_df(., geoc)