在R每小时获取在线数据

我想在每小时更新预测时获取天文台数据.

我的一次数据提取代码如下.

library(RCurl)
web <- getURL("http://www.hko.gov.hk/contente.htm")
web <- unlist(strsplit(web, "\r\n"))
head(web)

temp <- unlist(strsplit(web[1245], ""))
MINtemp <- vector()
MAXtemp <- vector()
for (i in 1:9){
    mintemp <- substr(temp[2*i-1], 
              nchar(temp[2*i-1])-1, 
              nchar(temp[2*i-1]))
    mintemp <- as.numeric(mintemp)
    MINtemp <- append(MINtemp, mintemp)

    maxtemp <- substr(temp[2*i], 
              nchar(temp[2*i])-1, 
              nchar(temp[2*i]))
    maxtemp <- as.numeric(maxtemp)
    MAXtemp <- append(MAXtemp, maxtemp)
}

status <- strsplit(
             substring(web[1242],12),
        ""))
MINRH <- vector()
MAXRH <- vector()
for (i in 1:9){
    minRH <- substr(RH[2*i-1], 
              nchar(RH[2*i-1])-1, 
              nchar(RH[2*i-1]))
    minRH <- as.numeric(minRH)
    MINRH <- append(MINRH, minRH)

    maxRH <- substr(RH[2*i], 
              nchar(RH[2*i])-1, 
              nchar(RH[2*i]))
    maxRH <- as.numeric(maxRH)
    MAXRH <- append(MAXRH, maxRH)
}

forecast <- paste("+", 1:9, "day(s)", sep=" ")
current <- as.character(rep(Sys.time(),9))
DATA <- data.frame(cbind(current,forecast,MINtemp, MAXtemp, MINRH, MAXRH, weather))
DATA

我得到的数据是

> DATA

                  current   forecast MINtemp MAXtemp MINRH MAXRH                                                                          weather
    1 2014-05-04 08:37:55 + 1 day(s)      21      25    80    95 Cloudy with a few showers and thunderstorms. Showers will be more frequent later
    2 2014-05-04 08:37:55 + 2 day(s)      22      25    75    90                        Cloudy with showers. A few squally thunderstorms at first
    3 2014-05-04 08:37:55 + 3 day(s)      21      24    75    95                                                        Cloudy with a few showers
    4 2014-05-04 08:37:55 + 4 day(s)      22      25    80    95                                                        Cloudy with a few showers
    5 2014-05-04 08:37:55 + 5 day(s)      23      26    80    95                              Cloudy with showers and a few squally thunderstorms
    6 2014-05-04 08:37:55 + 6 day(s)      23      26    80    95   Cloudy with showers. Showers will be heavy at times with squally thunderstorms
    7 2014-05-04 08:37:55 + 7 day(s)      22      25    80    95                                    Cloudy with showers and squally thunderstorms
    8 2014-05-04 08:37:55 + 8 day(s)      22      25    70    95                                                 Mainly cloudy with a few showers
    9 2014-05-04 08:37:55 + 9 day(s)      22      26    70    90                                                                    Mainly cloudy

我希望R脚本每小时运行一次.然后用于rbind(DATA, data)累积数据集.我使用CMD R BATCH搜索类似的主题.虽然我可以在R中使用Sys.sleep()和while(substr(Sys.time(), 15,16)=="00")吗？

我已经搜索了类似的任务来安排此链接

我在目录中找到了Rscript.exe C:\Program Files\R\R-3.0.2\bin\Rscript.exe

并且我保存了我的Rscipt D:\mydocument\test.r而我仍然不清楚如何完成任务.