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##generate the list of url | |
#產生空白的list存放欲抓網站的URL | |
url_list <- list() | |
#觀察原始網站如"http://lishi.tianqi.com/taibei/201101.html" | |
#月份'01'、'02'是字串格式,預先製作一個陣列存放 | |
month <- c('01','02','03','04','05','06','07', '08', '09', '10', '11', '12') | |
#利用迴圈自動產生月份網址 | |
for (year in 2011:2013){ | |
url <- paste('http://lishi.tianqi.com/taibei/',year,month,'.html',sep='') | |
url_list <- rbind(url_list,url) | |
} | |
#將產生的網址去格式化,方便讀取 | |
url_list <- unlist(url_list) |
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