相关疑难解决方法(0)

我终于能够计算出我的抓取代码了.它似乎工作正常,然后突然再次运行它时,我收到以下错误消息:

Error in url[i] = paste("http://en.wikipedia.org/wiki/", gsub(" ", "_",  : 
  object of type 'closure' is not subsettable

我不知道为什么我在代码中没有改变任何内容.

请指教.

library(XML)
library(plyr)

names <- c("George Clooney", "Kevin Costner", "George Bush", "Amar Shanghavi")

for(i in 1:length(names)) {
    url[i] = paste('http://en.wikipedia.org/wiki/', gsub(" ","_", names[i]) , sep="")

    # some parsing code
}