关于plyr错误的问题:as.double(y)中的错误:无法将类型“s4”强制为类型“double”的向量

sessionInfo()

text() statusText()

CRAN :::

twitteR:::statusSource(x)

library(plyr)
library(twitteR)
## simplify the call to see what is going on - function first
fooFun <- function(x) {
    data.frame(text = statusText(x), favorited=favorited(x),
               created=created(x), truncated=twitteR:::truncated(x),
               id=id(x), statusSource=twitteR:::statusSource(x),
               screenName=screenName(x))
}
## now ldply it
out <- ldply(searchTwitter("rstats", session = getCurlHandle(), n = 10), fooFun)
## show some of it:
head(out)

tw <- ldply(searchTwitter("rstats", session=getCurlHandle(), n=10), 
              function(x)  c(text=x@text, favorited=x@favorited, created=x@created, 
                             truncated=x@truncated, id=x@id, statusSource=x@statusSource, 
                             screenName=x@screenName )
                          )