Hi all,
I'm a newbie to R and I can't figure out how to fix this error I keep getting
in R-studio:
> "error setting certificate verify locations:\n CAfile: \n CApath: none\n"
Error in twInterfaceObj$doAPICall(cmd,params,"GET",...) :
Error: error setting certificate verify locations:
CAfile:
CApath: none
I'm trying to use the twitteR package to gather tweets from the below
function. It was working fine before, but I can't find a way to fix
the certificate issue.I tried using
>download.file(url="curl.haxx.se/ca/cacert.pem",
destfile="cacert.pem") with>credential$handshake(cainfo =
system.file("CurlSSL", "cacert.pem", package = "RCurl")) I saw
recommended on Stack Overflow but it didn't fix the issue.
>TweetFrame <- function(searchTerm, maxTweets)
{
twtList<-searchTwitter(searchTerm,n=maxTweets)
#twtList is involved in “variable” scoping so it only exists within the
function
# searchTerm needs to be a string so use "#hashtag"
twtTempFrame<- do.call("rbind", lapply(twtList,as.data.frame))
# as.data.frame() coerces each list element into a row
# lapply() applies this to all of the elements in twtList
# rbind() takes all the rows and puts them together
# do.call() gives rbind() all the rows as individual elements
return(twtTempFrame[order(as.integer(twtTempFrame$created)), ])
}
Thanks in advance for any help!
M
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