I had to download the CERT again. It could be the case that the installation of R had an earlier version. By adding the below code, it worked fine.
download.file(url="http://curl.haxx.se/ca/cacert.pem", destfile="cacert.pem")
Domanda
I am coming across a certificate error when i am trying to fetch tweets using R. I looked around and all i could find is that for windows there is a need to install the rCurl library. I could not find any information for mac. I tried what was suggested for windows but could not find anything. Any help is much appreciated.
install.packages('twitteR')
install.packages('plyr')
install.packages('stringr')
install.packages('ggplot2')
library(plyr)
library(stringr)
library(ggplot2)
library(twitteR)
requestURL <- "https://api.twitter.com/oauth/request_token"
accessURL = "http://api.twitter.com/oauth/access_token"
authURL = "http://api.twitter.com/oauth/authorize"
consumerKey = "xxxxxxxx"
consumerSecret = "xxxxxxxx"
Cred <- OAuthFactory$new(consumerKey=consumerKey,
consumerSecret=consumerSecret,
requestURL=requestURL,
accessURL=accessURL,
authURL=authURL)
Cred$handshake(cainfo = system.file("CurlSSL", "cacert.pem", package = "RCurl") )
7699317
registerTwitterOAuth(Cred)
save(Cred, file="twitter authentication.Rdata")
Everything works fine till this point. This is where i get the error
by.list <- searchTwitter('#beyonce', n=1000, cainfo="cacert.pem")
I get an error of:
[1] "error setting certificate verify locations:\n CAfile: cacert.pem\n CApath: none\n" Error in twInterfaceObj$doAPICall(cmd, params, "GET", ...) : Error: error setting certificate verify locations: CAfile: cacert.pem CApath: none
I tried the following command suggested for windows but it makes no difference on mac.
library(RCurl)
options(RCurlOptions = list(cainfo = system.file("CurlSSL", "cacert.pem", package = "RCurl")))
Is it because i am working on a mac? or is something wrong with my code?
Thanks!!!
Soluzione
I had to download the CERT again. It could be the case that the installation of R had an earlier version. By adding the below code, it worked fine.
download.file(url="http://curl.haxx.se/ca/cacert.pem", destfile="cacert.pem")