json - R - streamR - Number of items to replace is not a multiple of replacement length -


i'm attempting use streamr package in r siphon random sample of tweets twitter streaming api. when use samplestream function , try pull results parsetweets, 2 confusing warning messages cannot interpret, indicate samplestream cuts mid-process.

these warnings receive. first 1 appears when specify number of tweets i'd pull in samplestream function. second 1 appears regardless:

> samplestream(file.name = "tweets.json", +              timeout = 0, +              tweets = 200, +              oauth = twitter.oauth, +              verbose = true) capturing tweets... connection twitter stream closed after 2 seconds 200 tweets downloaded. > tweets <- parsetweets(tweets = "tweets.json", +                       simplify = false, +                       verbose = true) 66 tweets have been parsed. warning messages: 1: in readlines(tweets) : incomplete final line found on 'tweets.json' 2: in vect[notnulls] <- unlist(lapply(lst[notnulls], function(x) x[[field[1]]][[field[2]]][[as.numeric(field[3])]][[field[4]]])) :   number of items replace not multiple of replacement length

upon analysis of json, find last line (the last json object) in fact cut-off mid-line. appear samplestream isn't finishing job of pulling requested number of tweets. perhaps ties second warning message.

my script being authenticated use twitter api. key , secret have been substituted. authorization script works, included in case might related problem:

library(roauth)  twitter.oauth <- oauthfactory$new(consumerkey = [key],                                   consumersecret = [secret],                                   requesturl = "https://api.twitter.com/oauth/request_token",                                   accessurl = "https://api.twitter.com/oauth/access_token",                                   authurl =  "https://api.twitter.com/oauth/authorize")  twitter.oauth$handshake(cainfo = system.file("curlssl", "cacert.pem", package = "rcurl"))  save(twitter.oauth, file = "twitter_oauth.rda")

my script pulling sample of public tweets firehose:

library(streamr)  load("twitter_oauth.rda")  samplestream(file.name = "tweets.json",              timeout = 0,              tweets = 200,              oauth = twitter.oauth,              verbose = true)  tweets <- parsetweets(tweets = "tweets.json",                       simplify = false,                       verbose = true)


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