title: Error writing to csv
body: <p>I'm attempting to write a data frame to csv but it seems to be complaining because the columns contain lists.</p>
  
  <p>I want to be able to do is access this data frame and call it into R at a later time. I don't care how to accomplish this (save as a text file etc).  This is a fairly large data set n=182305.  Any ideas to write it to a file that I can fairly quickly read into R (I'm not married to a csv file)</p>
  
  <p><strong>DATA Frame &amp; the Code I've Tried</strong></p>
  
  <pre><code>DF2&lt;-structure(list(word = c("3-D", "4-F", "4-H'er", "4-H", "A battery", 
  "a bon march"), pos.code = c("AN", "N", "N", "A", "h", "v"), 
      pos = list(c("A", "N"), "N", "N", "A", "h", "v"), noun = list(
          TRUE, TRUE, TRUE, FALSE, FALSE, FALSE), plural = list(
          FALSE, FALSE, FALSE, FALSE, FALSE, FALSE), noun.phrase = list(
          FALSE, FALSE, FALSE, FALSE, TRUE, FALSE), verb.usually.participle = list(
          FALSE, FALSE, FALSE, FALSE, FALSE, FALSE), transitive.verb = list(
          FALSE, FALSE, FALSE, FALSE, FALSE, FALSE), intransitive.verb = list(
          FALSE, FALSE, FALSE, FALSE, FALSE, FALSE), adjective = list(
          TRUE, FALSE, FALSE, TRUE, FALSE, FALSE), adverb = list(
          FALSE, FALSE, FALSE, FALSE, FALSE, TRUE), conjunction = list(
          FALSE, FALSE, FALSE, FALSE, FALSE, FALSE), preposition = list(
          FALSE, FALSE, FALSE, FALSE, FALSE, FALSE), interjection = list(
          FALSE, FALSE, FALSE, FALSE, FALSE, FALSE), pronoun = list(
          FALSE, FALSE, FALSE, FALSE, FALSE, FALSE), definite.article = list(
          FALSE, FALSE, FALSE, FALSE, FALSE, FALSE), indefinite.article = list(
          FALSE, FALSE, FALSE, FALSE, FALSE, FALSE), nominative = list(
          FALSE, FALSE, FALSE, FALSE, FALSE, FALSE)), .Names = c("word", 
  "pos.code", "pos", "noun", "plural", "noun.phrase", "verb.usually.participle", 
  "transitive.verb", "intransitive.verb", "adjective", "adverb", 
  "conjunction", "preposition", "interjection", "pronoun", "definite.article", 
  "indefinite.article", "nominative"), row.names = c(NA, 6L), class = "data.frame")
  
  write.table(DF2, file = "mobyPOS.csv", sep = " ", col.names = TRUE,qmethod = "double")
  </code></pre>
  
  <p>Error message I got:</p>
  
  <pre><code>&gt; write.table(DF2, file = "mobyPOS.csv", sep = " ", col.names = TRUE,qmethod = "double")
  Error in write.table(x, file, nrow(x), p, rnames, sep, eol, na, dec, as.integer(quote),  : 
    unimplemented type 'list' in 'EncodeElement'
  </code></pre>