install.packages('txtplot', repos='http://c...content-available-to-author-only...t.org', lib=".")
Standard input is empty
Standard output is empty
Warning: unable to access index for repository http://c...content-available-to-author-only...t.org/src/contrib: cannot open URL 'http://c...content-available-to-author-only...t.org/src/contrib/PACKAGES' Warning message: package ‘txtplot’ is not available (for R version 3.3.2)