The consensus is that it is a very bad idea for a file nominally described as a CSV file to have a varying numbers of fields from record to record. If you have need for such a file and go to whatever lengths you need to in order to create it, please mark it as something other than a CSV file when you are done. With this in mind, you may be in a better position to understand why the pre-built facilities do not provide much support in your endeavor. --------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/Batteries O.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...1k --------------------------------------------------------------------------- Sent from my phone. Please excuse my brevity.
Mehmet Suzen <msu...@mango-solutions.com> wrote: This might be obvious but I was wondering if anyone knows quick and easy way of writing out a CSV file with varying row lengths, ideally an initial data read from a CSV file which has the same format. See example below. I found it quite strange that R cannot write it in one go, so one must append blocks or post-process the file, is this true? (even Ruby can do it!!) Otherwise it puts ,"","" or similar for missing column values in the shorter length rows and fill=FALSE option do not work! I don't want to post-process if possible. See this post: http://r.789695.n4.nabble.com/Re-read-csv-trap-td3301924.html Example that generated Error! writeLines(c("A,B,C,D", "1,a,b,c", "2,f,g,c", "3,a,i,j", "4,a,b,c", "5,d,e,f", "6,g,h,i,j,k,l,m,n"), con=file("test.csv")) read.csv("test.csv") try(read.csv("test.csv",fill=FALSE)) LEGAL NOTICE\ This message is intended for the use o...{...{{dropped:14}} ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
