sortandprint=:4 : 0 text=.'b' fread y
text=./:~text text=.text,&.>LF (;text) fwrite x ) The 'b' option means box each line. y is file to read, x is file to write sorted. If you are dealing with windows and need CRLF as a line separator, replace the LF with <CRLF. On Sun, May 26, 2013 at 1:50 PM, Murray Eisenberg <[email protected]>wrote: > I'm really out of practice with J, and the meager-to-nonexistent > documentation is not helping me. I have a very simple task to perform. I > have a text file infile.txt on my desktop and here's what I want to do: > > (1) read the file as lines (so I don't get all the end-of-line symbols); > (2) sort the file's lines (alphabetically) > (3) write out the result as a new text file, say outfile.txt, also on my > desktop. > > I can do this trivially in Mathematica: > > t = Import["~/Desktop/infile.txt", "Lines"] > Export["~/Desktop/outfile.txt", Sort[t]] > > But how would I do this in J (which, for longer files, ought to be faster) > and how would I discover how to do it? I prefer to use named library > functions where applicable. > > I tried the following in J801, after looking into text.ijs from J602: > > load 'files' > t=. fread '~/Desktop/infile.txt > load 'text' > cuttext t > | value error: cuttext > > What happened there? > > [Hope this is not too basic for this forum (as compared with > [email protected]).] > > --- > Murray Eisenberg [email protected] > Mathematics & Statistics Dept. > Lederle Graduate Research Tower phone 413 549-1020 (H) > University of Massachusetts 413 545-2838 (W) > 710 North Pleasant Street fax 413 545-1801 > Amherst, MA 01003-9305 > > > > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
