If your data is boxed, reading and writing to a .csv file is rather straightforward. See hhttp://www.jsoftware.com/jwiki/Interfaces/Excel#head-6658573fdaf8a0c3928395 76e5847ceee82adcfb and ...\j601\system\packages\files\csv.ijs
R.E. Boss -----Oorspronkelijk bericht----- Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Namens Benedict G Archer Verzonden: maandag 11 september 2006 8:40 Aan: General forum Onderwerp: [Jgeneral] write/read array to/from file Been playing with J for a year+ and can do some useful things, but thought a good way to advance would be to use J for things I do all the time. Gave 40 students a chem test with 80 questions and have an array with the first column containing student names and the remaining columns for scores on each question. The task is to evaluate the test questions--e.g., which did everyone get right, any that everyone missed, etc. I'm trying to write the array to a file in a way that I can get it back easily and work with it. In APL2 I could save a workspace; in Matlab or Octave I could save a file, but haven't been able to figure out how to write the J noun to a file and get it back. 'm' fread, after fwrite, seems to count the box characters as part of the array, and freads isn't useful, at least in my attempts, either. Do I need to use a mapped file? I expect to be red-faced when someone tells me where the answer is in the help docs or the lab that shows how, but it's time for me to admit I need help. Suggestions on a best J approach to this simple task also welcome. Thanks in advance, Ben Archer ============================ Benedict G. Archer [EMAIL PROTECTED] ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
