I got it. The boxed arrays needed to be boxed before the jappend and unboxed after the jread.
The modified script follows: NB.%scorecard2.ijs - saves & recalls globals FLAG and OWNED NB. the globals are currently boxed shape 350 5 and each contains NB. literal data NB. Created 2017-02-07 NB. ========================================================= require 'jfiles' NB.*savethem v Converts to binary and save in a J component file savethem=: verb define f=. CPATH,'flag-owned.ijf' jcreate f (< FLAG) jappend f (< OWNED) jappend f jsize f ) NB.*recallthem v Reads from component file recallthem=: verb define f=. CPATH,'flag-owned.ijf' FLAG0=: > jread f;0 OWNED0=: > jread f;1 0 ) NB. ========================================================= NB. test run follows: savethem'' recallthem'' FLAG0-:FLAG 1 OWNED0-:OWNED 1 -----Original Message----- From: Programming [mailto:[email protected]] On Behalf Of Tom Arneson Sent: Tuesday, February 7, 2017 21:21 To: [email protected] Cc: [email protected] Subject: [Jprogramming] Boxed tables in j component files I'm trying to save 2 boxed tables of literal data in a component file, and then read them back into J. I've tried converting the tables to binary with 3!:1 and then creating a component file with jcreate and using jappend to write to the jfile. This process seems to work OK. When I try to read the data, I get the error shown below in my sample run. My script file follows NB.%scorecard2.ijs - saves & recalls globals FLAG and OWNED NB. the globals are currently boxed shape 350 5 and each contains NB. literal data NB. Created 2017-02-07 NB. ========================================================= require 'jfiles' NB.*savethem v Converts to binary and save in a J component file savethem=: verb define f=. CPATH,'flag-owned.jf' jcreate f (3!:1 FLAG) jappend f (3!:1 OWNED) jappend f jsize f ) NB.*recallthem v Reads from component file recallthem=: verb define f=. CPATH,'flag-owned.jf' FLAG0=: 3!:2 jread f;0 OWNED0=: 3!:2 jread f;1 ) NB. ========================================================= NB. Sample run follows: Note'' JVERSION Engine: j805/j64/windows Release: commercial/2016-12-11T08:02:16 Library: 8.05.11 Qt IDE: 1.5.3s/5.6.2 Platform: Win 64 Installer: J805 install InstallPath: c:/program files/j64-805 Contact: www.jsoftware.com savethem'' 0 2 263936 0 recallthem'' |domain error: recallthem | FLAG0=: 3!:2 jread f;0 ) ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
