RE: Converting {{a,b},{c,d}} to just {a,b},{c,d} (no en closing parens) ?

*To*: mathgroup at smc.vnet.net*Subject*: [mg28774] RE: [mg28766] Converting {{a,b},{c,d}} to just {a,b},{c,d} (no en closing parens) ?*From*: "Barthelet, Luc" <lucb at ea.com>*Date*: Sat, 12 May 2001 01:36:42 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Use Line[ Join[{p1,p2,p3,p4},Table[...,{i,5,20}] ] ] -----Original Message----- From: aes [mailto:siegman at stanford.edu] To: mathgroup at smc.vnet.net Subject: [mg28774] [mg28766] Converting {{a,b},{c,d}} to just {a,b},{c,d} (no enclosing parens) ? How can I convert a list of pairs, like {{a,b},{c,d},{e,f},. . . }} into just a sequence of pairs, i.e. {a,b}, {c,d}, {e,f}, . . . with no outer { }'s? Reason for doing this? Want to define a Line in the form Line[{pt1, pt2, pt3, pt4, pt5, pt6, . . . . . . }] where some of the points, say pt1 through pt4 are individually defined; but then a sequence, say pt5 through pt20, are defined by a Table; then pt21, etc are back to individual definitions. I know -- I could break these into a sequence of Lines -- but it would be cleaner if there were a simple way to have one Line[ ] command with all the points inside it.