Re: Re: GridPlot

*To*: mathgroup at smc.vnet.net*Subject*: [mg45842] Re: [mg45818] Re: GridPlot*From*: Selwyn Hollis <sh2.7183 at misspelled.erthlink.net>*Date*: Tue, 27 Jan 2004 04:50:34 -0500 (EST)*References*: <200401240536.AAA07423@smc.vnet.net> <bv00jr$jf1$1@smc.vnet.net> <200401260653.BAA29790@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

/; is the short form of Condition. ----- Selwyn Hollis http://www.math.armstrong.edu/faculty/hollis (edit reply-to to reply) On Jan 26, 2004, at 1:53 AM, Harold Noffke wrote: > Selwyn: > > I liked your gridPlot module, and it is in my library. However, I > don't understand one Mathematica programming construct you used twice. > I've neither seen it before, nor have I been able to find a > programmer's definition for it in the Mathematica 5.0 Help System. In > the line of code ... > > {GrayLevel[0.], AbsoluteThickness[t_], Line[{{u_, y1_}, {u_, > y2_}}]} /; > > you use the /-character before the semicolon. There is an earlier > line where you also use this. > > Other than "division", I don't know what the /-character accomplishes > in this context. Does it go with the semicolon (which ends lines > without output)? I do know that if I take it out, your code > malfunctions. > > If there's an reference for this in the Help System, I'd also > appreciate a pointer to the correct bookmark. > > Regards, > Harold > >

**References**:**Any way to display vars internal to a function on interrupt?***From:*dont@agora.rdrop.com (Don Taylor)

**Re: GridPlot***From:*Harold.Noffke@wpafb.af.mil (Harold Noffke)