Re: GridPlot
- To: mathgroup at smc.vnet.net
- Subject: [mg45841] Re: GridPlot
- From: bobhanlon at aol.com (Bob Hanlon)
- Date: Tue, 27 Jan 2004 04:50:33 -0500 (EST)
- References: <bv2fq7$58$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Condition is listed in the Master Index (the symbols are after the A-Z
sections) as
! at #...
/;
Bob Hanlon
In article <bv2fq7$58$1 at smc.vnet.net>, Harold.Noffke at wpafb.af.mil (Harold
Noffke) wrote:
<< 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.