Re: Options for my own Packages?
- To: mathgroup at smc.vnet.net
- Subject: [mg44243] Re: Options for my own Packages?
- From: poujadej at yahoo.fr (Jean-Claude Poujade)
- Date: Fri, 31 Oct 2003 03:01:08 -0500 (EST)
- References: <bnlidb$p92$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
"Steven T. Hatton" <hattons at globalsymmetry.com> wrote in message news:<bnlidb$p92$1 at smc.vnet.net>...
> Can I create and use options in my own packages? I've seen comments in the
> help documentation that say "built-in functions" have options. Here's an
> example of what I want. I created a class called curveGrid, which has data
> and methods for generating a coordinate grid defined by a mapping function
> passed to the constructor. I would like to be able to set an option that
> changed the default color of all instances of this class.
>
> Is there a way to accomplish this so that I can do something like
> SetOptions[curveGrid,name->value, name2->value2...]?
Here is an example after the book "Programming in Mathematica" by Roman Maeder:
In[1]:= Options[f] = {Opt1 -> True, Opt2 -> True};
f[n_, opts___Rule]:=
Module[{opt1, opt2},
opt1 = Opt1 /. {opts} /. Options[g];
opt2 = Opt2 /. {opts} /. Options[g];
{n,opt1,opt2}
];
f[1]
Out[1]={1,True,True}
In[2]:= f[1, Opt2 -> False]
Out[2]={1,True,False}
hth
---
jcp