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Re: Mathematica newbie

• To: mathgroup at smc.vnet.net
• Subject: [mg72625] Re: Mathematica newbie
• From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
• Date: Fri, 12 Jan 2007 06:25:54 -0500 (EST)
• Organization: The Open University, Milton Keynes, UK
• References: <eo4not$mav$1@smc.vnet.net>

JP Azevedo wrote:
> Hello there,
> 
> 
> I'm new to Mathematica and I'm trying to run a notebook which uses a package
> called  Merger.m
> 
> 
> Although this notebook has worked fine a few days ago, today it started to
> give me an error message saying:
> 
> <<Merger`Merger`
> Get::noopen: Cannot open Merger`Merger`
> $Failed
> 
> 
> 
> Both files can be downloaded from the page:
> 
> http://www2.owen.vanderbilt.edu/luke.froeb/software/Default.htm
> 
> 
> Any help to solve this problem will be much appreciated.
> Cheers,
> JP

Hi JP,

A package, in this case the file called Merger.m, must be located in a 
directory within a path expected by Mathematica.

In[1]:=
$Version (* Just for info *)

Out[1]=
5.2 for Microsoft Windows (June 20, 2005)

Evaluate the following expression

In[2]:=
$UserAddOnsDirectory

Out[2]=
C:\Documents and Settings\Jean-Marc\Application Data\Mathematica

Now, with whatever method is available from your operating system, go to 
the above directory. You should see a directory called "Applications". 
Within it, create a new directory called "Merger", then copy the file 
Merger.m into it.

In Mathematica again, evaluate the following expressions

In[3]:=
Needs["Merger`Merger`"]

In[4]:=
?Merger

--> "This package defines functions  used to simulate mergers in 
differentiated and homogenous product industries. Available functions... 
<bla bla bla>"

At any rates, the following section of the online help is a must read:

http://documents.wolfram.com/mathematica/Add-onsLinks/WorkingWithAdd-ons/

HTH,
Jean-Marc