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Re: Package writing
 To: mathgroup at smc.vnet.net
 Subject: [mg67233] Re: Package writing
 From: "JensPeer Kuska" <kuska at informatik.unileipzig.de>
 Date: Wed, 14 Jun 2006 06:28:34 0400 (EDT)
 Organization: Uni Leipzig
 References: <e6lhqr$nfs$1@smc.vnet.net>
 Sender: ownerwrimathgroup at wolfram.com
Hi,
only one question .. *you* *changed* the *name* ??
You package define a context and this context it
translated into
a directory/filename, i.e.
something like
BeginPackage["This`Is`My`Package`"]
EndPackage[]
is searched as (somewhere
$Path)/This/Is/My/Package.m
There is a function ContextToFileName[] that does
the
translation. If you load a package that is found
but it
does not create the correct context you should get
atleast a warning. So you can't
"I chnaged the name of that file to DD.m"
So
a) What it the file name of the notebook ?
b) What is the context of the package ?
Regards
Jens
"marek" <MarekBr at gmail.com> schrieb im Newsbeitrag
news:e6lhqr$nfs$1 at smc.vnet.net...
 Hello All
 I have the following problem. I used Template.nb
to create a package.
 During the whole process I had some problems
trying to get it to work
 although the same commands in a different
(fresh/new notebook) produced
 desired results. Right now the sutuation is as
follows. I can use my
 poackage if I load it into any notebook but it
does not work in the
 original notebook I used to write it. I have
that notebook and the
 associated m file in
/home/marek/Mathematica/Packages. Here are first 4
 command I execute in the original notebook
 1.
SetDirectory["/home/marek/Mathematica/Packages"]
 This sets my working directory to the directory
in which my package is
 located.
 2. AppendTo[$Path,
"/home/marek/Mathematica/Packages"];
 Here I append this very same directory to my
search path so that I can
 load that package in the same notebook for
testing purposes.
 3. Needs["DataAnalysis`"]
 This line loads that package. When I execute
that line I get no
 complaints form Mathematica that it cannot open
something or anything
 like that
 After those there is a bunch of cells with the
implementation of my
 ppackage all of which are set to be an
Initialization cells.
 After them I have few cells which are using
functions from my package
 but they do not work. The symbols/functions
defined in that package
 seems to be recognized because Ctrl=k
combination does the
 autocomplition but nothing happens when I
execute a cell with a funcion
 defined in my package.
 On the other hand I can copy my package to
 /home/marek/.Mathematica/AutoLoad directory (and
I do it changing the
 name of that m file) and it works fine from
there after I open new
 notebook and load it with Needs["DD`"] (I
chnaged the name of that file
 to DD.m)
 In a fresh notebook I can execute that AppendTo
command from above and
 then load my package from the original
development directory (it has
 different name there so I know that it is that
version which is being
 loaded not the one from
/home/marek/.Mathematica/AutoLoad) and it will
 work fine.
 So why I cannot use my package from the original
notebook I wrote it
 in?
 Any suggestiones greatly appreciated
 Marek

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