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Re: How to use package without manually evaluating?
Jeremy, The way that I would do it is: 1) Create a MyApplication (or whatever name you wish) folder in your $UserBaseDirectory/Applications folder. 2) Make your posted file a Matrices.nb notebook file. Make each of the cells an Initialization cell. 3) Change the BeginPackage statement to: BeginPackage["MyApplication`Matrices`"] 4) Save the notebook as an "Auto Generated Package" in your MyApplications folder. (If it already exists as a notebook you can use the Options Inspector to do this.) This automatically creates the Matrices.m file and anytime you edit and save the Matrices.nb notebook, the Matrices.m package file will be updated. 5) Load the package with the statement: Needs["MyApplication`Matrices`"] You could make that statement an Initialization cell in your working notebooks. But when you save those notebooks DON'T make them Auto Generated Packages. Generally your private Applications folder is the best place to put packages. Mathematica automatically knows how to find them there. You may not want this package loaded EVERY time you use Mathematica. I haven't examined you package code completely but it seems that you have written some routines that don't have usage statements. You need a usage statement for each routine you want to export and have access to. David Park djmpark at comcast.net <http://home.comcast.net/~djmpark> http://home.comcast.net/~djmpark