Questions on Mathematica packages, which are self-contained bundles of Mathematica code that add new functions and other functionality.

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6
votes
0answers
140 views

Package for voting systems

Is there a mathematica package that implements common voting systems (like IRV where voters will rank the candidates)?
5
votes
2answers
442 views

Simplifying the trace of a matrix expression

I have a long expression involving matrices that I derived using the NCAlgebra package. Can I simplify the trace of the expression? For example, say b is a scalar (...
5
votes
2answers
241 views

Loading custom notation on startup without showing the Notation palette

I was creating some custom notations using the Notation package and it works fine. I put it in my default personal package, and it loads fine on Mathematica's startup. To make it complete I need just ...
5
votes
2answers
288 views

Evaluate notebook from other notebook

I have a notebook ("notebook 1") which in the beginning sets some parameters, does something depending on their value and saves the result to a file, say: ...
5
votes
1answer
145 views

Working example for the built-in SavitzkyGolayMatrix for doing polynominal smoothing

Have been using various packages SavitskyGolay.m for Savitsky-Golay polynomial smoothing but just noticed the built-in matrix kernel. I am looking for an example ...
5
votes
1answer
225 views

Reloading package after accidental Remove[] of symbol

I was using Needs["PlotLegends"] By chance I removed ShowLegend by Remove[ShowLegend] How do ...
5
votes
1answer
196 views

How to write polynomial expression as commutator form?

I want to write some polynomial expressions as commutator form. For example : $$ \frac{\text{BA}}{2}-\frac{\text{AB}}{2} = -\frac{1}{2}[A,B] $$ or $$ \frac{\text{AAB}}{6}-\frac{\text{ABA}}{3}-\frac{\...
5
votes
3answers
102 views

How can I pass replacement rules to a package-defined function and have it understand their context?

I am writing a package where I would like to be able to pass replacement rules to a function inside the package and have the function manipulate its symbols using those replacement rules. However, I'm ...
5
votes
2answers
153 views

Listing all usage messages from a loaded package

I am writing several packages in collaboration with others. In order to help the group use my packages, I want to provide them with a simple reference of function names and usage messages. How can I ...
5
votes
1answer
514 views

How to make a filled Ellipsoid?

I want to make a filled Ellipsoid, but it seems Filling options doesn't work in Graphics ...
5
votes
1answer
104 views

Naming conflicts with Dummy variables in several packages conflicts

I'm using several packages in a notebook. In each packages there is functions defined with dummy variables. When I load the several packages in my session, i've got a warning message: ...
5
votes
1answer
108 views

Same name for functions in package and Global context

I am using a package that was written for Mathematica 3 while I am now working on Mathematica 8. I have issues with 2 functions in particular, Order and GraphComplement. They are a part of this ...
5
votes
1answer
692 views

How to use MathPSfrag package in Mathematica 10?

I am interested to use LaTeX like labels in the plots that I prepare in Mathematica, and hence, I downloaded the MathPSfrag package from this website http://wwwth.mpp.mpg.de/members/jgrosse/mathpsfrag/...
5
votes
1answer
502 views

Linearized Einstein Equations with Mathematica

I need to compute the linearised Einstein Equations around a fixed metric $g_{\mu \nu}$ which is not the flat metric. Someone knows any Mathematica package or a review that can help me?
5
votes
2answers
185 views

Function behaves differently inside a package than outside

I defined a function TestHead in a notebook as follows: TestHead[z___] := TrueQ[{z} == Cases[{z}, x_ /; Head[x] === avar]] to ...
5
votes
2answers
96 views

Strange behaviour of order of execution or bug?

In[1] and In[3] are identical but the output is different.
5
votes
2answers
855 views

Package for representation of groups (group theory)

I wanted to know if there is a package which allows to compute representations of a group like the definition representation, adjoint and so on (for example the Pauli matrix for $SU(2)$ if I specify ...
5
votes
1answer
114 views

Error When Creating Package

I am trying to make my own package based on the code from this Question. The following is the code from that page: ...
5
votes
1answer
169 views

Where does a package have to be loaded?

I'm trying to solve a very tricky bug in my program. It's tricky because it seems to be not working intermittently, and mostly not working when running with large data sets. The code itself is kind of ...
5
votes
1answer
88 views

Shadowing of optional function arguments?

I am trying to define two different packages that process some information in a different way. These packages have functions into them with optional arguments. The names of the optional arguments ...
5
votes
1answer
60 views

Prevent autocompletion for symbols in contexts other than “`Private`”

I've been working on a Mathematica package (call it QuantumDot) that has become huge. Right now, all the back-end helper functions are in context ...
5
votes
2answers
91 views

Annotation specifier like :Author: and sectioning like ::Section:: in package code

In packages, there is a special way to make basic formatting and annotation within normal comments. Here is another question related to annotation. Package file headers usually contain information ...
5
votes
1answer
142 views

Run encoded package code through .NET/Link?

An earlier question of mine, Prevent package from being opened in a notebook interface, never received an answer, but Albert Retey's comments did lead me to an entirely different solution. To secure ...
5
votes
1answer
309 views

VariationalD giving the wrong solution?

EDIT: As pointed out in the comments, VariationalD gives a variational derivative (which I don't want), not a derivative with respect to a function (i.e. $\frac{df[...
5
votes
2answers
320 views

Package Loading: How to get rid of Needs::nocont?

I am trying to create a documentated application inside FileNameJoin[{$UserBaseDirectory, "Applications"}] I obviously dont fully understand the concept of the ...
5
votes
1answer
211 views

Should I end all definitions from packages with semicolon?

I noticed that if I open a .m file in Mathematica and click on the Run Package button, all the ...
5
votes
1answer
307 views

How to transform a DumpSaved .mx file to .m file conveniently?

I have many DumpSave-d .mx files under a directory. They are generated under Linux. The .mx ...
5
votes
0answers
336 views

Computing Ehrhart's polynomial for a convex polytope

Is there a Mathematica implementation for computing the Ehrhart polynomial of a convex polytope which is specified either by its vertices or by a set of inequalities? I am interested in knowing this ...
5
votes
0answers
232 views

Does Mathematica support collaborative filtering and recommendation systems?

Does Mathematica support collaborative filtering and recommendation systems such as can be found in Apache Mahout? I could not find any resources about advanced data mining techniques, beyond ...
5
votes
0answers
161 views

Why does $Path change when I examine it in new cell after I just changed it? [closed]

This is really driving me crazy. In one cell, I change $Path by removing from it un-needed paths that I do not want for the duration of a computation I will be ...
4
votes
1answer
350 views

Errors when using ParallelTable inside a package

I'm developing a package that contains a function that requires evaluation of an expensive Table, so I use ParallelTable instead....
4
votes
2answers
289 views

How can Private functions be made completely opaque?

I want to make Private functions. From my point of view, being a Private function means that the function is not accessible from other packages. For that purpose I wrote the following code. But my ...
4
votes
1answer
120 views

How can I temporarily suspend the Combinatorica package?

Sometimes after I load the Combinatorica package by entering Needs["Combinatorica`"], I need to use Mathematica for something like: ...
4
votes
1answer
215 views

Where do I find the ODE.m package of the Book “Scientific Computing with Mathematica®” by Marasco and Romano?

I downloaded this book at SpringerLink. It should contain a CD-ROM with notebook-files (i.e. ODE.m) but there is no download available. Particularly I am interested in a Mathematica package which ...
4
votes
3answers
158 views

Testing a package in Mathematica 9

I am in the process of writing a package, but my way of testing it just seems wrong and inefficient. Each time I edit the .m file, I save it, quit the kernel, call the package in a separate notebook ...
4
votes
2answers
105 views

How to put replacement rules into a package

I have a replacement rules list, but its quite long and therefore I would like to make a standalone package of it. I tried but haven't succeeded. A simple example of my approach is ...
4
votes
1answer
180 views

EquationTrekker using Mathematica 10.2

I wonder whether the problem that arise with the following code is specific to my machine, as it seem to work with the documentation example. ...
4
votes
2answers
166 views

Use of Ito's lemma in ItosLemma.m (or any other method in Mathematica)

This is a follow-up question on this question: Use of Ito's lemma in ItoProcess My problem is to find some method how to use Ito's lemma in Mathematica. As an example: How can I apply Ito's ...
4
votes
2answers
128 views

Can I view a package as a regular notebook?

How can I open a package as a normal notebook, i.e. without the toolbars and formatting of the built-in .m file interface.
4
votes
1answer
364 views

Using the variable in the MATLAB workspace using MATLink or any other packages

I have a program in MATLAB and after I run the program, I get some results in MATLAB's workspace. Now, I need to use these results in Mathematica. What I currently do is that I save the workspace as a ...
4
votes
1answer
1k views

FeynCalc “May shadow or be shadowed by other definitions”

So I've downloaded the latest FeynCalc from this site and put the extracted folder in user/me/library/Mathematica/application, but when I write the command ...
4
votes
1answer
111 views

User defined packages don't load with $\mathtt{Needs}$ or $\mathtt{Get}$

As an introduction to packages in Mathematica I'm following this short guide by Leonid Shifrin, and tried using the sample package provided in that answer. However, both ...
4
votes
1answer
162 views

What is the difference between Update, Run Package, Save and Install for packages?

I am building a package, using Mathematica 10.0.2.0. I notice in the displayed window for the package there are buttons labeled Update and Run Package; on the File menu, there is an item for Save; ...
4
votes
2answers
411 views

How to use SuperLog by loading SMLE.m

I am researching a software reliability model that has many parameters that need to be estimated. I want to use a maximum likelihood estimator (MLE) to estimate those parameters. After I searched ...
4
votes
2answers
450 views

Function saved in a package won't load in the deployed CDF on startup

I wrote a function and saved it in a package. I saved a copy of the package in the Autoload folder too. I deployed a CDF that contains this function. When I open the CDF later, this function (which ...
4
votes
1answer
267 views

Namespaces in Mathematica

In many programming languages one can define a namespace with namespace abc How can the similar be done in Mathematica? The ...
4
votes
1answer
68 views

Error retrieving information of a package function [duplicate]

Bug introduced in 10.4 I´m using a self written package with SortingUtilities when dealing with sorting algorithms. I use this package for more than a year or so. No I want to retrieve information ...
4
votes
1answer
157 views

Can I do constraint programming in Mathematica? [closed]

I would like to know if there is a way to do constraint programming in Mathematica? I think there are no built-in functions, but maybe some of you know some additional packages addressed to the ...
4
votes
2answers
151 views

how to load packages on local computer when using remote kernels

I usually works remotely using kernels on our hpc and front-end on my local laptop. This enable me do relatively large computation within my laptop(IP address of my laptop may change frequently). But ...
4
votes
1answer
131 views

Change Notebook's Default Context

In my workflow, when testing/developing packages, It's an common situation to test internal packages functions that has been already loaded with the package, so they are in the ...