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

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7
votes
2answers
140 views
9
votes
2answers
129 views

Coding practice Notebooks vs. Packages: ClearAll?

I have a pretty robust workflow for developing in Notebooks. One element of that workflow is the reflexive habit of saying ClearAll just before a definition so ...
9
votes
2answers
207 views

How to define UpValues in a different context from within a package

I'm trying to create a function (in a package) to import a lot of data and create a symbol with UpValues to return specific results about the data. I've got it working fine in a regular notebook, but ...
4
votes
2answers
170 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 ...
1
vote
0answers
52 views

Sum of zeros in finite Galois field

In the following code: << FiniteFields` GF[2][{0}] + GF[2][{0}] == GF[2][{0}] GF[2][{0}] + GF[2][{0}] + GF[2][{0}] == GF[2][{0}] Why does the second line ...
12
votes
2answers
645 views

FiniteFields package is very slow. Any fast substitute for Mathematica?

I want to compute the inverse of matrix, say with dimensions $100 \times 100$, defined over a large finite field extension such as $GF(2^{120})$. I am using the package FiniteFields, but Mathematica's ...
4
votes
1answer
167 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; ...
3
votes
0answers
38 views

Cross referencing symbols in different packages [duplicate]

I have problems with name space shadowing which I do not know how to resolve. I have two packages which depend on each other. Here is example of two files fooPackage.m: ...
5
votes
1answer
151 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 ...
12
votes
2answers
284 views

Is there a bug in AssociatePairs?

Bug introduced in 10.0 and fixed in 10.1.0 In Version 10, the GeneralUtilities package contain some useful functions. ...
21
votes
3answers
1k views

How to program a F::argx message?

How useful is it to program a user-built function in a package to produce a red warning message F::argx if you give the wrong number of arguments to that function? ...
4
votes
1answer
158 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 ...
2
votes
1answer
199 views

Needs cannot open a package

I have a package and notebook in the same directory, but Needs is throwing an error "Cannot open EField.m". I have tried several variations of this. I am ...
0
votes
0answers
29 views

How can I avoid to define public all methods in a package [duplicate]

If I have to code a Package and these package use a lot of functions and variables. In spite of, using in every call of function or variable with namePackage ...
5
votes
1answer
89 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
106 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: ...
0
votes
1answer
120 views

Solve seems broken after I installed the package Tomatlab.m

After I downloaded the Mathematica package ToMatlab.m, Solve does not work as before: ...
29
votes
1answer
787 views

Proving the hairy ball theorem using xAct

I would like to formally prove the hairy ball theorem in Mathematica, initially just for $S^2$, and then see about generalizing. An approach I thought about to use the xAct package to define $S^2$ ...
6
votes
0answers
162 views

Where is f2mma.zip, Fortran to Mathematica converter?

I want to convert the SOFA libraries to Mathematica, and found out about f2mma, a Fortran to Mathematica converter. Google points to many papers about f2mma, but the only link to the software ...
2
votes
1answer
115 views

AutoGeneratedPackage Formatting

If you do Ctrl+Shift+o you open an option inspector. And then you can enable ...
2
votes
2answers
110 views

Partial reload of definitions from package

In order to keep my code modular, I have defined some functions in "Foo.wl" file, which I source with Needs["Foo`"]. When I modify a single function in Foo, I quit ...
2
votes
1answer
61 views

Missing definition of some parts of function?

I have: BeginPackage["Test1`"]; ClearAll[f]; f::usage = ""; Begin["`Private`"]; f[x_AA]:= 1; f[x_BB]:= 2; End[]; EndPackage[]; When later, on a notebook, after ...
1
vote
0answers
117 views

EquationTrekker PropertyValue errors

In Mathematica 10.0.2, the basic example for EquationTrekker in the documentation is: ...
10
votes
1answer
206 views

What's the goal of the Macros` package?

I see in the Mathematica install a Macros` package. In windows the paths is for example: ...
4
votes
0answers
49 views

Odd behavior of FindFile

Running FindFile gives some odd results on my machine: FindFile["HTTPClient`"] Result: ...
1
vote
0answers
101 views

Calling a custom function in slave kernel process connected through mathlink [closed]

I am performing a small experiment to check if we can call/execute a custom package function in slave kernel launched from master using mathLink. I have created a dummy application called "...
1
vote
1answer
61 views

Package Function Confusion

I am a freshman working with Mathematica. I have written a package with a function like this: ...
4
votes
1answer
220 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 ...
0
votes
1answer
77 views

How can I use private variables in different ways

How can I use some private variables/symbols in another sub contexts in different ways. Note: Please do not use code Cell Style for testing the codes. ...
4
votes
0answers
52 views

Wrong autogenerated package from notebook containing #key and Part as subscript

Bug introduced in 10.0.0 and persisting through 10.1.0 or later Mathematica v10.1.0, under Windows 8.1 x64 Mathematica v10.0.2, under Windows 1) Define a function in an initialization cell: <...
0
votes
0answers
61 views

Atlas 2 For Mathematica. Need to calculate Riemann tensor, etc [duplicate]

Is anyone familiar with Atlas 2 for Mathematica to calculate the Riemann Tensor, Ricci Tensor, and scalar I have a metric that I need to calculate these things for. Can anyone help? I'm not too up on ...
8
votes
1answer
118 views

Maximum number of literal values for SetDelayed?

Under what circumstances should I expect Mathematica to turn a delayed assignment into an immediate assignment? I have put together a minimal example (available here) which demonstrates this behavior. ...
5
votes
2answers
340 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 ...
15
votes
1answer
318 views

How to get the directory of a package?

I have a package that I have placed in the $BaseDirectory\Applications directory so that Needs can find it. I have a logo in ...
3
votes
1answer
266 views

Package autoloading not working in CDF and Player Pro

I have made a package BeginPackage["top`"] t[x_]:=MessageDialog["This is top"] t1[x_]:=MessageDialog["This is top1"] EndPackage[] and used the code of this ...
6
votes
2answers
85 views

SetSystemOptions in a package

I'm looking to update a large package (with subpackage files called in the same context) to be compatible with version 10. A lot of the functionality surrounds plotting, particularly some custom ...
4
votes
0answers
69 views

Variable not assigned to correct Context [duplicate]

I am trying to understand Mathematica's Context, but I do not understand why the short name of the variable defined in the temp` context (x) returns the Global definition. I am following the section ...
3
votes
0answers
111 views

Automatic AutoIndent while editing a Package (.wl)

The author of this question is interested to personally handle the code indentation and have the package editor, built-in in Mathematica 2012, preserve the manually chosen indentation level from line ...
6
votes
2answers
287 views

How do I correctly embed VerificationTests in my packages?

I like to write my tests before I code and write them inline when developing a package, and when loading a package those VerificationTests should run and the load should fail and print a report if ...
11
votes
2answers
133 views

Package automated way of ReadProtecting all symbols

My template for building packages has, at the end, the following expression that automatically ReadProtects all symbols defined in my ...
1
vote
1answer
186 views

Load a package and use it's functionality inside C#

I am trying to make a windows C# form which uses some functions that I wrote inside Mathematica. Suppose that we have the following package: ...
2
votes
1answer
90 views

How to package a function for export?

I often post code for functions on Stack-Exchange, and then later find that they are unexecutable - that people can't use them because I mistakenly omitted some private functions or values that are ...
4
votes
3answers
161 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 ...
3
votes
1answer
119 views
1
vote
1answer
66 views

Simplifying a product with indices by implementing a rule

I want to simplify a product of two operators including indices. Let's say my operators are $$ \mathcal{O}^{\mu \nu, \alpha \beta} = -p^2 \left( \eta^{\mu \alpha}\eta^{\nu \beta} + \eta^{\mu \beta} \...
18
votes
1answer
1k views

What is available for editing Mathematica source code with Emacs?

I can find several Emacs libraries for Mathematica, but I'm not aware of a clear favourite, a definitive list, or of a library which is actively maintained and developed. None of these appear to be in ...
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 ...
1
vote
0answers
56 views

Mysterious message posted when I move the cursor in a custom function

I wrote a function called CPlot for complex plotting which is supposed to act a lot like Plot in its input format, but ever ...
1
vote
0answers
85 views

Autoloading attempting to follow Roman Maeder's master package instructions

I am trying to use the Master Packages discussion from "Programming in Mathematica" by Roman Maeder. I have a directory: D:\at_work\mathematica\JacksPackages ...
1
vote
1answer
72 views

Using underscore in directory names and loading packages

Using an underscore with the SetDirectory command works fine. SetDirectory["D:\\at_work\\mathematica\\programming_maeder"] Now I can load a package using Get["...