6
votes
1answer
2k views

Export Table from Mathematica into specific cells Excel

How can I export a table to Excel - to specific cells, e.g. D1-E2? Background: I want to compare results, and it's easier to have the results on one spreadsheet. I'm using Mathematica 6. This is my ...
6
votes
3answers
4k views

Mathematica function intersection points with 3D grid

I need to produce a 3-dimensional equispaced grid over a given function in a way, that I can calculate intersection points of the function with the grids edges. So my first question is how to produce ...
6
votes
1answer
2k views

Any way to prevent Mac firewall from asking to allow connections all the time?

Whenever I start Mathematica 8 on my Mac the built-in Mac OS firewall asks if I want to allow JLink to accept incoming connections. Then, during running, I'll get the same question about ...
6
votes
1answer
2k views

FeynArts not working properly

So I have installed all FeynArts folders (from 3.5 to 3.7) with FeynCalc 8.0.1., and none of it is working properly :\ First I load the path to specific FeynArts package (3.5 for instance), then, by: ...
6
votes
1answer
2k views

Is it possible to generate a Hasse Diagram for a defined relation?

I'm looking for a way to create a Hasse Diagram from a given partial order binary relation. The relation will be given explicitly, for example: ...
6
votes
2answers
562 views

How to overload System`StringJoin to automatically use ToString on arguments?

I am using an overloaded version of the StringJoin function since years now, without any problem, as I've invested a lot of time and effort earlier to make its ...
5
votes
1answer
85 views

How to convert arbitrary raw boxes directly into String?

This question is motivated by the recent question about searching inside of the NB files. According to the Documentation, ToString expects a high-level WL ...
5
votes
3answers
322 views

Histogram of a very large dataset?

I have a very large dataset stored in a file (over 2GB). The file contains a tab-separated table of floating-point numbers. I want to do an Histogram of all the numbers in the table. But if I try to ...
5
votes
4answers
238 views

How should I deal with messages being produced by my Manipulate?

I have made a knockoff of John Polking's dfield for a web-embedded CDF (via Enterprise Mathematica). My code extends that from Belisarius who last year showed me how to use ...
5
votes
1answer
97 views

Selecting the parallel kernels where tasks can be executed

When I use ParallelSubmit, is it possible to select on which kernel a task can possibly be executed? For example if have 3 parallel kernels, can I only use 2 of ...
5
votes
1answer
139 views

Inaccurate Heliocentric coordinates of PlanetaryMoonData

I have noticed that the heliocentric coordinates obtained with PlanetaryMoonData are very inaccurate. Fore example, consider the Galilean moons of Jupiter: ...
5
votes
1answer
149 views

Multidimensional arbitrary precision spline interpolation on the grid

This question is a generalization of the previous one for multiple dimensions. In the answer to that question an implementation for the clamped spline interpolation for 1D case and arbitrary degree of ...
5
votes
1answer
170 views

Ordered associations

Mathematica 10 has introduced Associations, elsewhere known as hash tables or dictionaries. Is there Ordered equivalent like in Python, Java, .NET? The data structure should remember the order in ...
5
votes
2answers
257 views

Implement functions that depend on previous value in NDSolve

I want to numerically solve a system of differential equations in Mathematica, say for example $\frac{dx}{dt} = f(x,y,t) \\ \frac{dy}{dt} = g(x,y,t)$ for $x(t), y(t)$. However, the functions depend ...
5
votes
4answers
310 views

HoldForm does not Hold Form for fractions sometimes

I'm facing a strange behavior of HoldForm. I need to display 1/2*3/4 in LaTeX like this : $$ \frac{1}{2} \times \frac{3}{4} $$ ...
5
votes
1answer
319 views

How can I Integrate large trigonometric expressions more efficiently?

I have a requirement to integrate some large symbolic expressions containing products of trigonometric functions. A single integration is averaging 7 minutes, and I have 2628 expressions to integrate, ...
5
votes
1answer
556 views

Why is there a huge performance gap using Map with more than 100 List entries

im using Map on a List like this: cube= {{1, 1, 1}, {1, 1, 2}, {1, 1, 3}, {1, 1, 4}, ... , {5, 5, 4}, {5, 5, 5}} Mapping the whole List with 125 entries takes ...
5
votes
1answer
114 views

Is it possible to Print into a collapsable CellGroup?

During rather long computation I have intermediate steps Printed with useful information which should be collected for possible use in future inside of the ...
5
votes
2answers
178 views

Capturing an F1

I teach an Intro to Mathematica course, and one of the things I try to reinforce early on is just how helpful Mathematica's help is. In the very first lab for the course, I even give the students a ...
5
votes
2answers
718 views

Labelling objects in a picture with numbers

I need help processing a biology bacteria picture. I just started learning Mathematica and I hope you guys can use a simple method to help me solve the problem, please do not use super complicated ...
5
votes
3answers
3k views

Make a differentiable smooth sawtooth waveform

So, I am trying to understand the effect of sawtooth waveform on a mechanical system model. For example, a system of a plate and a box on it. And then we try to oscillate the plate. In order to do ...
5
votes
1answer
452 views

ListPlot3D of a set of points in a non-convex region

I would like to plot a set of points in the same style as ListPlot3D does, but only in a non-convex region that I can specify (e.g. using a ...
5
votes
1answer
792 views

Is there anything like a C pointer (or returning a reference) in $Mathematica$?

I want to do in Mathematica what the following does in C. ...
5
votes
1answer
96 views

Possible to include additional styles in context menu?

I am using Mathematica 9 on Windows 8, and I regularly want to use cell styles such as Section, SubSection and so on. If I click the + button before creating a new ...
5
votes
1answer
326 views

Embedding StreamPlot in Graphics3D

I am trying to visualise the action of the infinitesimal generator of a Lie group on the solution of a 2-ODE system drawn in the 3D space (t,y1,y2): t is time and y1,y2 are the two dependent ...
5
votes
2answers
350 views

How to fold output cells by default?

In Mathematica the default behavior of output cells is to pop up after the kernel has processed the input cells and got a result. I know I could add ; in the end of ...
5
votes
1answer
1k views

How do you export the result of a RevolutionPlot3D to STL for printing?

How do you export the result of a RevolutionPlot3D to STL (STereoLithography) file format for printing? I am a tyro when it comes to 3D rendering and printing.
5
votes
2answers
1k views

What is the default ColorFunction for 3D plots?

This should be a really simple question, but it isn't in the documentation for some perverse reason. I like the default ColorFunction that Mathematica uses for ...
5
votes
3answers
668 views

Is Table the only functional way to construct nested loops in Mathematica?

Suppose you have a cubic box containing identical particles and you want to compute the distances between each particle and every other particle in the box without double-counting (i.e., if you've ...
5
votes
4answers
188 views

Performance: Collapsing repeated contiguous rows & cols from a matrix

In this answer I needed to remove contiguous zero-valued cols and rows from a matrix, leaving only two of them in place, no matter what the original number was. I made up this code: ...
5
votes
1answer
365 views

Getting all physical units with prefixes

How we can get the list with all physical units and prefixes from WolframAlpha and make symbols from the result to be equal their corresponding quantities like described in this post?
5
votes
3answers
416 views

Exporting a rasterized Row of Graphics

I'm running some code based on @R.M.'s answer to this question to create a couple plots side by side. I want to export the plots rasterized to a png. However, when I ...
5
votes
3answers
3k views

How can I scale tick marks without scaling my function?

Take this plot for instance: It shows power in W, but I'd like to see it in µW, so that I get 200, 400, 600,..., which is much more readable. Is there a way to do this without scaling my ...
4
votes
2answers
79 views

MatchQ failing in some cases with Hold [duplicate]

Could someone clarify why the first of these MatchQ finds a match whereas the second does not? (I'm using version 10.0, in case that matters.) ...
4
votes
1answer
168 views

Recognize physical constants?

Is there some way to ask Mathematica to recognize physical constants, such as 32 or 9.81 (gravitational acceleration, in different units, at Earth's surface)? I have in mind something like the ...
4
votes
3answers
187 views

How to read the intersect corodinate of two lines from the ListLinePlot?

Suppose I have two curves intersect at some point, how can I read the coordinates from the graph, not read by eye, but find it with more precision by computer. For example, here are two lists created ...
4
votes
2answers
388 views

A bug fix to mathematica 10.0.1.0

There is a bug in the Wolfram Symbolic Transfer Protocol Development in C (Windows). I described it in the next answer by myself, from which I summarize: One cannot successfully compile the ...
4
votes
2answers
620 views

Finding minimal distance between two surfaces

This code will display two parametric surfaces: ...
4
votes
2answers
506 views

Using compiled function inside NMinimize

Consider this code: ...
4
votes
1answer
878 views

Circular membrane vibration simulation

I'm new in Mathematica and I'm trying to simulate the vibration of a circular membrane for math project but I don't even know how to start. The wave equation describes the displacement of the ...
4
votes
1answer
547 views

How to dequantify units in mathematica?

Is there a function which applied to a quantity returns its numerical value so I for instance can fill it into my Predictorfunction?
4
votes
1answer
257 views

How to change the aspect ratio with drawing tool?

I'm drawing an image in editing an slide show with the drawing tools. But the aspect ratio of the created drawing seems fixed and not changeable with mouse dragging the border and corner as in other ...
4
votes
1answer
396 views

How to change front end setting “Parallel Kernel Configuration” in the code?

I'm trying to run Mathematica parallel on multiple nodes on a HPC, and I use the remote kernel tab in the "Parallel Kernel Configuration" settings to set the communication between different ...
4
votes
4answers
533 views

Listing matrices up to symmetry

I am interested in the equivalence relation on N x N binary matrices, in which two matrices are equivalent if one can be obtained by rotating/reflecting the other. I would like to obtain a list ...
4
votes
1answer
848 views

ItoProcess function

While looking in the help manual of Mathematica concerning the ItoProcess function I found the following: ItoProcess[{a,b,c},x,t]: represents an Ito Process y(t)=c(t,x(t)), where ...
4
votes
3answers
597 views

Summation with constraints

I am trying to do the summation shown below, $\sum_{i_1=0}^{imax_1} \sum_{i_2=0}^{imax_2} \dots \sum_{i_k=0}^{imax_k} f(i_1,\dots,i_k)$ $k$ is a variable. Therefore $i$ and $imax$ are defined as ...
4
votes
0answers
717 views

Analytically solve the eigenvalue problem with infinite dimensions by Mathematica?

If I am given a symbolic expression of all the matrix elements in an infinite-dimensional space, e.g., the Hamiltonian of a quantum mechanical system, is it possible to get the symbolic expression for ...
4
votes
2answers
1k views

Classifying poker hands by pattern matching

I am working on this question posed in a Mathematica course revised in 1998. Here are the instructions: Poker Hands You are to define and show working examples of a function "...
4
votes
2answers
287 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
3answers
2k views

How to fix BodePlot that comes with Mathematica?

I am using Mathematica to go through the examples and exercises on the book Modern Control Systems, 6th edition by Dorf. On page 605, there is a table (Table 8.5) with the Bode plot for several ...

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