7
votes
2answers
892 views

Support for pro font families?

While researching this question, I encountered an issue with Mathematica’s font selection mechanism when rich families of pro fonts are used. I can plot text in a given font with: ...
6
votes
2answers
218 views

Where is the “Function Navigator” and “Virtual Book” gone?

Under V9 "Help" was a Item each for "Function Navigator" and "Virtual Book" to find and one could work with it. Under V10 these Helpers are gone. Although under Documentation/English/System the ...
4
votes
1answer
88 views

Converting structured data to a dataset

A Dataset seems perfect to represent structured data. Has anyone already thought about how to convert as efficiently/elegantly as possible an XML or JSON file to a Dataset in Mathematica 10 ?
0
votes
0answers
28 views

Set min and max ranges for axes in ParametricPlot

I'm having trouble with this one plot I'm trying to make. I'm using NDSolve on a system of differential equations and when I plot it with ParametricPlot, the scales or lengths of the graphs axes come ...
5
votes
1answer
82 views

Converting hierarchies of rules to associations

The impossibility of MatchQ-ing inside and Association MatchQ-ing Associations (MMA 10) explains a problem I have. I would like ...
0
votes
0answers
41 views

Approximate a function of four variables with a rational polynomial

I have a function that consists of four variables. Currently, I want to view it as function of one variable over the interval (0, 1) with the other three variables as parameters. I will plug values ...
1
vote
0answers
35 views

xCoba: evaluate tensor quantities, given an explicit metric

I am new to xAct packages and I'm having some problems to compute tensor quantities with xCoba. I defined a manifold and a metric. I computed All quantities of ...
0
votes
0answers
34 views

Is it possible to build/simulate/extract data from a System Modeler model completely inside a notebook using the MathModelica language syntax?

See examples in: http://www.mathematica-journal.com/issue/v10i1/contents/MathModelicaPaper/MathModelicaPaper_2.html It seems to be ruled out by the statement (Chapter 2 intro): "The subset of the ...
2
votes
0answers
44 views

Mathlink program with low cpu usage on linux machines only

Question I am incorporating some c++ code via Mathlink into my simulations in Mathematica. My questions involves the execution efficiency of the c++ code on different machines. For example, on my ...
0
votes
2answers
42 views

Defining a function from a list [on hold]

I have a list of 49 numbers, and I would like to define a function f such that f(n) is simply the nth number in the list. How can I do this?
3
votes
0answers
82 views

Mathematica 10 : Where is the Mathematica Book? [duplicate]

The question is simple. In Mathematica 9, there used to be "The Mathematica Book" integrated with the software in the help system. I can't find it anymore in version 10. Do you know if it is still ...
0
votes
0answers
61 views

FindMinimum slower in MMA10

I've recently updated one of my PCs (both have the exact same build) to Mathematica 10. After running the exact same notebook (which has two FindMinimum calls) on ...
1
vote
0answers
50 views

Why does Mathematica not go to specified order in series?

For some reason Mathematica will not evaluate this asymptotic series to the requested order. Inputting: ...
0
votes
1answer
38 views

Why my if statement does not work [on hold]

Thanks for your attention. I'm new to mathematica. I have the codes as below. But the If statement does not work. Anything wrong with my code? Thanks for help! Ben ...
2
votes
0answers
56 views

Is there a way to use video codecs for avi files in Mathematica?

I would like to use Mathematica to create compressed .avi video files from image sequences. I read the documentation on .avi but couldn't find a solution. In the documentation it says: ...
1
vote
1answer
61 views

How to solve an operator form of an integral equation by iteration method?

How I can obtain the $n^{th}$ approximation of the following Operator form integral equation? $F(t)=A(t)+\int_0^tds B(s)F(s)$, where $A(t)=\bigg{(}\begin{matrix}t&0\\Cos(t)&1 ...
0
votes
1answer
24 views
0
votes
0answers
62 views

Problems with NMinimize

I have written some functions that take a matrix and find its minimum inner product with a specific set of vectors ...
7
votes
1answer
73 views

Expanding derivatives of hypergeometric functions

Sometimes Mathematica expresses results of integration or summation in terms of symbolic derivatives of Hypergeometric2F1 function, and cannot further simplify ...
0
votes
0answers
25 views

Problem with Flatten [on hold]

I am calculating the metric tensor and its components.I have a metric of 6 X 6 dimensional matrix that contains terms like 1/z^6 ...
-2
votes
0answers
34 views

Random Packing and moving sphere [on hold]

http://www.youtube.com/watch?v=usu7OZiCvlg http://www.youtube.com/watch?v=oz8kT1Ii278 I want to simulate concrete. Does any can use matnematica to simulate filling a cubic zone with spheres like ...
0
votes
3answers
65 views

How to draw a plane parallel to one of the coordinate planes? [on hold]

Sorry for the fact that I ask actually the same question on three different stackexchange sites (stackoverflow, mathematics and now here), but I need to find an answer to my problem as quickly as ...
0
votes
1answer
44 views

Mapping with Trace[] [duplicate]

As part of some data anaylsis, I am using the function Trace to give me the name of an array of data, which I then use to label my plots. eg. my data array is called r1 so I run: ...
0
votes
1answer
67 views

Contourplot of complex Roots

Suppose I have this equation: $$ z^2 + 3z + (x^2 + y^2) = 0 $$ I want the real and complex contour plot of $z(x,y)$. Analytically, the real/imaginary boundary is separated by condition $x^2 + y^2 ...
2
votes
0answers
33 views

Session logging of “\$Echo” and “\$Output” in Mathematica 10

I have difficulties with session logging and Mathematica 10. In previous versions, you could simply use AppendTo[$Echo, logfile] and ...
0
votes
0answers
90 views

What does this code mean [on hold]

Can someone give me an explanation on what does [pc] mean? Here pc is equal to {1,0,0}. ...
0
votes
1answer
31 views

Replace all instances of Integrate by NIntegrate and add a Method option

I have an analytic expression which involves several integrals Integrate[f[x], {x, lb, ub}] where the functions f and bounds ...
3
votes
1answer
45 views

Manipulate inside a function definition slows down when passed a large data set

I'm working with large data sets (>1gb) which I'm visualizing with Manipulate[]. The following example works fine for me with no additional memory overhead: ...
3
votes
0answers
48 views

InputAliases and SelectionPlaceholder issue in V10

Let's create an example and do the test: ...
1
vote
0answers
47 views

How to make Mathematica script executable? [on hold]

I have the following Mathematica script ...
1
vote
1answer
66 views

Incompatibility of Row and TeXForm

In Mathematica 7 Row and TeXForm work harmoniously: ...
2
votes
1answer
116 views

Covariant derivative for symbolic tensors

I want to define a "prefix" (D_i) covariant derivative operator CD[] for symbolic tensors in form of a function, i.e. for ...
3
votes
1answer
52 views

Finding linearly independent combination of vectors with a certain symmetry property

I have two linearly independent vectors $v_1$ and $v_2$. Is there a way for me using Mathematica to find two linear combinations $w_1$ and $w_2$ such that: $w_1$ and $w_2$ are linearly independent. ...
0
votes
0answers
20 views

Discrete Fourier Normalization

I have a problem using the Fourier command applied to the square of an exponential function. I would like to compare the theoretical result (called ...
0
votes
0answers
69 views

Generate particals in a cube zone: Need code optimizion [on hold]

Problem description: Generation different sizes of particals in a cubic zone, of course, that particals must throw one by one in the zone and cannot intersect each other; the particals' coordinates ...
11
votes
1answer
140 views

MatchQ-ing Associations (MMA 10)

Consider {x->1} which has FullForm List[Rule[x, 1]] and, therefore, ...
3
votes
2answers
129 views

Conversion of 3D plot to 2D Contour Plot

Is it possible for Mathematica to convert a 3D plot into a 2D contour plot without having to recompute the values for each point? I realize that looking directly down at the 3D plot will be similar to ...
1
vote
1answer
48 views

Finding a root of a parameterized integral

I have a function given as a parameterized definite integral: f[a_] := Integrate[BesselJ[0, x - a] BesselJ[0, x + a], {x, -∞, ∞}] I suspect it has a root near ...
2
votes
1answer
100 views

How to generate nonperiodic tilings?

I need to generate nonperiodic tilings which are similar to the attached figure (kite-domino tiling). I was thinking the code is similar to the code for the Penrose tiling. However, that code is too ...
3
votes
2answers
45 views

Recognizing special cases of a defined function for permuted arguments

I have a number of ugly ways to implement the following pattern recognition task, but I'm looking for something elegant to keep my notebook tidy. I need to define a function of six variables ...
4
votes
0answers
39 views

Bug in TreeForm: “Plot” formatted as True

I believe I have come across a rather curious bug in TreeForm: {"foo", "bar", "Plot"} // TreeForm Note that the string ...
6
votes
2answers
85 views

Can't get Append to append a record (association) to a dataset

The Documentation Center item, Computation with Structured Datasets, implies that Append has been extended in V10 to work with datasets. But not on my computer. (I ...
0
votes
0answers
4 views

Cardinality of the set of all functions on R [migrated]

What is the cardinality of the set of all function on R?
0
votes
3answers
254 views

Solving an Integral Numerically

I have been trying to solve the integral equation below, but cant seem to find a way out of this. Can someone please help me out with suggestion? $f(t)=\int_0^{\infty}\frac{K_1a(t)}{a(t)+K_2}\,dt$ ...
2
votes
1answer
68 views

How to program a clickPanel for chemical elements (like a periodic table)?

The command ColorData["Atoms", "Panel"] indicates RGBColors of "Atoms" by clicking a panel. As I don't want to reinvent the wheel, I asked myself: How to ...
15
votes
2answers
232 views

Error changing Dataset using Part

In the new guide Computation With Structured Datasets we can find this part, on how to change a Dataset But if we create a Dataset like: ...
2
votes
1answer
84 views

How to input and output partitioned matrices that show partitions and compute as normal?

I want to demonstrate multiplication of partitioned matrices as in the example here. Using the Insert Menu, you can build a matrix and draw lines between rows and columns. However, I want to be able ...
1
vote
1answer
117 views

GUI of a Karnaugh Map

I intend to implement a three-variables Karnaugh map with the following code. There are two points I failed to figure out. How to remove the outer double-line border? How to change the toggling into ...
4
votes
0answers
54 views

Possible bug: SparseArray Part assignment loses default value?

This sure looks like a bug to me (Mathematica 10.0.0, MacOS): ...

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