6
votes
2answers
714 views

Slice through Graphics3D

is there any possibility to slice through a Graphics3D object? At the end I would like to have a stack of images slicing , e.g. $n$ times in $z$-direction: $((x,y,z_{0}), (x,y,z_{1}),…,(x,y,z_{n}))$ ...
0
votes
1answer
70 views

LMS distance from a point to an InterpolatingFunction

I have a short script to NDSolve a second-order nonlinear BVP, which as its output produces an InterpolatingFunction object. I ...
7
votes
1answer
686 views

Getting clearer StreamPlot output

When I do a StreamPlotof a rather complicated pair of differential equations, it loses some details. For example: ...
3
votes
1answer
190 views

Levels and slots

I am struggling with levels and #, if I understand this I think I will be able to grasp the entire concept. ...
1
vote
1answer
1k views

Direct sum of matrices [duplicate]

Is there a simple way (perhaps even a built-in function) that allows one to compute the direct sum of two square matrices?
25
votes
5answers
652 views

Compiling ColorFunction for faster complex phase-amplitude plots

I have gotten into the habit of plotting complex-valued functions on a plane using a color-function along the lines of ...
7
votes
1answer
184 views

Raise systemwide keypress event

Is there a way to raise system-wide "keypress" events programmatically from within Mathematica? Say "Ctrl+C" or "Ctrl+V", which all other programs can recognize? This is an attempt to gain simple ...
5
votes
1answer
235 views

Why is $ProcessorCount different than the selected number of cores in PBS?

By using ParallelTable and submitting my Mathematica code to a cluster, I noticed that it was enhancing the speed even when I selected a single core in a single ...
0
votes
0answers
194 views

System of integral equations with integrals on both sides

I'd like to solve the following equation numerically for $a_1$, $a_2$, $\alpha_1$ and $\alpha_2$: $\displaystyle\int_0^{\infty}\Big[L_1\Big(\frac{k^2}{2}\Big)\Big]^2e^{-k^2}L_m(k^2)\ dk=$ ...
0
votes
1answer
141 views

How can I replace UndirectedEdges to pairs of bi-directional DirectedEdge in a Graph?

How can I have pair of edges between nodes in this kind of graphs? ...
3
votes
1answer
530 views

Cartesian product of sets

I have two types of sets, one of them is a list of points of the form $\{t_{k}\}$ and the other one is an interval of the form $[a,b]$. And my custom set consists of these type of sets and I need to ...
5
votes
2answers
172 views

Set the style of a cell

I know it's possible to programmatically change options on the selection in a notebook. I'd like to create a button that lets me change the style of a cell. It's a style that doesn't have a keyboard ...
1
vote
1answer
338 views

Simplifying with noncommutative multiplication

I am trying to do some quantum algebra computations in Mathematica. Up to now I was able to make the noncommutative multiplication linear and to factorize powers. However, I still have some issues ...
11
votes
3answers
377 views

Find asymptotics of $\sum\limits_{i=0}^{n/3} 2^i \binom{n-i-1}{\frac{2n}{3}-1}$

I have an expression 2^n / Sum[ 2^i Binomial[ n - i - 1, 2n/3 - 1], { i, 0, n/3}] ...
1
vote
3answers
152 views

How to write equal subset

I have a unique set S={1,1,3,3,3} but from this unique set I can create many combinations like {1,3,3,3,1}, {3,3,1,3,1}, ... I ...
0
votes
0answers
39 views

Obtain the coordinates of a point by clicking on it [duplicate]

Is it possible to show the coordinates of a point in a plot by clicking on it ? For example you click on one point on the plot below and you get the point's coordinates.
4
votes
1answer
213 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 ...
13
votes
0answers
778 views

Using TetGen in Mathematica to get 3D Voronoi diagram

In this post, the use of TetGen for 3D Voronoi tesselation has been briefly discussed. However there is still no info about the use of TetGen to generate a 3D Voronoi diagram. The TetGen documentation ...
10
votes
2answers
367 views

Filling Fill incomplete in ListLinePlot

...
4
votes
0answers
89 views

JewishNewYear date limitation

The documentation for the function "JewishNewYear" in the "calendar" package declares that the year argument must be between 1900 and 2100. No explanation is given for this limitation. The function ...
8
votes
1answer
174 views

Quickly selecting for points in a set that are within a critical distance of points in another set

Imagine two lists of two-dimensional coordinates: listA = RandomReal[{0,100},{202,2}]; listB = RandomReal[{0,100},{97,2}]; I'm attempting to quickly generate a ...
15
votes
4answers
2k views

What is the most elegant way to display multiple graphs with a common title?

I often seek to display two graphs, side by side, with a common label over them. There is no option for adding a label to GraphicsRow, which means, I think, that I ...
3
votes
1answer
146 views

Use URLFetch in init.m

I'm not able to use URLFetch in my $UserBaseDirectory/Kernel/Init.m as it always returns ...
4
votes
2answers
255 views

CMYK colours changing

If I draw a coloured diagram like Graphics[{CMYKColor[0, 0.83, 1, 0], Rectangle[{0, 0}], CMYKColor[1, 0, 0, 0], Rectangle[{0.5, 0.5}]}] and select the red ...
4
votes
1answer
175 views

Can I compile a function containing ArcTanh?

Can I compile a function that contains ArcTanh[]? The following doesn't work Needs["CCodeGenerator`"] c = Compile[ {{x}}, ArcTanh[x]^2]; c[2.5] Mathematica gives ...
0
votes
0answers
47 views

Eigenvalues of a matrix, rhombus/hash sign [duplicate]

I wanted calculate the eigenvalues of A = {{0, 1, 0, 0}, {a, b, c, 0}, {0, 0, 0, 1}, {d, 0, e, f}} Then assigned the parameters a value ...
2
votes
1answer
208 views

Fraction Alignment in Plot Export to JPG [duplicate]

I've produced some plots that have fractional tick labels on the horizontal axis and they look fine. ...
0
votes
0answers
37 views

Custom FrameTicks not working [duplicate]

I would like to have a custom ticks on x-axis on my ListPlot, but nothing is showing, what am I doing wrong? ...
5
votes
1answer
279 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 ...
1
vote
1answer
203 views

Input text field GUI [duplicate]

Is there a way to input multiple rows of text and save it as a variable? Like an InputField, but with multiple rows? I would like to make a simple text redactor, so that I could enter a text and then ...
7
votes
2answers
178 views

Can I Print to a different notebook? (within the context of the same kernel)

Please imagine a simple loop: For[i=1,i<=100,i++, Print[i]; ]; We can ask Print[] to output $(1,2,3,4,...)$ to a ...
7
votes
1answer
110 views

Why does Rescale performance vary significantly based on the real number values in a list?

I have a list of the form: testList = Table[{Flatten[RandomReal[{-200, 200}, {1, 2}], 1], RandomReal[{-200, 200}, {69, 2}]}, {i, 1, 100}]; And I would like to ...
3
votes
2answers
129 views

Creating a trigger to update a previous ListPlot output with new data

Imagine I'm running a loop that's manipulating and changing elements in an array. Is it possible for me to create a ListPlot output in my notebook that updates on ...
7
votes
0answers
163 views

Finding hidden treasure (aka finding undocumented functions) [duplicate]

I was searching for a way to determine if a point is within a polygon and stumbled upon rm -rf's answer. (actually, I really wanted to find a point within a ...
6
votes
1answer
731 views

How do I calculate Standard Deviation confidence intervals in Mathematica?

I have a series of simulation results and I would like to demonstrate how the confidence interval for the mean and standard deviation decrease as the number of results increases. I have done this for ...
2
votes
1answer
836 views

How to show factorial in expanded form with variables

When evaluating the following (Factorial[n + 1]/Factorial[(n + 1) - (k + 1)]) with Mathematica 9, the result is sent to output as ...
6
votes
2answers
1k views

How to find the non-differentiable point(s) of a given continuous function?

For example, the non-differentiable point of the function $f(x)=|x|$ is at $x=0$. How to find the non-differentiable points of a continuous function that is defined numerically?
4
votes
2answers
792 views
11
votes
1answer
732 views

Example program for calling Mathematica from C

I want to call Mathematica from a C program. Suppose I have two numbers x = 2 and y = 3. I want to define ...
8
votes
3answers
541 views

Create sine function with random increase in phase

I am trying to simulate a signal that randomly increases its phase, so far I have tried two thing but neither worked. I usually use matlab but I want to learn some Mathematica so I thought I would try ...
12
votes
1answer
380 views

Can Manipulate controls have the option Appearance -> “Labeled” by default?

I was wondering if there's a way to tell Mathematica to use the option Appearance -> "Labeled" for all Manipulate commands by ...
4
votes
1answer
214 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 ...
6
votes
2answers
3k views

Need 4D plot (3D + color for function) [duplicate]

I have a function f(x,y,z) of three variables and some constants: ...
12
votes
1answer
993 views

Solving Killing equations

Is it possible to solve Killing equations in Mathematica for a general vector? I am looking for a way to create Killing equations and then find what the vectors are, but I have a problem with this. ...
4
votes
1answer
112 views

Error from BoundedDiagram

I cannot understand the meaning of the error BoundedDiagram::notuniq: BoundedDiagram requires that boundary vertices lie in unique Voronoi polygons. >> BoundedDiagram::nobd: Bounded ...
3
votes
1answer
356 views

Vertex Labeling Problem in a Graph

I am using following codes to create a graph. ...
2
votes
1answer
119 views

Can Map operations be compiled or otherwise sped up for large lists?

I'm performing a series of Map operations in the following script: ...
1
vote
1answer
617 views

Custom ticks failing with Frame

I know I can manipulate ticks: ...
14
votes
1answer
570 views

Size distribution of nanoparticles from a transmission electron microscopic image

I have found a research article about Martian sand grain size determination from the image using Mathematica (Figure 2 in the linked article). They have not provided any detail of the methodology. It ...
2
votes
1answer
498 views

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