0
votes
0answers
1 views

MathLM: how do I get it?

Really simple question: How do I get a copy of MathLM for my cluster? I have installed grid mathematica server on all of the machines I need but have no idea how to get them to talk. I can see them ...
0
votes
0answers
8 views

How to use babylon translator in mathematica help?

I have mathematica 9 in window seven ,and using babylon 10,but babylon can't read (scanning) words from help of mathematica. Please help me to solution this problem.
0
votes
0answers
6 views

integration of delay differential equation

i am unable to get the answer for integration of delay differential equation. The solver is returning the input, as it is, in traditional form without giving solution. my input in notebook is: ...
1
vote
0answers
16 views

Could not obtain the result

I want to calculate the symbolic integral, but I could not obtain the final results from Mathematica. ...
0
votes
0answers
8 views

Inhomogeneous phase-portrait with StreamPlot

I have a problem with a must-be simple streamplot. The potential function governing the motion is U, and I have the following code in Mathematica: ...
0
votes
0answers
8 views

Understanding of method for NDSolve

I used automatic method for NDSolve. Then I asked myself - which method Mathemathica prefered? I got an answer for this question on this forum, that I need to use: *Select[Flatten[ ...
0
votes
0answers
11 views

How do I visualize the result of EdgeColoring[g]?

Combinatorica has a heuristic edge-coloring function EdgeColoring. When I execute it on a graph, the result is a list of integers. My guess is that an integer $i$ ...
0
votes
1answer
11 views

Finding all instances of length $N$ common subwords in two strings

Given a pair of strings, I'd like to return a list of all common subwords of a fixed length of "n" characters (i.e. contiguous subwords of length "n" that occur in both strings), allowing for ...
0
votes
1answer
24 views

How to test if any set of pairs contains elements of other list? no matter order of elements

I want to detect if a set of pairs, for example a={{2,5},{6,3},{1,4},{8,7}} contains a given pair, for example tabu={{4,1},{2,6}} but don´t be relevant the order inside pair (pair {i,j} is equal to ...
1
vote
1answer
26 views

Different Poincaré maps for same Equation

I've seen the Wolfram Poincaré example. I'd like to modify this sample in order to have a list of Poincaré maps. In the example the event is captured only when ...
0
votes
0answers
40 views

Deformation of pictures

If I get a picture, and imagine it as a complex plane, then given a function how to visualize the resulting deformed picture? Put it in this way: choose the left bottom vertex of the picture as the ...
0
votes
0answers
11 views

Questions about CountryData

a. What is the proportion of Internet users to population in the United States? I am really confused. I don't where to get these information from and how to set up the proportion. b. What countries ...
0
votes
0answers
22 views

How to switch elements i,j in a list? [duplicate]

Are there any direct function to switch elements i,j in any list? or is necessary to create one with Do / If ? (I don´t ask for making me this function if it doesn´t exists) My target is can ...
0
votes
0answers
24 views

How should I do to Return a value to a multi-line function? (functional programming)

Minimal Question as resume of my dude (explained after line 10) . Solving this is enough for me: ...
2
votes
1answer
36 views

Visualization of matrix transformations

I define the "matrix transformation" here as follows: $\left[ \begin{matrix} x_1' \\ x_2' \\ \end{matrix} \right]=\left[ \begin{matrix} a & b \\ c & d \\ \end{matrix} ...
5
votes
2answers
72 views

Nothing appears in simple plot

I'm trying to get the following simple code to work. (The code is just supposed to graph the norm of the second derivative of a vector function). ...
0
votes
1answer
16 views

Questions regarding DictionaryLookup of Mathematica

a. Make a function longest[lang_] that gives the length of the longest word in the dictionary of lang. You should get ...
0
votes
0answers
27 views

Find lengths of contours in a ContouPlot

I am trying to find the lengths of different contours in the following plot: It is a complicated piecewise function evaluated on the unit disk. I am hoping there is an easy, generalized way to ...
1
vote
1answer
41 views

Butterworthfilter data filter

I am currently doing a signal analysis and filtering using Matlab. The filter I am using is Butterworthfilter model to filter scattered data (vector data). I am using Matlab as follows: ...
0
votes
1answer
24 views

load static library (.lib) using NETLink

is it possible to load static library (.lib) compiled in c++ using NETLink or similar in Mathematica?
1
vote
0answers
29 views

Why does Network`GraphPlot`wrapper appear in my GraphPlot?

I'm making a GraphPlot of data similar to this: ...
0
votes
0answers
36 views

Fold Dynamic Function

I'm making on a demo working with differential equations as functions of two variables (x and y). The demo will have to Fold the differential equation with an initial y-value and a series of x-values. ...
0
votes
0answers
31 views

How can I include a popup menu in my wizard's content?

I'm trying to create a wizard that enables the user to choose between different shaft components. At the same time, I need a flag to be 1 if he chooses a bearing and 0 otherwise. I extended the ...
4
votes
2answers
81 views

Different colors for nodes in tree plot

I have some list of numbers which I am plotting using TreePlot. This is the code: ...
0
votes
0answers
35 views

Simple propability issue [on hold]

I have a simple problem: I have 16 kitties. There is 1/2 chance to get a male and 1/2 chance to get a female. What is the probability to get at least a female? Then, if 10 kitties die, what is the ...
3
votes
2answers
81 views

Import multiple files from folder in order of date added

I have a folder that contains certain files I want to import. In my case those are .png files. As all the files I want to import contain the phrase "accum" in their filenames, I can use ...
1
vote
0answers
31 views

ImageCapture on Windows 8.1

I have an Asus SmartTab tablet with Mathematica 9 on it. When I run ImageCapture, nothing shows up in the image window. Originally running this completely crashed ...
5
votes
1answer
86 views

Why does Arrow not work well with Scaled coordinates in 3D?

I am a little puzzled by the fact that if I try to use Arrow with Scaled coordinates in 3 dimensions the arrowheads are all over ...
5
votes
1answer
95 views

How can I get this Graphics3D to rotate around a particular sphere?

I made this Graphics3D of the Sun with the plotted orbits of a few astronomical objects. ...
4
votes
2answers
52 views

Document Creation: inserting a grid

This question is strongly related to: NotebookWrite Cell with Grid Let’s create sample chart ...
1
vote
0answers
25 views

Is there a way to convert InlineCell to InputForm once and for all?

After asking a question about making InlineCell similar to Input, I realized that by typing Shift+Ctrl+I I really can manually convert every InlineCell to InputForm. So my new question is: Is there a ...
0
votes
0answers
45 views

Automatic method for NDSolve [duplicate]

How can I understand which method Mathematica automatically chooses to use for numerically solving the following two equations? 1: ...
0
votes
0answers
73 views

Calculating the Lyapunov Exponent/Spectrum for the Duffing Oscillator

Some fellow students and I are trying to calculate and plot the Lyapunov spectrum for the Duffing oscillator (currently a test approach). Each of us has Mathematica knowledge based purely on past ...
6
votes
1answer
189 views

If doesn't compile if its output is the output of Compile?

The smallest sample I can find to reproduce this problem is: test = Compile[{}, If[True, 1]]; << CompiledFunctionTools` CompilePrint@test ...
7
votes
2answers
97 views

Measuring curve length on a binarized image

With the help of almighty Mathematica 9, I got from this To this: with this code: ...
0
votes
0answers
22 views

Export Messing Up Alignment of Bar Chart

Here is my code: ...
5
votes
4answers
99 views

ContourPlot refuses to show in-figure PlotLegends after turn on ContourShading

I would like to do a contour plot with a label inside the figure. For example, the following works well. Note there is a small "example" at the right bottom figure. ...
0
votes
0answers
40 views

How to get integer/rational and real eigenvectors to be the same? [duplicate]

forgive me if I missed this already being answered or too easy. Given a matrix: q = {{1, 3, 5}, {7, 11, 13}, {1/3, 1/7, 1/13}}; Eigenvectors are different here: ...
8
votes
4answers
352 views

Filling a curve between a line and the x-axis

I'm trying to plot the function $f(x)=\dfrac{1}{x^2}$, filling the square area from (0,0) to (1,1) with purple and filling the area under the curve from 1 to 4 with red. However, Mathematica is not ...
2
votes
1answer
41 views

How can I make a stylesheet where inline cells have are styled like input cells?

How can I make a stylesheet where inline cells have are styled like input cells? By "similar", I mean the same font and syntax highlighting. I have even tried copying all settings from ...
1
vote
2answers
83 views

Few quick Mathematica questions about Dictionary

a. Get the list whose elements are of the form {language,number of words in dictionary) I tried this, and it gave me the number if words in dictionary, but I don't know how to get the language part: ...
2
votes
0answers
64 views

Using KalmanFilter or KalmanEstimator

I have the following: ...
0
votes
1answer
28 views

Help with Reduce, quadratic system of inequalities

I'm trying to obtain an equivalent system of inequalities to the one below but without the variables x and z. Somehow Reduce just repeats the command. ...
0
votes
0answers
36 views

What does K[1] represent? [on hold]

I am trying to solve this recurrence relation: RSolve[a[n]==k*a[n-1]+t[n], a[n], n] Mathematica returns: $\left\{\left\{a(n)\to j^{n-1} \left(\sum ...
0
votes
1answer
55 views

SplicedDistribution - different definition across Mathematica 9?

I am having troubles with my notebook. I succesfully defined Asymmetric Laplace Distribution at school using SplicedDistribution function, and Mathematica was able ...
1
vote
1answer
62 views

How to specify the centre or PlotRange of a Graphics3D?

When I create a Graphics3D, I often want to place an object right at the centre of the box. Initially I thought that the centre was specified by ...
10
votes
1answer
177 views

Bizarre behavior of With, Compile and Break

I'm guessing this is almost certainly a bug in Compile (because they're fairly common), but it's pretty weird and I spent about an hour tracking down the issue and ...
-1
votes
0answers
48 views

How to generate all symmetric positive semidefinite 0,1 matrices of a given order [on hold]

The title says it all. There are many instances when we need to check some properties of such matrices. I am looking for an efficient code.
0
votes
4answers
107 views

RSolve fails on a two-equation non-linear system

I have a system of just two recurrence equations, I need to solve them and so I use RSolve: ...
0
votes
0answers
11 views

Showiing that matix is an eigenvector? [migrated]

Let A= a b c d be a 2 x 2 matrix, where a,b,c and d are real numbers. We say that A admits an eigenvector if there exists a unit vector u and a real ...

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