All Questions

42 views

Manipulate Parametric Plot

Is it possible to plot the values of x and y in Mathematica? ...
60 views

Coloring edges of a graph according to their weight?

What's the simplest way to plot a graph with weighted edges, such that the color of the edge corresponds to the weight of the edge?
47 views

Hypergraphs on Mathematica?

An hypergraph is a generalization of a graph, in which an edge can connect more than two vertices. Thus you can think of an edge in an hypergraph as a subset of nodes. Since version 8, Mathematica ...
26 views

Question about the Commonest function during a split

How can I alter the Commonest function so that when I give it (say) an input of four zeroes and ones such as $\{0,1,0,0\}$, it chooses the most common element however, if there is a split, such as ...
67 views

interpolating function over dates

I've got a bunch of readings at various dates and times. I'd like to be able to interpolate and then integrate over, say days. I can do this by converting my date/time to ...
79 views

How to Nest a Function with three Arguments?

I have two functions with three arguments $f_x(a,b,t)$ and $f_y(a,b,t)$. And i need a nesting like this ...
26 views

50 views

How to include a parameter in ListPlot

How can I include in my following ListPlot command that I want theta to have the values 0, 22.5, 45, 67.5 and 90? ...
183 views

FEM: Nicer Element Shape for Spherical Region

I'm trying to generate a mesh for later use in the Finite Element Method of the DSolve command. It is basically a parallelepiped with a spherical indentation. I'm ...
33 views

Difference in output from R's mvtnorm and Mathematica/Java

Let a=$\mathcal{N}(6.532056,0.06532056)$,b~$\mathcal{N}(8.390961,0.08390961)$ and c~$\mathcal{N}(8.736566,0.08736566)$. We use $\mathcal{N}(\mu,\sigma^2)$ notation unless specified otherwise. We ...
41 views

Inactive derivative: extract constants

I have a problem with an unevaluated derivative. In the example code below, i need the integration wrt to y be evaluated, while the differentation wrt x needs to stay unevaluated. I see the point that ...
62 views

Segmentation of sunspots

I recently went for a walk with my camera and snapped a few pictures of the sun. The pictures didn't turn out too well, but this was to be expected without a telescope. I thought it might be a nice ...
67 views

How to create an irregular pulse train?

I was wondering if anybody knows how to create a pulse train which gives audible clicks at irregularly spaced time intervals, i.e., a time rather than a frequency domain model. A friend wrote a Matlab ...
91 views

Dynamic ListLinePlot

I have a list of lists looking like this: {{{x1, y1}, {x2, y2}}, {x1, y1},...}}. Furthermore I have defined a legend, which is taken from the filenames. Now I want ...
37 views

What is the status of ::Usage and Templates in Mathematica v10?

In Mathematica 9, a number of issues concerning the ::Usage and templates were raised. In 9.0, there was a bug first reported here and better diagnosed here, where ...
31 views

Transforming parametric representation of coordinates into cartesian coordinate system

Is it possible in Wolfram Mathematica to transform output of BSplineFunction so it returns results in cartesian coordinates not in parametric representation?
23 views

kernel stops evaluation, clears variables

I am using the new Mathematica 10 student edition. As I am evaluating a table of integrals and calling NIntegrate repeatedly, the evaluation stops without error and the kernel clears all variables. ...
250 views

How to get $x$ in terms of $y$ and $w$ from $w = a p x^{p-1} \left(a x^p+b y^p\right)^{\frac{1}{p}-1}$

I'm having trouble to solve the following equation for $x$ both manually and in Mathematica: $\quad \quad w = a p x^{p-1} \left(a x^p+b y^p\right)^{\frac{1}{p}-1}$ In Mathematica notation: ...
599 views

How to blend two photos in Mathematica?

The following two photographs forest and tiger were blended into one with screen blending mode in Photoshop. How to accomplish the same result in Mathematica? ...
132 views

Breaking up combined data into several smaller data sets

I have one combined data with first number as the x-value and the remaining as different y-axis values (y1,y2,y3...). How do I break this combined list, data= (x,y1,y2,y3...) into smaller lists, such ...
102 views

FindClusters giving wrong groupings

I am having trouble getting FindClusters to find the right clustering for this set of data (and many other sets of data similar to it): ...
50 views

I can't Plot the equation -(π/4) + x - 1/2 Sin[2 x] == 0 [on hold]

I'm starting with Mathematica and I can't solve numerically the equation -(π/4) + x - 1/2 Sin[2*x] == 0 using NSolve as well ...
139 views

How to find this limit correctly?

How to find the limit Limit[n*Sin[2*Pi*Exp[1]*n!], n -> Infinity] ? Mathematica 10 outputs ...
52 views

Solving system of 9 differential equations with Im & Re parts

I tried to solve a system of nine differential equations. Actually, I tried to do it in two ways, and both of them give me the same error: NDSolve::pdord: Some of the functions have zero ...
44 views

What's the difference between this differentiation? [on hold]

I've tried to evaluate a sum and get a result in terms of Zeta function. And I have results in two forms: ...
42 views

Implementing local variables of a recursive function with either Module or Block

First, some quick background: I have been eagerly learning Wolfram and Mathematica for two months now, and along the way have written about 250 pages of teaching material that has ballooned into a ...
50 views

Parallelizing sparse array construction

I have a very large sparse array, and the computation of individual matrix elements is fairly expensive. The Matrix is Hermitian and traceless, so I would like to construct only the sub-diagonal ...
124 views

Driven simple harmonic oscillator — amplitude of steady state motion

I am (partly as an exercise to understand Mathematica) trying to model the response of a damped simple harmonic oscillator to a sinusoidal driving force. I can solve the differential equation with ...
37 views

NonlinearStateSpaceModel: Trying to parse the documentation

I am trying to follow the documentation on NonlinearStateSpaceModel here, and the first basic example throws me for a loop. It says it's defining the nonlinear ...
46 views

Symbolically solving a system of nonlinear equations

I am trying to solve the following system of equations and did the following ...
58 views

In my code: ...
73 views

Find the solution of A^2+AB+B^2 = f(a,b,c) [on hold]

I wanted to ask the following question: I need to find the solutions (a particular one is enough!) A and B of the equation $A^2 + AB + B^2 = (a^2+ab+b^2)(c^2+cd+c^2)$ How can I do it? Thank ...
36 views

Suggested Settings for Mathematica over X11/SSH Tunnel

I am happy to discover that I can run a Mathematica session tunneled over SSH. However, as expected for X11 applications over the network, Mathematica's GUI does not have the responsiveness that I ...
64 views

Add to the last digit a number

I have data from a Multimeter that has a precision of 0.6%rdg+4dgt. So i want to take the last digit of, say, 12.007 and add 4 to the last digit like ...
179 views

Is there a bug in the Part function of Mathematica 10?

I am using Mathematica 10 now. I typed code below {{1, 2}, {2, 4}, {3, 6}, {4, 8}}[[;; , 1]][[1]] and this gives result 1 ...
177 views

Order of eigenvectors [duplicate]

I have a matrix A = {{5, 4, 2}, {4, 5, 2}, {2, 2, 2}} The eigenvalues are 1, 1, 10 and I need to find the eigenvectors. ...
103 views

Understanding Paste and how to get a string from the Clipboard to use with ImportString

Trying to work on this question I got distracted by my first naive attempt of copying the data and then typing dat = ImportString[Paste[], "Table"] ...
102 views

Importing High Precision (22 digits) data from a file

I want to import list from a file and I am using ReadList but my data is in format like this 8.2457409790900004e+08 but it i being imported like $8.24574*10^8$. Is ...
25 views

Importing FITS file from HEALPix

I am trying to read FITS file created by HEALPix software. The file contains a spherical map of a scalar field. There is the online support on how to use the file in IDL, but not for Mathematica. I ...
108 views

Timeline plotting: horizontal bars of time intervals

This text file logs the time that a process (identified by a number) changes state ("Brown", "Blue" etc.") ...
104 views

3D Contour Plot - parts with gradients less and more than zero

I'm trying to plot sections of the 3D Contours, with gradient less than zero, and more than zero and equal to zero. It manages to solve for the derivative, but when I apply the conditions ...
639 views

How to create a neon light effect in Mathematica?

I tried to use Glow to create a neon light effect on a torus object. The result shown on the left of the picture below looks quite different from the real one on ...
36 views

Can I convert a palette into a toolbar? [on hold]

I have a simple cell editing palette that makes things like toggle "Editable" or "Initializtion Cell". I would like to make this become a toolbar, but cannot find anything that does it. The closes I ...
32 views

Resume Parsing algorithm [on hold]

Which algorithm using for Resume parsing algorithm. for capture candidate name, skills,experience,..etc how extract required information from resume?... how to do program for this problem?... ( ...