# All Questions

64 views

### Column Operation - Subtract part of nested list from part of another nested list [duplicate]

I have two lists with x- and y-coordinates with different z-coordinates of the form {{x0, y0, z0_1}, {x1, y1, z1_1}, ..., {xn, yn, zn_1}} and ...
251 views

### How do I feed data points into an equation to solve NUMERICALLY?

I start with this equation and solve it numerically for $z(x,y)$ in the range $1 < x < 5$ and $1 < y < 5$: $$\frac{3}{xyz} - 2x - 3y - 5z = 0$$ Then using the data points of $z$ above, ...
396 views

### Histogram with variable bin size [closed]

Suppose I have some dataset,e.g., Histogram[RandomVariate[PoissonDistribution[2], 10000], 10] which gives, $\hspace{2cm}$ How can I change the histogram such ...
126 views

### How to get output from standard error in command line?

I'm trying to run some external command line program in Mathematica, and I have problem getting the output. For example, ...
107 views

### Sublists of Random Permutations

What is an efficient way to create a list of (psudo)randomly chosen permutations? I'm trying to create a list like below: ...
162 views

### Simpler code evaluating Dickman's function?

I've read here that Mathematica 10 can Obtain symbolic solutions to delay differential equations. Would that help in numericaly evaluating Dickman's function $\rho(u)$ ? It is a delay differential ...
429 views

### Computing the average over the values of the boxes surrounding a box in a grid

Recenty,I encounter a problem described as below: I have a table that owns many boxes,and each box has a sequence like 1,2,3,4,etc.In addition,every box has a value. Now I want to make the ...
2k views

### Solve Laplace equation using NDSolve

I am new to Mathematica, a friend recommended this software and started using it, in fact download the trial version to know. I recently did a program in C to calculate numerically the solution to ...
57 views

### Combining separate CHColorStructureDiagrams to form one molecular structure

I am trying to attach a fructose molecule to a sucrose molecule by using information obtained from the following ...
150 views

### How to use a custom CDF in a Kolmogorov-Smirnov test

How do I use a custom CDF that I defined for a Kolmogorov-Smirnov test. I have one input vector of data whose CDF I claim to have derived but want to check whether it agrees with my closed form ...
3k views

### Plot electric potential and field

I am trying to plot an electric pottentional of a dielectric cylinder along with it's field. The pottentional is a piecewise function ...
133 views

### Retrieving coordinate positions using ChemicalData for input to quanutm modelling software

I am trying to set up an input file for a quantum chemical modelling software. How do I obtain the (XYZ) coordinate positions in Angstroms using information obtained using ChemicalData. Have some ...
144 views

### How to get an Excel-like surface plot with ListContourPlot3D

I'm trying to create an Excel like surface plot from an import of data from an Excel workbook. I get the data without issue. It is a set of percentages in bin ranges over a series of dates. I'd ...
89 views

### Set Frame Margin for Exporting Video File (.avi)

I have a question regarding setting the frame margins of exporting .avi file. I want to make a short video of some pictures I import using Table: ...
198 views

### Plot A Function Of A Stochastic Process

I am trying to do something very simple in Mathematica 9. I want to play around with option pricing and for that I thought it best to use the new stochastic process functionality. So, first of all I ...
81 views

### How to use many global assumptions [closed]

I would like to use many global assumptions. Say I have two global assumptions. $Assumptions = 0 < a < 1$Assumptions = 0 < b < 1 Then I would like ...
45 views

### Getting message NIntegrate::inumr: in V10; did not happen in V9 [duplicate]

I just tried making a ParametricPlot that worked error-free in Mathematica 9, but now produces errors before successfully plotting in Mathematica 10. It appears to ...
47 views

### Strange behaviour of Set and Part when given a sequence

Consider this example: lis1 = {a, b, c}; lis1[[2]] = Sequence[e, f]; lis1 (*{a, e, f, c}*) lis1[[2]] (*e*) lis1[[2]] = Sequence[g, h]; lis1 (*{a, g, h, c}*) It ...
54 views

### Problem with importing numbers resulting from an executed file in Mathematica [closed]

I am running Mathematica 10 and I have a mathematica file, MBdebug.m, that contains the line val = Import["! ./MBpart1ep0", "Table"]; MBpart1ep0 is an ...
360 views

### How to use Mathematica to turn a picture into low poly style?

I want to use Mathematica to turn a picture into low poly style. That is, to make the following conversion: Bill to Bill low poly(Using Image Triangulator App). I think the biggest difficulty is how ...
126 views

### Selecting from Manipulate for ParametricPlot3D

, Referring to yesterday's "Switching parameter lines on/off in a 3D parametric plot" (Switching parameter lines on/off in a 3D parametric plot) From reply by Bob Hanlon for example, can we pick up ...
40 views

### Compiled DiagonalMatrix

The standard function DiagonalMatrix cannot be compiled, so I tried writing my own: ...
301 views

### How to define a function or procedure that includes multiple steps?

I would like to define a procedure or function that takes as input an integer, s, and gives as output two nested lists. I have written code (shown below) that does this for one particular value of s, ...
230 views

### Is there a built-in function which detects singularities in a function?

Given a function f[x] and a region M in the complex x-plane, how can I find singularities of f in this region, i.e., issue a ...
272 views

### Solving mixed integer programming using Mathematica

Let $x_{ij}$ be an $n\times k$ matrix defined as follows: $x_{ij}=\begin{cases} 1, & \text{if }s_i\text{ is assigned to }S_j \\ 0, & \text{otherwise } \end{cases}$ and $S$ is a set of $k$ ...
428 views

### Syntax of transpose etc [closed]

This is a simple question: {{0, 1}, {0, 2}, {0, 3}}*Transpose[{{0, 1}, {0, 2}, {0, 3}}] returns an error in Mathematica but works perfectly fine in Wolfram Alpha. Can someone help me? Thanks so ...
41 views

### Is it possible to pass a “shared” integer in librarylink?

MTensor supports shared pass, where the argument can be modified in the library function and that modification can be seen in Mathematica side. Is it possible to do the same thing to a integer or ...
252 views

### Save output of NDSolve to a file

I am solving following differential equation using Mathematica, ...
213 views

### Understanding Dirichlet regularization in Sum

I've tried to calculate few classic sums using Dirichlet regularization: ...
126 views

### how to find the vector intersection in a collection of triangulated 3D points?

I'm trying to calculate the 3D point coordinates for the intersection of a vector with a plane. I have been using the following code to do this: ...
1k views

### Flying to Australia

I want to compare different flight routes to Australia and their lengths. So far I have written: ...
61 views

### How could I make visible the convex hull of 3 point inside this region?

Small version of the question How can I control the color and the Thickness of this graph?? ...
52 views

### Automatically restoring the state of a prior session [duplicate]

I have the following problem (I guess a very naive one): I work with some data and make a statistical analysis in Mathematica. I do it over several days and each time I open the file, I have to go ...
140 views

### Generating function for Newton series?

The function GeneratingFunction gives generating function for Taylor series. Is there a similar function for Newton's series? $$f(x) = \sum_{k=0}^\infty \binom{x}k \Delta^k [f]\left (0\right)$$
296 views

### Hardware required to perform large symbolic calculations

I'm choosing components to set up a pc aimed to run large symbolic computations in Mathematica 9.0 under Windows 7 64 Bit Pro. I have a limited budget therefore I'm considering this system: Mother ...
159 views

### Strange Behavior when making Equal Listable in Pick

While trying to make this problem more efficient I tried different methods and dabbled with making Greater and Equal ...
2k views

### How to manipulate web pages on Mathematica?

I wanted to input some data on this page through Mathematica: http://www.fundamentus.com.br/buscaavancada.php Then I would press the "buscar" button also through mathematica coding and get the ...
77 views

### Geomarker Scaling

Struggling to get a 3d cylinder to scale properly on a street map. I want to use the stacked cylinder as a custom pin. ...
114 views

### Showing “updating…” message while Manipulate is re-evaluating

Is it possible to show a fixed text such as "updating..." instead of the last result shown, when Manipulate is re-evaluating an expression (in a slow evaluation ...
104 views

### How to append to a list of lists elegantly [duplicate]

I have have list of lists and I would like to be able to append an element to the start of each list. I am sure there must be an elegant solution. EG: a and ...
765 views

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179 views

### Why ColorReplace does not follow the rules specified?

I tried to use ColorReplace to change the colors obtained from MorphologicalComponents. However some of the changes didn't ...
573 views

I've upgraded to Mathematica 9.0 on Ubuntu 12.04 with the latest Nvidia driver (304.64). I load CUDA by using, as usual, Needs["CUDALink"]. ...
252 views

### How to obtain the GIF by Mathematica?

Is it possible to create such GIF illustration amination by Mathematica? and the rendering effects of each trigonometric function curve. UPDATE I have mainly two puzzles: 1) how to obtain the ...
1k 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? ...
61 views

### Calculate deviation of sum of several equal normal distribution [closed]

I have a normal distribution with mean m and standard deviation d. How can I calculate what will be the deviation if I add N such distributions? As I understand, mean will be m*N. Will standard ...
219 views

### reconstruct a 3D curve from discrete curvature and torsion

I tried to reconstruct a 3D curve with given curvature and torsion. I saw some threads talking about using runge kutta. However, as far as I see that they required curvature and torsion were ...
82 views

### ListLinePlot of data imported from an Excel file [duplicate]

This is a continuation of another very similar question about how to plot structured data using ListLinePlot. Here is a sample data imported from an Excel file: ...