# All Questions

15 views

### Plot a function with three parameters subject to conditions

I have no idea how to plot function with parameters/conditions. Can someone give me tip how to do it? Conditions Where x ∈ [0, 1] a, b, c ∈ R Finally I have ...
23 views

### Solve equations with Monte Carlo

I am dealing with a complicated problem. I will use a simple problem to explain it. I have two variables x and y, and two equations: x+y=A 2x+y=B The value of A and B is determined by measurement, ...
15 views

### How to correctly calculate symbolic eigenvectors

I give a minimalistic example of my problem: I have a matrix: m[a_,b_]:={{0,-a+b},{b,0}}; I define the eigenvectors as: ...
32 views

### Extract Infromation from TransferFunctionModel [on hold]

I have a MIMO TransferFunctionModel and what I would like to do is get the transfer function of $j^{th}$ output to $i^{th}$ input. I just want to access this particular transfer function and do ...
57 views

### Solving Boolean equations

I would like to have Mathematica solve this system of equations but I have no clue how I can best integrate those "if" lines. Can you give me a hint or some lines of code?
21 views

### Graphics, Import and Inset combined

I need to write a word on a figure, which I have saved as fig.pdf. 1) I import the pdf file to mathematica: a = Import["fig.pdf"][[1]]; 2) Following the ...
30 views

### Multiple output cells, suppressed by semicolon

I'd like to write a function that outputs multiple cells, as in Multiple output cells, but not when the function is called with a semicolon at the end. Any idea how?
23 views

### Calculating the top left corner in a 2d field

Given I have a field with several rectangles like shown in the picture. A point with its x and y coordinates are given. The height(h) and the width(w) are also given. How can I calculate the top ...
43 views

### ListPlot problem

I have the following example: x = {1, 2, 3, 4} y = {{1, 2, 3, 4}, {2, 3, 4, 5}, {3, 4, 5, 6}, {4, 5, 6, 7}} Now I can plot: ...
29 views

### How to put a moving label

Here is a simple Manipulate with a threshold. ...
17 views

### Moving label with manipulate

In the following Manipulate, I would like to plot a distinct comment in each distinct zone which will move with the manipulation. Is it possible ? ...
23 views

### Finding negative sequences in a large list: optimization

I ran across an interesting challenge recently, and I was thinking this community would know how to optimize it. I have several data sets which have (currently) about 50k-100k points. The sets ...
34 views

### Built-in (or Terse) Method to Combine and Transpose Datasets

From some calculations I have ended with Datasets of the form: ...
19 views

### Inconsistent behavior from RegionMeasure on the RegionIntersection between a Polygon and a Line

Consider a Polygon with lines drawn between two of its vertices, ...
24 views

### plotting conditional expression with mathematica [duplicate]

My code that I previously asked, is in this way(that first I define parameters): ...
22 views

### Integral Involving HeavisidePi and its Derivative

I have been trying to compute these integrals ...
28 views

### Newline in code with MakeExpression

I start with f[x]. In boxes, this is RowBox[{"f", "[", "x", "]"}]. I apply ...
36 views

### Export list in 4 columns without curly brackets

I have generated the following list: http://pastebin.com/vmtRrfcD (updated) The dimension of the list is ...
19 views

### Dynamic stops when shorten section

When I shorten the sections so I can get the input (slider bar) and out put on the page, Dynamic no longer works. Dynamic only works if you keep all the sections open. Is this a bug or is this ...
35 views

### N[Integrate] failing to return an accurate result from an interpolated integrand

I need to N[Integrate] a function Cos[alpha*x]*f(x) between x=0 and 30 at increasing alpha-values. Here f(x) is an interpolated function derived from a set of 120 ...
26 views

### Two stage maximization

I'm new to Mathematica and this site. I want to evaluate a two stage maximisation problem. I am interested in finding a1N. I hope this is in the appropriate ...
22 views

### How to count number of white voxels in an image

It seems to be a very simple problem. However, I don't have any clue how to count the number of white voxels in a binary 3D image. Re: Consider segm2 in the following link: ...
29 views

### The permutation of given number sequence that has specific correlation with another

I am interested in the relationship between the Pearson correlation coefficients and the permutations of two random number sequences. An initial Mathematica study is as below: ...
25 views

### How to use Mathematica and Wolfram Alpha for predicting football results? [on hold]

This is more of a fun question :D. At work we have been discussing and goofing around a lot on how to create algorithms in order to make predictions on the results of the upcoming UEFA EURO 2016 ...
22 views

### Grid - change entire row background color based on values on one column?

Given a matrix defined through Grid, how can I specify the background color of entire rows based of the values of the cell in a specific column? For example, I have ...
56 views

### How can I plot conditional expressions?

I want plot an expression that includes some integrals. The values of these integrals are conditional expressions, and this is making plotting difficult. My code: ...
16 views

### How do I use Mathematica to upload to Clyp?

Clyp is a service for hosting sound files that (as of now) doesn't require registration. I'm wondering if it's possible to write a function that'll upload a Sound object to Clyp, just like the ...
19 views

### Evaluates fine but blank printing/pdf?

Hey guys I've got a document that evaluates fine but when I go to print preview/print/convert to pdf the result is a single blank page. Any thoughts as to how this occurs?
141 views

### Is it possible to assign numbers generated in an Error-Message?

If I have a differential equation of the form ...
55 views

### Antialiasing points on a line?

I'm probably being stupid here, but I can't get my points to go in a smooth line: At this scale they should all equally cover the red line. I must be doing something wrong, anyhow I tried to use ...
45 views

### How to make height of PlotLegend the same as height of plot which has a fixed horizontal width

This is a problem of Legends in density plot. As pointed out by this post. Generally we want to same height of legend bar and plot. The code for the basic case is ...
20 views

### Stop front-end auto-adjust of window to output

I have made a simple "percent complete" output to track my For loop, where I incrementally print values and then delete the output right before printing the next ...
35 views

### How to set color function to black & white monochromatic density plot [on hold]

Here is a density function ...
64 views

### Solving for five unknowns in a 3 x 3 matrix

I know that matrix.Transpose[matrix] = IdentityMatrix[3] matrix = {{0.8111, 0.4867, -0.3244}, {a,b,0}, {c,d,e}} I tried ...
65 views

### Integrate and NIntegrate disagreeing over branch cut of Sqrt?

Bug introduced in v9.0.1 or earlier, and persisting through v10.4.1. In Mathematica 10.2 I'm trying to integrate this piecewise continuous function, but ...
35 views

### Plotting points using adjacency matrix

Given an adjacency matrix on n vertices and a polygon on n vertices, how to add edges from adjacency matrix on the Polygon? eg: if polygon is {(0,0),(0,1),(1,0),(1,1)} and the adjacency matrix has 1 ...
20 views

### how to choose from M a point which will be the center of the circle, and in that circle must be a minimum of points [on hold]

C programming on a plane are given a set of points M. Choose from M a point which will be the center of the circle, and in that circle must be a minimum of points
63 views

### Argument attributes for pure functions

In his book, Leonid Shifrin says: One important limitation of the # - & notation for the pure functions is that it is ...
17 views

### Text interface + scripts: How to use all available cores

For example, the remote host I'm working on has 12 cores: ...
33 views

### Solving and Plotting Infinite sums over solutions to transcendental equation involving Bessel functions

I am trying to use Mathematica to plot the following equation $E(q,\Delta)$ vs $qa$, for set values of $D \Delta/a^2$ and $\bar\rho a/D$. I have looked at other stackexchange posts which deal with ...
63 views

### ArrayPlot with a user-defined color function is misbehaving

I am using ArrayPlot to show some arrays with values from 0 to 1. I want 0 to be black and 1 to be white, so I am using: ...
46 views

### How to understand the LocalClusteringCoefficient use in directed graph? [duplicate]

When this function use in undirected graphs,its action is normally and can be explained by this formula $$CC_v=\frac{n}{C_{k}^{2}}=\frac{2n}{k(k-1)}$$ n is adjacent nodes of $v$'s number of ...
24 views

### Troubles with showing axis after saving in EPS

I'm trying to save a picture in EPS and then to put it into my LaTeX document. But when I put it the left axis is not shown. How do I fix it? (look at the screens) If I save the image in JPG, ...
11 views

### Subtle behavior differences of DialogNotebook and PaletteNotebook when using FileNameSetter

Consider code snippet 1 which displays desired behavior: ...
93 views

### Visibility Graph of Polygon

Could anyone provide a function that takes a polygon as input and outputs its visibility graph ? Visibility Graph If not, is there a function that checks whether a line segment lies inside a polygon? ...
121 views

### Extracting *firstly roots* from some lists to plot their pairs values

I have two different lists as list1 and list2. Their ListPlot3D of them are: and As shown in these plots, there are some points of which ...
39 views

### Stopping NDSolve when encountering stiffness

I am solving a differential equation for different initial conditions using ParametricNDSolveValue. I need to look at the value of the solution at some later point, ...
51 views

### Extracting the data of each frame from an AVI file

What's the most straightforward way to "Import" the data of an AVI video? For instance, if I record a 30 frame per second video, then after 10 seconds I would have 300 frames. How can I import the ...