# All Questions

75 views

### Network Graph: show highly connected components

I want to create a network graph without the small subgraphs which are disconnected from the big network graph. Suppose I want to visualize the edgelist: ...
80 views

### Displaying a matrix with integral entries

I have a matrix nxn with coefficients a[i,j] like: a[i,j]=NIntegrate[T[r], {r, -le, le}] - NIntegrate[T[r] Abs[r]/le, {r, -le, le}] I can solve the matrix but I ...
76 views

### How to extract the time t of an interpolated function created by NDSolve? [duplicate]

I'm working with the function NDSolve. I give it the time of integration, the time I want it to evaluate my differential equations. Sometimes, it crashes before the end of its attribuated time ; For ...
118 views

### How to connect to a video stream?

Is there a way to get a current frame from video streams (especially from RTSP streams)? I would like to connect to a camera in my local network and get a snapshot from it to do some further ...
58 views

### Sum of Products [closed]

What is a way to nest a product in a sum: $$\sum_{i=2}^{N}\cos\theta_i\cos\theta_i^\prime\prod_{j=i+1}^{M}\sin\theta_j\theta_j^\prime$$ where $N$ and $M$ are two numbers? Thank you.
322 views

### Any examples how the software industry uses the Mathematica in production? [closed]

Many researchers prototype the algorithms in Mathematica. I know the Mathematica is great for doing the scientific research. But what about the software industry? Do you know some companies that use ...
100 views

### Count two or more equal consecutive elements in a list and create histogram

I have a list generated by: list = RandomInteger[{1}, 100] it contains only 0's and 1's ...
101 views

### GatherBy output with given Shape

I would like to group items in a binary list according to some property like in the following simple example. ...
39 views

### DynamicModule - Bookmarks / Autorun menu?

Using DynamicModule in my code, I observed that there is no Bookmarks / Autorun menu (the small "+" in the upper right corner...). Is it possible to add it somehow and to make Bookmarks available only ...
176 views

### List of Recently Opened Files

If I go to the menu bar and press File I get a list of recently opened files.This would be useful except they are edited and mostly replaced by dots thus making choosing difficult. See the screen shot ...
59 views

### function of a function [closed]

I have the following two functions, 'f' and 's': ...
48 views

### Apply ListPlot to various data sets [duplicate]

Assume that I have data in the form: list = {{{1, 2, 3}, {10, 10, 10}}, {{4, 5, 6}, {20, 20, 20}}} I want to plot ...
52 views

### Finding function by constraints

I have the following coefficient finding problem: f[x] := a * Log[b*x + c] + d Constraints: f[0] = 1 f[80] = 0.5 I want to find the coefficients of f that ...
191 views

### Arbitrary shape GridGraph

There is a function GridGraph that generates a finite square lattice graph. Is there a way to make a generalized solution (e.g. with hexagons, or triangles instead of squares)? To put it in more ...
81 views

### How to type this certain expression (duplicate question for reference purpose)? [duplicate]

In graphing I hope to output the following format for example $|a_{1020}|^2$. I need to use this as my axes label in a plot and to type this expression in Mathematica. I am fully aware there is a ...
42 views

### Finding intersection of two infinitely long lines using points [duplicate]

EDITED In the Find intersection of pairs of straight lines problem, it is assumed that line are intersected by default and the purpose is to find the intersection points. In the present problem, two ...
70 views

144 views

### How to debug this failing pattern-matching expression?

NB: this question is primarily about troubleshooting and debugging, and only secondarily about pattern-matching. IOW, I'm far less interested in getting an explanation for the situation described ...
128 views

### RegionIntersection fails for some values with polygons

Bug introduced in 10.1 and fixed in 10.3.0 I want to find the intersection (region) of 2 polygons. I use RegionInstersection but it only works for some sizes, ...
155 views

### Adding FrameLabels but without showing a Frame using GraphicsRow

I'm trying to create a set of plots that share similar axes (axes in the general sense, I'm actually using Frame). I'd like to have the text describing the axes plotted to the left of the first plot ...