# All Questions

61 views

### Constructing a grid of individual plots for data imported from a list of files [closed]

I have to plot 6 data plots (ListPlot) in a GraphicsGrid from 6 different files (each data file has four columns of which the ...
77 views

### How to assert that a list of variables is real in a nice and clean way

You can use the function Element to say e.g. $x,y,z\in\mathbb{R}$ via Element[x | y | z, Reals]. Now if I have a list of ...
87 views

### Creating a tube with custom caps

I need a tube with only one end capped. I can do this relatively easily with: ...
80 views

### how can I plot the Normalized histogram [closed]

I have a table of r and w. I want to chose a random w in the interval [0-1.6] and with interpolation find r relative to this w. For 1000 {W[r],r} I should plot the Histogram with Normalized factor ...
25 views

### “Extract” certain elements of a list of “rules”? [duplicate]

I have the following list: {u1[0] -> 3773.62, u2[0] -> 3773.62, u3[0] -> 48.7871} I need to extract the elements on the right hand side of each rule ...
60 views

### DSolve Error 3D Navier Stokes (z,r,t)

I am essentially wanting to solve Navier Stokes in the [z,r,t] dimensions (2D+Unsteady Flow) for pressure driven flow. However, I keep getting an error I am unable to resolve in my Dsolve such as: ...
160 views

### How can I draw this polyhedron?

I'm high school student, and I am doing research about buildings using Mathematica. I want to plot the polyhedron shown below: I have tried using Table, but it ...
54 views

### Jagged appearance of lines in 3D plot

I wanted to know if there's a simple way to plot some field lines of a 3D vector field, something like an extension of StreamPlot. I've searched for a while, but ...
64 views

### Table generation with SetDelayed function [closed]

I would like to understand why the following two outputs differ: Let us define the following data set: ...
41 views

### How to auto-run user-interface in Player Pro

I am about to start constructing a UI that will be run with Player Pro. I have created the following notebook and marked it cells as initialization cells. ...
142 views

### Trying to solve a system of equation

I am trying to solve 3 equations 3 unknown system on Mathematica in order to get numerical results for my three variables x,y,z but the software is always on the ...
34 views

### Using precision in Mathematica code [duplicate]

I would like to use a specific precision for several different calculations in Mathematica code. I know that using SetPrecision can give you the required precision ...
32 views

### Linear Programming Using Dual Simplex method

I want to solve an optimization problem using the Dual Simplex Method. Although Mathematica gives the result directly when I use the command Minimize but I want to ...
35 views

### Solving a Nonlinear Optimization using Primal-Dual Interior point method [closed]

I want to solve an optimization problem using the Primal-Dual Interior Point Method. Although Mathematica gives the result directly when I use the command ...
19 views

### Creating points that are remoted from one another beyond a certain threshold. Quasirandom sequance? [duplicate]

I am looking for an approach to create a set of pseudorandom pairs of numbers subjected to one condition. They must be not closer to one another than a certain limiting parameter. One approach might ...
94 views

### Why does this LibraryLink example of LinkObject based passing not work? Bug or user error?

There's an example of LinkObject-based passing in the LibraryLink documentation. Unfortunately the cell in the documentation notebook is corrupted, but to skip ...
82 views

### Singular integral mathematica

A = Integrate[Sin[2 x] / (A1 - B1 Sin[2 x] + C1 Cos[x] - D1 Sin[x]), {x, 0, 2 Pi}] The calculation is taking too much time; not returning any results. Any help?
104 views

### How can I fix a defect in the 3D graphics rendering of a coiled tube? [closed]

I use the following code to obtain a tube version of a spring: ...
232 views

### Simulating an optimization problem

I have an optimization problem like below: $\text{minimize } - \sum_k w_k \log r_k$ $a \leq r_k \leq b_k, k = 1, \cdots, 10$ Here, $w$ and $b$ is a set of constant: $w = [w_1, \cdots, w_{10}]$ ...
47 views

### Display a triangle that rotates at certain rate when space bar is held down?

This question is a follow up on: Open a pop up window that runs a calculation in loop until it is closed? How can I open a pop up to show a picture of a triangle that rotates by ...
28 views

### Histogram and Random Lists [closed]

Suppose I have the following list listrand of random numbers from RandomReal[-30,30] (where the size of the list is 40). Is ...
36 views

### Open a pop up window that runs a calculation in loop until it is closed?

How should I construct a code which opens a pop up window, displays a constantly updating image in it and is terminated once the pop up is closed? The constant updating would be an infinite loop of ...
39 views

### Determine what a sound snippet contains?

The function SystemDialogInput["RecordSound"] brings up an interface that lets you record a sound object. Let's say we first record a one second long snippet of ...
59 views

### Slider Size Problem

Consider this simple code Slider[0.5, ImageSize -> {Automatic, 50}] We get But if we add another option ...
143 views

### best practices for saving Datasets and TemporalData to a SQL database

I have been working with a simulation tool that generates large volumes of data, and it's time to start saving this to a proper database. Is there an established mechanism for saving TemporalData ...
69 views

### Assiging random values to an array of variables [closed]

I want to create a number of variables and assign random values to them. This is possible in Python using a single line of command. To be more specific say I want to create 10 variables whose value ...
23 views

### set “input” as default style for newline entry

I altered the notebook stylesheet ArticleJournal to my needs and I'm using it as a private stylesheet. However, every time a new line is encountered; it assumes as text by default since its a journal ...
119 views

### How to calculate the mean of images?

In practice, subtracting the mean image from a dataset significantly improves classification accuracies. I thought there would be a ImageMean[] function but can't ...
47 views

### Issues adding properties to multigraph

Today I was working with a large multi-graph with properties on the edges when I discovered that properties aren't assigned as expected. My preferred graph construction method is to specify ...
54 views

### Manipulate After upgrading to windows 10 [closed]

After upgrading to windows 10, whenever I run any kind of Manipulate function in Mathematica 10.1, the program freezes. This can be as simple as Manipulate[x,{x,0,5}]. Does anyone else have this ...
33 views

### How to implement specific cell grouping behavior?

Here's the situation in my Mathematica notebook: I'd like the bottom cell to be grouped with the cells above it. Here are those same cells toggled into code: ...
50 views

### FindMinimum pre-conditioning

I am wondering about what kind of pre-conditioning FindMinimum performs on the user specified function (to be minimized) before the actual minimization starts, and ...
107 views

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44 views

### Dynamically highlighting elements sharing common properties

I want to make a table of elements such that when the cursor is over a target element, all other elements of the table sharing some specified common property with the target are highlighted (let's say ...
60 views

### How to rasterize a Graphics3D expression into an Image3D?

I'd like to make a 3d image from a 3d graphics. Unfortunately Rasterize@Graphics3D[Sphere[]] gives a 2d image, is there any function like a Rasterize3D that does ...
43 views

### Frontend of 10.2 Really Slow / Dropping Input

I just updated from 10.0.1 to 10.2 in the hopes that it would fix an infuriating intermittent crashing issue and the frontend seems top be way slower and sometimes freezes for about a second dropping ...
75 views

### Working with CDF Deployment

I've been working with FreeCDFs in Mathematica 10 and it has been going fine as long as I do not pull from a database or access local files. I recently purchased the Mathematica 10.2 Enterprise ...
27 views

### Error importing MBOX file

I am trying to import the mbox file generated by gmail. Using the Import command. ...
132 views

### Is it possible to speed up the user-defined function CAGDBezierSurface?

For given control net of points $P_{i,j}, \quad i=0,2, \cdots m, \quad j=0,2,\cdots, n$,the Bézier surface is defined by the following equation: ...
82 views

### Preventing a Print expression from generating a new cell each time it executed [duplicate]

In reference to the following code: Button["Start", Print[Plot[x^3, {x, -1, 1}]]] When I click on the button the first time, I get a plot of $y = x^3$, perfect. ...
82 views

### Converting the units of an equation or expression (how to become 3 times heavier…)

(THIS QUESTION HAD A MAJOR SIMPLIFICATION EDIT) Lets suppose I want to convert the falling body equation, from one set of units to another. I start with: ...
1k views

### Scraping High-Res images from the MoMA and the Van Gogh Museum websites

Many art websites allow the user to zoom into an image to see it at high resolution by using image tiles. It is great on the website, but presents problems if one wishes to compile a complete high ...
39 views

### How to do text recognition in a language that doesn't use the roman alphabet [closed]

I am trying to reconize a single letter or character from a non-roman character set by edge detection. I want to extract single characters from a text image. When I identify that letter or character I ...
34 views

### Assignment problem in Mathematica [duplicate]

Doing work ... v := {v1, v2} := {1, 2} ... I get that v is a vector of length two (and this is enough for me), but unfortunately in v1 and v2 are not assigned 1 and ...
61 views

### Working with functionals [closed]

I am trying to work with functionals in Mathematica, this means that I want to define a function of a function. I defined my function of a function as: ...
40 views

I work on a package for Mathematica which reads some binary data from a file. I use BinaryRead to read data from the file, but it looks like ...
66 views

### How to find the local minimum points in the multi-dimensional numerical data?

I am trying to get some local minima of an n-dimensional function (which only has numerical form). For two-dimensional function data, we can find the local minimum points from the contour plot easily. ...
29 views

### Front end responds slowly when writing

I have Mathematica 10.1 running on a Windows 7 laptop (i7 processor, 64-bit system with 4 GB Ram). The issue is that when I type in commands the letters build up very slowly on the screen. E.g. when I ...