# All Questions

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 ...
30 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 ...
55 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 ...
34 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 ...
108 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. ...
34 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 ...
52 views

### Strange behavior: Cannot import data as MP3 format anymore

I am having the strangest problem since a day: Mathematica is no longer (after a reinstall) able to import MP3 files. I think these details should not be relevant, but they are all there are: It ...
61 views

### Running a function with manipulators in a popup window [closed]

I have a function, pasted at the bottom, which I would like to encapsulate into a function that can be called, and the program would then run in a popup window, return the values energy, peaklocation ...
293 views

### converting Matlab program to Mathematica code

I have the following Matlab program; ...
46 views

### Explicitly find a guaranteed factorization of large expression?

Consider the large expression LE defined in this file (involving only linearly independent functions), or in this file (linear interdependence present but slightly ...
43 views

### Update an application on the click of a Button

I am finishing my first program in Wolfram Mathematica 10 and if I have almost completed is essentially thanks to this valuable forum soon where I will try to help too. Basically, now I have this ...
95 views

### ODE of an eccentric circle

How can we simplify the solution in: DSolve[ {Sqrt[ 1 - (r[t] - T^2/r[t])^2/(2 a)^2]/(r[t] - T^2/r[t])/(2 a) == r'[t]/ r[t], r[0] == T}, r, t] (r,t) are polar ...
65 views

### How to specify different colors for edges going between the same two vertices in Graph?

Here is an example: edge1 = Property[1 -> 2, EdgeStyle -> Red]; edge2 = Property[1 -> 2, EdgeStyle -> Blue]; Graph[{edge1, edge2}] This does not ...
71 views

### how to use filling in Graphic plots

i'm going to plot some angles in Trigonometric circle by using Graphic command how can i use filling axes by different colors in this program or color between the angles? ...
62 views

### Condition on Inside of Region

How do I handle boundary conditions present in the region. Mathematica complains about the condition v [1 , t ] == u [1,t]. The condition should be given to this ...
58 views

### How can I remove I a horizontal line I inserted into my notebook?

Inserted a horizontal line with Right click > Insert > Thin Horizontal Line. Cannot see a way to remove such a line. Help!
125 views

### Reading a HDF file im Mathematica

Bug introduced in 8.0 or earlier and persisting though 10.2 On OS X, the problem is present in 9.0 but not in 10.0, 10.1 or 10.2. I am trying to read a HDF file in Mathematica 9 on OS X and get ...
133 views

### Inconsistent units? [closed]

I have reviewed this statement until my eyes hurt; can someone tell me why the units output aren't lb/ft^2? ...
63 views

### Getting Boston Marathon Data [duplicate]

I am trying to use Mathematica to analyze the data given by the Boston Marathon concerning running time, etc. The website http://registration.baa.org/2015/cf/Public/iframe_ResultsSearch.cfm gives a ...
35 views

### Replace function with multiple functions while respecting the inputs

I want to replace a function with either one or two functions and also combine their arguments. Say I have an original expression expr = u[i + 1] r[i] r[i-1] ...
112 views

### Scatter plot with smooth lines [closed]

I have two lists of data between which there may be some functional dependence. I want to plot one against the other (hence scattered plot) where the points are connected by smooth lines. In ...
124 views

### Postprocessing of CFD results in Mathematica

I was trying to perform computational fluid dynamics (CFD) post-processing in Mathematica after solving primitive variables from Navier-Stokes equation, mainly $(u,v)$, $(Px,Py)$. Since I am not an ...
193 views

### Strange behavior with Cases and Position with SetDelayed

I feel like I must be missing something simple and obvious here, but this has me scratching my head. This works as expected: ...
59 views

### Plotting data from an interpolation [closed]

I have this program f = Interpolation[arw, InterpolationOrder -> 1]; Do[wx = Random[Real, {0, 1.5695}]; fwx = f[wx]; Print[fwx, " ", wx], {1000}] I want to ...
36 views

### Pressing a Button aborts the evaluation [duplicate]

I'm doing a program in Mathematica 10 and I need to use different buttons like Button["Start", Module[{}, 'routine']] It all works wonderfully when the routine ...