# All Questions

229 views

### Incorrect Display on Linux (+HiDPI)

I have Linux on a HiDPI laptop, and after first installing Mathematica, the default font size is far too small: After searching for a few solutions, this can be fixed by either changing the ...
306 views

### Module inside of Manipulate Example

Here is a very nice example from The Student's Introduction to MATHEMATICA. ...
69 views

### Is this behaviour, producing OutputSizeLimitDumpencapsulateOutput, a bug?

Bug introduced in 6.0.0 and persisting through 10.2.0 The input ...
94 views

### Problem Using Evaluated Replace with Associations

If I define some function like: toISOdate[data_List]:=DateString[data,{"Year","-","Month","-","Day"}] and try to applicate it in an ...
49 views

### Change Property without re-evaluating [duplicate]

I am working with ContourPlot3D, and my expression takes a long time to evaluate (nearly 20 minutes). So I am wondering if there is a method to changing format ...
66 views

### DynamicModule's Deinitialization & CDFDeploy

This evaluates fine for me: CDFDeploy["test.cdf", DynamicModule[{}, Dynamic["Hello World"], Deinitialization :> 1]] But this results in a never ending ...
66 views

### How to produce timely spoken text?

On my system (Mac OSX 10.10.4) the following code produces only the first utterance. The second one is produce when the user interacts in some way with the front end (mouseover, mouseclick). How can I ...
86 views

### Override a PlotTheme element at the Options level?

Edit: I am still using version 10.1; has anything changed by 10.4.1? Plot properties defined in a Theme override (supersede) properties defined on Options. This ...
252 views

### How to imitate list comprehensions for constant arrays?

In Python, ['a'] * 10 generates ['a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a', 'a'] and ...
281 views

### How to make a Nebulabrot?

A Nebulabrot is a generalization of the Buddhabrot, a fractal rendering technique related to the Mandelbrot set that sort of looks like a meditating buddha. The Buddhabrot rendering technique was ...
78 views

### How can I adjust the global input variable of a function to the value of a local variable within the function

I am trying to define a function f[l_] that will perform an operation on whatever input variable I use (normally I use l which ...
111 views

### How to write a loop

I try to create a table which will describe traffic paths at a crossroads. Instead of using copy-paste repeatedly, I would like to write a loop. For example: ...
83 views

### How to segment letters and text blobs?

This new article from Google research describes how their Translate app preprocesses an image on a phone before applying convnets: It needs to weed out background objects like trees or cars, and ...
61 views

### Inputting values into the variables without having to input the matrix all over again

I'm practicing using LU decomposition on Mathematica. I am able to find the L & U matrices, specifically the variables. However, i find it tedious having to input the newly found values and form ...
119 views

I have ...
312 views

### How to monitor the progress of training a classifier?

I've had p = Predict[x -> y] running for hours and I have now idea if I should kill it or not. I'm looking for some rough bounds for an estimate of how long <...
101 views

### What can I use as an equivalent of python zip in mathematica inside of Sum[]? [closed]

I want to take two lists of the same length: widths and weights, and sum a function (of 3 variables) over a single index using the elements from both lists that have that index. Then I want to plot ...
90 views

### What am I missing in this highly oscillatory integral?

I want to numerically integrate this equation (in python without calling Mathematica): $\int_0^\infty {\rm d}k f(k) J_v(r k) J_n(s k)$ where $f(k)$ is a non-smooth function, $J_v$ are the Bessel ...
55 views

### How to define a function deriv[f[x]] such that its output is an unevaluated expression fx=D[f[x],x]?

I want to define a function deriv[f_[x_]] such that when I run deriv[f[x]], the output is an unevaluated expression ...
62 views

### Error Resulting from Placing a Dynamic Variable inside of Table

I want to create a list of values, True or False, and to update those values with a Checkbox....
72 views

### Where's the service status page for Programming Cloud?

I've searched wolframcloud.com and found none. It would be good to know, because I am getting a range of apparently random failures from "Tag List ... is Protected" to "possible crash" (!) to "Cloud ...
337 views

### Eisenstein Series in Mathematica?

Mathematica doesn't seem to have built-in tools to deal with the Eisenstein series: \begin{align*} E_{2}(\tau)&= 1-24 \sum_{n=1}^{\infty} \frac{n e^{2 \pi i n \tau}}{1-e^{2 \pi i n \tau}}\\ E_{...
350 views

### Part of an Image cut/lost when exported to EPS file

When making .EPS image files for publication, I tried to assemble several Graphics by Grid. For example, suppose I have: ...
510 views

### How can I change the thickness of tick marks in BarLegend?

Bug introduced in 10.1 or earlier and persisting through 10.4.1.0 or later This answer explains how to change various undocumented options for BarLegend with <...
70 views

### Count participation of variable list

I have the directed edges of a graph given by a list of variable (vertex) pairs. ...
124 views

### Tracking features where ImageFeatureTrack finds none?

How is it possible to track common features in the following sequence of images (e.g. holes or corner points along the top margin), ? I have had no luck with ...
99 views

### How to define UpValues of NBSpline when the length of argument is unknown?

I mimic the built-in BSplineBasis[] to build a user-defined function NBSpline[], Namely, ...
59 views

### Exported CDF file does not include GeoGraphics [duplicate]

I'm trying to display a map on manipulate and the case is .nb files shows it but when I export it to .cdf this format not show the GeoGraphics map ...
63 views

### How to extract part of association?

Considering an association: asc = <|"a"->1, "b"->2, "c"-><|"e"->3, "c"->4|>, "d"->5, "e"->6, "f"-><|"g"->7|>|> How ...
58 views

### A book or tutorial/guide for “Systems Interfaces & Deployment”

I'm looking for a complete guide (call it a book, tutorial, guide or whatever) about some programming topics which are not enough covered by Mathematica Documentation Center, in my opinion. Topics ...
127 views

### Convert .csv Dataset and store in Databin [closed]

Trying out the new Databin product in the Wolfram Cloud. I have a simple ,-delimited .csv file with a header row which I have imported using the follwing: ...
5k views

Can users of Mathematica on Windows 7 or Windows 8/8.1 upgrade their computers to Windows 10 – a process that began today? Does Mathematica work? Are all the settings, licenses, access to files and ...
72 views

### How to disqualify a rule [closed]

Executing this line Assuming[x < 0, x -> 10] Expected output: False Say x -> 10 is a root of a polynomial ...
143 views

### Random variable within Manipulate: how to make it independent on other controls

The code sample: ...
205 views

### How to increase the thickness of the edge in a random image

This is a Voronoi Diagram. I really want to know how to change the thickness of the "wall" of each V-cell, in another words, the thickness of the edge in this diagram.
241 views

### List all “duplicate” elements in Tally

Tally[list,test] can use a custom function test to judge if elements are equal. But the output will only give the first element ...
37 views

### RegionPlot generates unwanted mesh lines [duplicate]

Consider this example: ...
98 views

### Usage of StringTemplate

The documentation for StringTemplate has the following example ...
79 views

### Plot a circle and create a 3-D revolution plot out of it

If I have the equation (x-2)^2 + (y-2)^2 == 1 I can use a ContourPlot, however am having trouble changing the axes origin. I ...
124 views

### ImplicitRegion gives arbitrary boundaries

This question uses Mathematica 10.2.0.0. equation1 is the major unbounded region I would like to generate: ...
115 views

What I did: ...
71 views

### Confusion over blank sequence in pattern matching

My overall goal was to produce a list of heads used in a graphics output. For an example I used: ...
302 views

What I did: ...
34 views

### How to use function, NIntegrate, FindRoot together? [duplicate]

Using a function in NIntegrate works fine... ...
157 views

What I did: ...
449 views

### Prevent 10.2 from creating “Wolfram Mathematica” directory on Linux

Since upgrading to version 10.2.0.0, every time I start the Mathematica front-end it creates a "Wolfram Mathematica" directory under my home directory. (It never seems to put anything in it.) Anybody ...
114 views

What I did: ...
79 views

### Fishing for monomials in a nested or partially factored polynomial stream

I have a problem where I'd like to be able to take a multivariate polynomial whose variables are nonscalar and is not written explicitly as a sum of it's nonzero monomial terms and determine which ...