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33

votes

3

answers

1k

views

Interrogating a running evaluation

evaluation debugging

modified Jul 24 at 6:03 Kuba♦ 98.8k

14

votes

8

answers

2k

views

Find longest sequence of zeros in list

list-manipulation

modified Aug 4 at 10:17 jkuczm 12.2k

6

votes

5

answers

265

views

Does Mathematica have a twin prime equivalent of `PrimePi`?

plotting functions prime-numbers

modified Aug 1 at 20:29 Chip Hurst 18.7k

5

votes

4

answers

226

views

Replacing a specific combination in a list

list-manipulation replacement

modified Jul 20 at 16:33 kglr 154k

7

votes

1

answer

2k

views

Why can't Mathematica draw a consistent mesh on a torus?

graphics3d

modified Jul 31 at 19:50 edgeloss 186

6

votes

2

answers

510

views

Confusing behavior when passing a variable vs. inlining a function call

variable-definitions

answered Aug 2 at 0:29 Carl Woll 53k

11

votes

3

answers

296

views

StringContainsQ And

pattern-matching string-manipulation

modified Jul 18 at 22:20 Henrik Schumacher 33.1k

9

votes

3

answers

178

views

RegionMember[ ] in polygon

bugs regions computational-geometry polygons

modified Aug 6 at 22:39 Joseph O'Rourke 2,275

7

votes

2

answers

337

views

How to “rationalize” a fraction in Mathematica

simplifying-expressions

modified Aug 4 at 13:47 Chip Hurst 18.7k

9

votes

2

answers

583

views

How to check whether the folder is created, and if not, create it?

files-and-directories

answered Aug 3 at 20:35 WReach 51.4k

8

votes

4

answers

267

views

Replace diagonal elements in sparse matrix

performance-tuning sparse-arrays

modified Jul 21 at 0:06 kglr 154k

6

votes

4

answers

331

views

Replacing all constant factors in expressions by +1

replacement

answered Jul 20 at 7:00 Mr.Wizard♦ 226k

5

votes

5

answers

352

views

Vector operation on datasets

list-manipulation dataset

answered Jul 19 at 23:51 Edmund 24.2k

7

votes

3

answers

202

views

Outer with non-diagonal elements

list-manipulation

modified Aug 10 at 19:33 bill s 50k

7

votes

3

answers

268

views

DFT for Helium atom

differential-equations performance-tuning physics chemistry

modified Aug 2 at 4:51 Niels 76

6

votes

5

answers

218

views

First evaluate in place all subexpressions matching pattern before substituting result

function-construction replacement expression-manipulation built-in-symbols

modified Jul 29 at 21:30 rhermans 21.3k

5

votes

2

answers

538

views

How can I find a more efficient solution to mapping characters to digits?

performance-tuning functional-style

modified 10 hours ago tjm167us 472

12

votes

2

answers

376

views

Processing images from NASA's Juno Jupiter Orbiter

image-processing image signal-processing astronomy

modified Aug 4 at 2:35 theorist 908

7

votes

4

answers

211

views

Deleting list elements by comparing to another list

list-manipulation filtering

modified 2 days ago Carl Woll 53k

3

votes

3

answers

157

views

InverseFunction fails to invert $e^{-x/2}-e^{x/2}$

equation-solving functions inverse

answered Jul 22 at 3:49 Jens 86.1k

8

votes

3

answers

218

views

How to force TeXForm not to use “array” environment for a square array?

latex

answered Jul 27 at 3:31 Carl Woll 53k

4

votes

3

answers

315

views

How to display a finer sphere in Graphics3D?

plotting graphics3d

answered Aug 9 at 1:30 wxffles 11.4k

7

votes

3

answers

346

views

How to obtain a subset (of a 2-d set of points with random coordinates) having monotonically increasing ordinates

list-manipulation

modified Jul 30 at 8:43 kglr 154k

7

votes

3

answers

314

views

Gathering a List efficiently

list-manipulation

modified Jul 27 at 13:02 rhermans 21.3k

4

votes

3

answers

171

views

Deleting specific elements in a list when they come together

list-manipulation

modified Aug 9 at 21:43 Mr.Wizard♦ 226k

4

votes

2

answers

412

views

Working with a random variable in an equation

probability-or-statistics

answered Jul 16 at 13:27 Szabolcs 151k

5

votes

4

answers

154

views

Constructing higher order transition probability matrix

list-manipulation matrix markov-chains markov-process

modified Aug 8 at 21:13 Henrik Schumacher 33.1k

6

votes

4

answers

103

views

Suppress trailing 0s in numerical values

numerics output-formatting numerical-value

modified Aug 5 at 0:20 Mr.Wizard♦ 226k

4

votes

3

answers

246

views

Can I use ListDeconvolve or any other functions to get the original kernel?

data-structures coefficientlist

answered Jul 23 at 15:27 Bob Hanlon 54.9k

6

votes

2

answers

175

views

Select UPPER CASE list items with spaces and punctuation

list-manipulation string-manipulation filtering

modified Jul 20 at 10:33 user1066 5,808

6

votes

3

answers

174

views

How to change the color of the background of an image?

image-processing color image

modified Jul 28 at 6:27 Coolwater 13.4k

6

votes

1

answer

284

views

Why is SVM unable to separate linearly separable data?

plotting graphics3d machine-learning algorithm svm

modified Aug 11 at 10:31 Niki Estner 29.5k

4

votes

3

answers

325

views

How do I create a random point on the surface of a cube? [on hold]

graphics3d random-process

modified Aug 10 at 22:03 David G. Stork 20.8k

5

votes

1

answer

373

views

Random walk in one dimension — meeting of two particles

random simulation

modified Jul 29 at 15:24 m_goldberg 81.3k

4

votes

3

answers

495

views

Writing System of Equations == 0

equation-solving calculus-and-analysis algebraic-manipulation

answered Jul 15 at 21:50 Bob Hanlon 54.9k

13

votes

1

answer

136

views

What happened to SequenceLimit?

numerics compatibility history

modified Jul 19 at 18:04 Chris Chiasson 1,300

6

votes

4

answers

121

views

Combining LineLegend and BarLegend in CountourPlot

plotting legending

answered Aug 7 at 17:11 Brett Champion 16.8k

5

votes

2

answers

254

views

Replace values in sparse matrix

matrix performance-tuning sparse-arrays

modified Aug 1 at 12:09 kglr 154k

7

votes

3

answers

82

views

Find positions of certain value in a big boolean list

list-manipulation performance-tuning boolean-computation

modified Aug 10 at 11:06 kglr 154k

2

votes

2

answers

131

views

How to numerically solve the Schrödinger equation for Lennard-Jones potential?

differential-equations physics eigenvalues

answered Jul 19 at 20:07 b3m2a1 23.4k

3

votes

3

answers

128

views

How eliminate { } in an arbitrary order in subgroup of a nested matrix

list-manipulation matrix

answered Aug 8 at 6:06 kglr 154k

6

votes

2

answers

162

views

Voigt notation in Mathematica

tensors

modified Jul 20 at 22:03 kglr 154k

6

votes

3

answers

198

views

Generate a random pattern with at-most n repeated consecutive elements

list-manipulation random

modified Jul 28 at 14:22 kglr 154k

7

votes

3

answers

153

views

How to automatically define a time dependent array of a given dimension in mathematica

differential-equations

modified Jul 19 at 12:14 kglr 154k

2

votes

4

answers

117

views

Plot with different colors the results of an NDSolve with vector solution

plotting differential-equations interpolation plot-themes

answered Jul 30 at 20:06 Carl Woll 53k

2

votes

3

answers

235

views

How can I remove the FindRoot error from my calculations?

plotting equation-solving precision

modified Jul 24 at 13:47 Mr.Wizard♦ 226k

4

votes

2

answers

230

views

Handling arrays

matrix vector array

modified Aug 1 at 6:52 kglr 154k

7

votes

1

answer

137

views

Simulating a partial differential equation - reaction-diffusion systems and Turing patterns

plotting differential-equations ecology

modified Jul 19 at 3:23 Chris K 5,412

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