# All Questions

9,347 questions with no upvoted or accepted answers
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119 views

### How to suppress the escape window?

Cross posted here If we first enter an empty string (""), and then paste something within the quotation marks, the following dialog box will pop up: I recorded a ...
99 views

### Probable bug in Export(String) and “String” format

Bug introduced in 6.0 and persisting through 11.0.0 or later ...
113 views

### Fast Destructuring

This might be a XY problem. I first post my immediate question and some background below. Question: What's the fastest way to pass arguments matching ...
125 views

### Performance improvements by using Activate and Inactivate

In a question about improving performance of a TensorContract of a TensorProduct, user jose suggested replacing ...
121 views

### What governs how Mathematica selects the appropriate format for an Import?

Under Mathematica 11, I have cobbled together an Import Converter that is able to handle simple cases of Apple Mail emlx files. I did this because, without the Importer, emlx files are imported ...
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### How to label vertices on a mesh with user defined values?

I am trying to write a code to estimate geometric properties (i.e. Mean Curvature, Gaussian Curvature, Principle Curvatures) on a triangulated mesh. I would like to save the calculated data as a set ...
213 views

### Why would killing the kernel defreeze/unhang the front end?

My Mathematica front end will freeze occasionally for unreproducible reasons. This seems mostly associated with long (> 1 hour) computations, although not exclusively. If I click on the Mathematica ...
545 views

### benchmark of Mathematica's FEM?

Does anyone have any numbers on how mathematica compares to other commercial (eg ANSYS) or free FEM softwares (eg. FreeFEM++, FEniCS, elmer)? If this is too vague say solving the diffusion equation in ...
116 views

### How to setup logging levels?

I was wondering what tools exist out there for doing logging in Mathematica? The Echo functions is nice, but I'd like to set various severity levels and other ...
132 views

### LinearProgramming returns an invalid null solution that apparently doesn't satisfy constraints without any warning

Bug introduced in 9.0 or earlier and persisting through 11.0.1 or later While searching to answer the question Solving the magic backyard puzzle with MMA at some time I composed a set of arguments ...
212 views

### What are the time and space complexities of Classify/Predict?

Does anyone have knowledge of the O(n) time & space complexities for various model types supported by Classify[] and ...
274 views

### Wolfram Data Framework specification?

Motivated by a recent question on the meaning of all sorts of W* acronyms, I would like to get more information about the Wolfram Data Framework (WDF). On its web page http://www.wolfram.com/data-...
235 views

### Call Magma in Mathematica

I've written some code in Mathematica, related to some group theory questions I have. Subsequently, I found that part of the code could be significantly sped up if I could just call a routine in ...
285 views

### How can I add column-rearrangement-by-mouse-dragging to my dataset display function?

A subject that I seem to take at heart... I was expecting an upgrade of the default Dataset display in MMA 10.3.1. It did not happen. Among the features I would have liked to see improved is a better/...
225 views

### ListDensityPlot3D does not antialias axes

I sent a bug-report to Wolfram and the case number is [CASE:3454878] I'm on Linux with Mathematica 10.3 and I have my 3D graphics output set to the highest "Antialiasing Quality". It works fine for <...
494 views

### Mathematica Courses or Bootcamps?

Related questions and link: Do you know of any web-based university course that is entirely Mathematica based? What is the best Mathematica tutorial for young people? http://www.wolfram.com/...
165 views

### Does Compilation option “InlineExternalDefinitions”/“InlineCompiledFunctions” lead to unnecessarily complicated nesting?

Question: When an external (possibly complicated) definition f is used inside a compiled function with ...
625 views

### Image Processing: Car front detection

Background Image processing can be applied to car license plate detection problems see Wikipedia, segmenting numbers, belisarius's old answer. Also, on this site once can use some techniques ...
151 views

### Strange result of DeleteCases in an association

Bug introduced in 10.1.0 and fixed in 10.3.1 The function DeleteCases can be used for associations, also with level specification. Here is an example where some ...
358 views

### Make the map of rivers and lakes of the country

As I understand,first of all I should to get the country's map and the river's list. To get country map is simple: ...
324 views

### Built-in symbols which are more close to the root/core of Wolfram Language

Seeing the vast scope of science covered by the Wolfram Language (WL) and the large amount of built-in symbols (functions), I am curious to know which built-in symbols are more close to the root of WL,...
160 views

### Wrong Cashflow of Annuity with initial payment

Bug intoduced in (8.0?) persisting through version 11.0.1 If we use TimeValue to look at the PV of an Annuity with initial ...
161 views

### Is there a documentation generator for Mathematica?

I'm looking for a way to document the functions of my packages inline, preferably inside comments. There should be a Doxygen type tool for this that takes comments and that generates html from markup ...
626 views

### Configuring remote access when using a VPN

To address some of the responsiveness issues, I use the Mathematica front end (v9 or v10) to access a remote kernel on a Raspberry Pi. The (advanced) kernel configuration used is this: Arguments to ...
213 views

176 views

### Proper Syntax highlighting for multi-argument With?

For the case of Block and Module one can choose to define values in the body for the variable names being scoped. So there is no ...
167 views

### Guide to capturing the complete image of given urls?

I'm trying to use WebImage[] to capture the complete image of a website (yes, it might be very tall). I seem to be having some issues with it: How to attempt to capture a complete image of the ...
64 views

### Order of PolygonCoordinates[] is undefined in Mathematica 12?

Probably I am missing something fundamental. I try to get a polygon's ordered coordinates, but PolygonCoordinates[] yields something pretty unordered. Am I missing some essential function? ...
167 views

### The most bizarre kernel crash ever. Kernel crash in Integrate under simple different setups. Unable to find cause

Reported to WRI. CASE:4330461 V 12 on windows 10 64 bit. Note: This problem do not show up in V 11.3. Only in V12. For the last 2 hrs, I've been trying to zoom into why V12 kernel crash when ...
71 views

Bug introduced in 10.0 or earlier and fixed in 12.1 M10.0.2 and M10.3 return a wrong result without errors. M11.0 and M12.0 issue a flood of messages and sometimes crash. I am using Mathematica 12.0, ...
294 views

### DEigenvalues and NDEigenvalues return different values

In the following example, DEigenvalues and NDEigenvalues return different results despite having identical arguments. Does anyone know why? (I use Mathematica 11.3) ...
73 views

### Design Patterns for System Functions?

Using PrintDefinitions give one a great view into many system functions. Often the design of these symbols incorporate multiple patterns that I see again and again. ...
299 views

### What are the features that are only available in Wolfram Finance Platform?

Looking at the Wolfram Finance Platform advertising page. They seem to have features that are all available in standard Mathematica license. So what is the exact difference between the two? Their ...
159 views

### Is anything missing from Wolfram Development Platform?

I wanted a license for Mathematica that allows commercial use (as a single user). After doing an awful lot of reading at the Wolfram website, I decided to purchase the Developer license for Wolfram ...
262 views

### EMF Export Bug in v12

Bug introduced in 12.0 or earlier For some reason EMF vector image export deteriorates with every version. In v12.0 for Windows create a simple BarChart: ...
128 views

### StableMarriage vs. FindIndependendEdgeSet: How to use the procedure FindIndependendEdgeSet as a Gale-Shapley algorithm?

From Help, the procedure StableMarriage was an element of the Combinatorica, but it is available in the built-in ...
115 views

### Performance warning using TakeList and All on big lists

According to Mathematica's own documentation, TakeList can operate with lists containing All. For example: ...
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### Slow down training many neural networks (Bug?)

I am working on something in which I need to train a neural network many times with slightly different training data. I noticed that after many training runs the input rate had dropped significantly. ...
50 views

### Styles inheritance stack for elements of a Graphics/GraphicsBox

You can skip to the bottom if you only care about the question. My original goal was to control FrameLabel color from a notebook level opposed to doing it ...
49 views

### Thermometer Gauge with ScalingFunctions Broken?

Is this broken? The following generates an error: ThermometerGauge[Dynamic[t], {1, 100}, ScalingFunctions -> "Log10"]