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votes
0answers
549 views

Is there any way to export vector graphics with shading?

This has irked me for a while as I really feel its a significant shortfall in Mathematica's abilities but maybe I am missing something. I would like to export simple graphics with shading in a ...
15
votes
0answers
1k views

Circle with negative radius?

Bug introduced in 9.0 or earlier and fixed in 11.0.0 Why does this work: Graphics[{Circle[{0, 0}, -Pi/4]}] But this doesn't? ...
15
votes
0answers
227 views

Is Mathematica 10 color managed?

With ColorProfileData Mathematica 10 can handle device-dependent color spaces. However images with embedded color profiles, e.g. ...
15
votes
0answers
335 views

Strategies to find curves on messy data using FindCurvePath

I have a set of data points that correspond to roots of a transcendental equation with respect to a parameter (the abscissa) which, by the properties of the system, define continuous curves (might be ...
15
votes
0answers
223 views

Is there a convenient/automatic way of uploading a notebook into SE?

This post discusses how to streamline the other way - extracting code from a fragmented and longish SE answer but I imagine a two-way workflow like: Fashion an answer/question in an SE-templated ...
14
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0answers
209 views

Dynamic is significantly faster and more responsive with LinkSnooper

I noticed an absolutely bizarre behavior of Dynamic. A simple dynamic module with SynchronousUpdating -> False is ...
14
votes
0answers
315 views

New issue or new setting(s) of Goodness-of-Fit Tests in 11.3@student edition

Bug introduced in 11.3 or earlier and persisting through 11.3.0 or later Just before upgrading to 11.3.0 on last Friday, i was having p-value results from 11.2.0. Not worrying about upgrade may ...
14
votes
0answers
332 views

Where are my Cloud Credits going?

In less than a month I've used 5k cloud credits (half of my quota) and all I did was deploying a bunch of static notebooks with ...
14
votes
0answers
177 views

WordOrientation does not work in v11?

Bug introduced in 11.0.1 and fixed in 11.1 It seems that WordOrientation does not work in v11. The sample code ...
14
votes
0answers
459 views

Mathematica HPC on AWS vs. Azure

I am looking for advice on deploying Mathematica for HPC in an on-demand cloud environment. I occasionally have Mathematica projects that require parallel computing and large amounts of RAM. These ...
14
votes
0answers
428 views

Initial values in Manipulate are hijacked by existing global variable values

Is the following behaviour a bug? It's the same in all versions between 9.0-10.2.0. Let's try this simple Manipulate with the initial value of ...
14
votes
0answers
743 views

Implementation of Partial Least Squares (PLS)?

I'm looking for a PLS implementation for Wolfram Mathematica. I just can't seem to find any implementation for it - do you know one? In general, I'm a bit confused that there exist only so few third-...
14
votes
0answers
260 views

CDF Player - MMA9 - MMA10 oddities

I'm (slowly) building a WordPress site with some didactic simulation made with Mathematica. Users can run the simulations (on-line or off-line) with the free Wolfram CDF Player. One of the last ...
14
votes
0answers
652 views

PenaltyFunction Option in NMinimize

I am curious if anybody has some experience in using the built-in Option "PenaltyFunction" in any of the numerical optimization functions like NMinimize. According to the documentation the user ...
14
votes
0answers
322 views

Unexpected design of protection against dynamic content

Introduction/summary I was surprised by the (from my point of view limited) extent to which the user is defended against "potentially unsafe dynamic content" by default. Two things were unexpected ...
14
votes
0answers
466 views

Is it possible to regain Mathematica 5.2's palette input focus behaviour with version 8.0?

Between Mathematica 5.2 and later versions, there has been a change in determining which notebook gets the palette input focus, which leads to quite unfortunate behaviour if you use focus-follows-...
13
votes
0answers
165 views

Implementing Contextual Bandits in version 12

The multi-armed bandit problem (MAB) is a classic in Reinforcement learning. Now that mathematica version 12 finally has support for Reinforcement learning: Here's a nice "mnist example" for training ...
13
votes
0answers
265 views

Wolfram new products

Can someone elaborate on the products relating to Wolfram Cloud? They all seem the same. When I login to Wolfram Cloud there's: Wolfram One Wolfram Development Platform Wolfram Programming Lab ...
13
votes
0answers
195 views

Bug: Library functions from older versions of Mathematica may crash in Mathematica 11.1 and conversely

The following is a confirmed bug [CASE:3846875] that turned up in the prerelease 11.1.0 and is not solved in the official release. This is a small example. Execute the following commands in ...
13
votes
0answers
205 views

Bug? Numerical calculation error with FullSimplify and arbitrary precision

Bug introduced after 5.2, fixed in 8.0, reintroduced in 9.0 and persisting through 11.2 Is this a bug? If I do FullSimplify[n E^(0``10 n)] then it returns <...
13
votes
0answers
107 views

Why does MapAt unpack individual elements?

(In case this is version specific I am using Mathematica 10.1 under Windows.) While responding to Partition array without unpacking I noticed something about MapAt ...
13
votes
0answers
236 views

Tooltip/EventHandler misaligned with scaled graphics primitives they wrap

Bug introduced in 8.0 or earlier and persists through 11.3 It affects all event based wrappers for affected primitives. E.g. EventHandler. Which makes it a big ...
13
votes
0answers
129 views

Why does GreaterEqual take a long time to evaluate with arrays?

Take the following example: big = RandomReal[1, 10000000]; Head[big >= 0.66] // AbsoluteTiming (* {0.53489, GreaterEqual} *) Why does this take a long time ...
13
votes
0answers
460 views

Is there research about the Mathematica programming paradigm?

There seem to be lots of papers discussing the functional programming paradigm terminology for Haskell, such as monad, category theory, lambda calculus, *morphism, etc. People study concepts and ...
13
votes
0answers
271 views

Slow JoinAcross performance

Bug introduced in 10.3 I am using JoinAcross to combine two datasets, where the key is an Integer. ...
13
votes
0answers
137 views

TableDirections example produces an error message

Bug introduced in 10.0 and fixed in 10.3 Can anyone replicate this? In Mathematica 10.2 on Win 64: TableForm[{{a, b}, {c, d}, {e, f}}, TableDirections -> Row] ...
13
votes
0answers
432 views

Issues adding properties to multigraph

Bug persisting through 12.0 Unsupported Functionality (loosely, a bug) Mathematica (as of 11.0.1 for Mac OS X x86 (64-bit) (September 21, 2016)) does not support multi-graph where edge properties ...
13
votes
0answers
199 views

One less arrow vector than asked for

Bug introduced in 10.0.0 and persisting through 11.0.1 or later Consider the following code: ...
13
votes
0answers
679 views

Interpolation on an unstructured (mostly-structured) grid in 4D+

I frequently need to perform interpolations on an unstructured grid. Mostly, with the purpose of filling grid holes and then later continue with regular grid interpolations. Mathematica V9 and V10 ...
13
votes
0answers
920 views

How to export .mtl files for 3D textured objects

I would really like to deploy my textured 3D graphics in the web with sketchfab in my blog. Unfortunately, Mathematica only exports the shape of the 3d graphics, i.e. the .obj file, but omits the ...
13
votes
0answers
367 views

Can I use symbolic tensors for simple linear algebra and calculus?

As an example, I'd like to calculate this symbolic derivative: $\frac{\partial}{\partial b}(x-A.b)^{\mathsf{T}}.(x-A.b)$ where $x$ and $b$ are vectors and $A$ is a matrix. What I tried is this: <...
13
votes
0answers
4k views

Threads vs Cores: How many kernels need to launch in parallel Mathematica?

I have a dual-core intel machine. I would like to test how many parallel local kernels should be launch to get the optimized performance. Knowing that the HyperThreading technology of Intel could run ...
13
votes
0answers
303 views

Is there a way to teach integrate new solutions?

I have an integral which I can solve, but integrate cannot: ...
13
votes
0answers
494 views

Proving (self) similarity with Mathematica - Reccurrence Plots, Similarity Plots etc

I posted this question in math.se but given the sheer tumultuous number of questions that keep appearing on math.se and also given that I am trying to accomplish this in Mathematica, I thought I'd ...
12
votes
0answers
129 views

Scheduled tasks and dynamic updating

Here is an example: x = 0; Dynamic[x] now please run: SessionSubmit[x = 1; Pause[10];] Problems: Annoying one: ...
12
votes
0answers
127 views

Orderless breaks pattern match

Bug introduced in 10.3 or earlier and persisting through 12.0.0 10.0.2 is not affected. I am perplexed by the effect of Orderless on pattern matching. Starting ...
12
votes
0answers
103 views

What changed in String handling between 11.0 and 11.3?

I was trying to optimize some String-handling code here using my standard trick of converting it to a list of bytes first and using basic list operations instead of ...
12
votes
0answers
250 views

Is Tooltip broken in MMA 11.1.1?

Bug introduced in 11.1.0 and persisting through 11.2.0 I have just discovered that Tooltip works differently from as described in the documentation, at least in my ...
12
votes
0answers
188 views

Best Practices for Creating CDF e-textbook

I attended a talk given by Eric Schulz a few years ago. It was similar to his talk "Sharing Wisdom Gained from Publishing a CDF Ebook" given here. I am Math instructor and have been creating ...
12
votes
1answer
318 views

Factorize trigonometric matrices

Consider two square matrices $A_1$ and $A_2$. Consider the following matrix involving matrix trigonometric functions: \begin{equation} M_1(t)=\begin{bmatrix} \cos(tA_1) & t\mathrm{sinc}(t A_1) \\ ...
12
votes
0answers
884 views

Convert Mathematica graphics to TikZ?

Is there a package to convert Mathematica graphics to TikZ code (for inclusion in LaTeX source files)? Such a package, dated 2016-01-30, is described at http://library.wolfram.com/infocenter/...
12
votes
0answers
170 views

Is ExportString defective in V11?

Mathematica doesn't do the best job of exporting figures with shading or transparency to vector graphics formats such as PDF. A common trick employed here and elsewhere on the web to workaround this ...
12
votes
0answers
183 views

Is it possible to search the web by image from Mathematica?

Is it possible to perform a web search based on an image input? There are several services that provide this: Google, Bing, TinEye, and maybe others. I am not sure which can be accessed ...
12
votes
0answers
231 views

How do I determine which ChartElementDataFunction is Automatic?

In the course of exploring @kglr's answer to Edmund's question gain some insight into how I might answer my own question here, I came across the undocumented ...
12
votes
0answers
627 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 ...
12
votes
0answers
337 views

After editing a file Mathematica 10 interprets […]^2 as […(])^2

Bug introduced in 10.0 and persisting through 10.2 or later This is a very weird bug and I don't really know how to reproduce it, so I'll just copy-paste the whole code ...
12
votes
0answers
217 views

Autocomplete of non-global functions

In Mathematica 9 and 10 they added autocompletion. Out of the box this works great, but when I set the CellContext to "Notebook" ...
12
votes
0answers
740 views

How does Mathematica find a series expansion of expressions containing logarithms when there is a singularity at the expansion point?

I am looking for a good approximation to a function containing logarithms, especially at values close to zero. When I used Mathematica's Series command I found ...
12
votes
0answers
359 views

Simplify and Sqrt, inconsistent behavior?

I have encountered some problems when using Simplify with expressions containing a square root and isolated a following test case ...
12
votes
0answers
234 views

HorizontalGauge causes problem with ScalingFunctions -> “Log”

Bug introduced in 9.0.0 and persisting through 11.0.1 or later HorizontalGauge is new in 9.0.0 I am trying to use ...

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