Linked Questions

26
votes
2answers
514 views

Version inconsistency with optional arguments: what if the default value doesn't match the pattern?

I just came across some weird behaviour. Take this function definition: ClearAll[f] f[vs_List : All] := "match" The default value of ...
19
votes
2answers
453 views

PlotLegends won't generate automatically more than 15 labels in v10

Update: NOT fixed in V10.0 - 12.0.0 While testing the examples from this recent post, i've noticed a problem in V.10 with PlotLegends when it has to automatically ...
11
votes
2answers
348 views

Catching MachineUnderflow in Version 11.3

Ilian's answer to question 72229, involves SetSystemOptions["CatchMachineUnderflow" -> False] Evidently, this worked in earlier versions of Mathematica, but ...
53
votes
2answers
2k views

What are SparseArray Properties? How and when should they be used?

A strange undocumented form of SparseArray is increasingly used in answers on this site: ...
0
votes
1answer
110 views

Mathematica 12 compatibility with earlier versions under macOS 10.15 Catalina [closed]

I currently run the following: Mathematica 10.3.0.0 on a Mac Pro (Late 2013)running macOS Mojave Version 10.14.6. I want to upgrade the OS to macOS 10.15 Catalina. To do so, I understand that ...
18
votes
1answer
709 views

How to add named characters to Mathematica 10 or later?

Any news regarding this for Mathematica 12? It appears that native support for the Klingon alphabet has been removed from version 10: \[KlingonA] Syntax::...
7
votes
1answer
135 views

Stabilized Inverted Pendulum Blog Post Broken in 12.0?

One of the old Wolfram blog posts that I use frequently is this demonstration of the LQR gains computation. https://blog.wolfram.com/2011/01/19/stabilized-inverted-pendulum/ I've been able to trust ...
1
vote
1answer
98 views

Problem with “MediaTools`” in Mathematica 12

I asked here for a solution how single video images can be extracted very fast from avi files. Piotr Wendykier gave a solution for Mathematica 11.3. Now I'm using Mathematica 12 and his solution ...
14
votes
2answers
908 views

Precise cropping with ImageCrop

Bug introduced in 8 or earlier and persisting through 12.0 or later Reported to the support as [CASE:3968587]. Published on Wolfram Community. In the presence of alpha channel ...
5
votes
1answer
68 views

MatrixConditionNumber does not work in version 12.0

A = {{1., 0.}, {0., 2.}}; LinearAlgebra`MatrixConditionNumber[A]
2
votes
2answers
95 views

Plotting with Precision

Suppose we plot Plot[ Exp[x]Exp[-x], {x,0,1000} ] This equals 1, as expected, until around x = 750 where the curve drops sharply to 0. Clearly this is due to ...
20
votes
0answers
276 views

Breaking change of Total in Mathematica 12.0?

Total has been changed in Mathematica 12.0. The documentation seems to contradict itself. In one line it states: Total[ $f[ e_1,e_2,...]$ ] gives the sum of the $e_i$ for any head $f$ In the next ...
18
votes
2answers
289 views

Why this weird return value from `N`?

Bug introduced in 11.3 and fixed in 12.0. Why does N just return the exact number below? I want a 2000 digit approximation... ...
1
vote
1answer
126 views

Solving system of differential equations in loop with recursive variable

Backslide introduced in 11.3, fixed in 12.0. I've been posting various questions about similar pieces of code all year, so if this looks familiar you may have seen another one of my posts, but this ...
51
votes
3answers
783 views

What bug fixes can be implemented in init.m?

In comments on this question, Mr. Wizard suggested a community wiki to share the bug fixes/workarounds (or possibly other tricks) people load in their init.m. I ...

15 30 50 per page
1
2 3 4 5