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 ...
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 ...
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 ...
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: ...
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 ...
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::...
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 ...
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 ...
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 ...
68 views

### MatrixConditionNumber does not work in version 12.0

A = {{1., 0.}, {0., 2.}}; LinearAlgebraMatrixConditionNumber[A]
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 ...
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 ...
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... ...