All Questions
13,811
questions with no upvoted or accepted answers
13
votes
0
answers
154
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 ...
- 4,591
13
votes
0
answers
584
views
Create vtk file of ParaView from Mathematica [FEM post-processing]
I'm doing FEM in Mathematica and want to visualize the results in Paraview (e.g., create a video of the displacement field). Now I have the element mesh, the displacement and stress fields. How can I ...
- 615
13
votes
0
answers
1k
views
What algorithm is Mathematica using to find the smallest eigenvalue so quickly?
My question is what kind of black magic is Mathematica doing to obtain the correct answer so quickly compared to other programming languages?
Details:
I've written a Mathematica notebook to find the ...
- 131
13
votes
0
answers
371
views
How can I disable system updates only?
Suppose I'm quite happy with my current Mathematica installation and wish to keep the system in its current form just reliably working.
Since there were already at least two cases[1,2] when a lot of ...
- 62k
13
votes
0
answers
343
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
0
answers
226
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 ...
- 10.2k
13
votes
0
answers
258
views
Tooltip/EventHandler misaligned with scaled graphics primitives they wrap
Bug introduced in 8.0 or earlier and persists through 12.2
It affects all event based wrappers for affected primitives. E.g. EventHandler. Which makes it a big ...
Kuba♦
- 137k
13
votes
0
answers
168
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 ...
- 236k
13
votes
0
answers
560
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 ...
- 1,191
13
votes
0
answers
288
views
Slow JoinAcross performance
Bug introduced in 10.3
I am using JoinAcross to combine two datasets, where the key is an Integer.
...
- 4,426
13
votes
0
answers
147
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]
...
- 13.8k
13
votes
0
answers
788
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 ...
- 1,037
13
votes
0
answers
1k
views
ParallelTable kernels die - maybe Mathlink timeout?
I am new to parallel computing in Mathematica. I am using
LaunchKernels[16]
ParallelTable[]
to parallelize calculations. The ParallelTable consists of approx ...
- 665
13
votes
0
answers
953
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 ...
- 7,713
13
votes
0
answers
284
views
HorizontalGauge causes problem with ScalingFunctions -> "Log"
Bug introduced in 9.0.0 and persisting through 12.2.0 or later
HorizontalGauge is new in 9.0.0
I am trying to use ...
- 2,055