Questions tagged [undocumented]
Questions on undocumented functionality of Mathematica. Note that such functions might be subject to change without notice in future versions.
329
questions
5
votes
1
answer
87
views
Custom Graphics primitives can't work with parallel Rasterize
I tried to create Graphics primitives using the techniques in this, found problems with parallel rasterization
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- 5,662
2
votes
0
answers
145
views
What is the usage of other "*Block" and "With*"? [closed]
There exist some "kernel functions" that are related to the built-in scoping constructs: Assumptions`AssumptionsBlock, ...
- 505
5
votes
2
answers
289
views
What do the arguments of a generated BSplineFunction mean?
For example, if we evaluate this:
BSplineFunction@{{0,100},{200,50},{200,0}}
we'll get
...
- 3,740
6
votes
1
answer
129
views
"Information about the undocumented function Internal`DiracGammaMatrix"
Searching for information on undocumented functions here, I found that there are no references about the use of the undocumented function Internal`DiracGammaMatrix.
Does anyone in the community have ...
- 27.8k
11
votes
0
answers
131
views
Eliminate variable with partially documented Solve feature Solve[eqns,vars,elims]. Robust?
The Eliminating Variables section on Manipulating Equations and Inequalities documentation quotes an otherwise undocumented feature for Solve
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- 36.9k
6
votes
1
answer
161
views
Understanding NDSolve::ndmmc
When running NDSolve with Method->{"EquationSimplification" -> "MassMatrix"} I frequently encounter ...
- 547
1
vote
1
answer
190
views
Trapezoidal method for ODE results in cmsing warning
I try to solve an ODE using the trapezoidal method. I do the following (Definition of Trapezoidal is from this answer):
...
- 605
7
votes
1
answer
87
views
How do I include additional kinds of boxes that are Tab-selectable
Observe that "PlaceHolder" and InputFieldBox are known by the FE to respond to pressing the Tab key:
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- 19.7k
4
votes
0
answers
83
views
Is there more complete documentation of DSolve with all hacks?
I know DSolve. I know this community and I am able to gather some hacks.
There is this:
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- 4,098
5
votes
3
answers
237
views
$Assumptions = _ ∈ Reals results in incorrect simplification of ConjugateTranspose[..]
The linear combination $Q$ of two Hermitian matrices $A^\dagger = A, B^\dagger = B$ with real coefficients $m,n \in \mathbb{R}$, i.e. $Q = m A + n B$ is itself a Hermitian matrix $Q^\dagger = Q$.
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- 95
8
votes
1
answer
228
views
Available Methods for DSolve?
I would like to know, apart from Method->Automatic what are available methods for DSolve.
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- 299
3
votes
1
answer
153
views
Pattern not matching BoundaryMeshRegion
Mathematica 13.1 on Windows 10.
Can someone explain why the following does not match:
MatchQ[BoundaryMeshRegion[Cube[]], BoundaryMeshRegion[__]]
(* False *)
- 53.7k
3
votes
1
answer
66
views
How to set minimal allowed size for a graphical element?
Starting from version 10.3 there is a documented way to specify a maximum allowed size for a graphical element via UpTo:
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- 62k
10
votes
3
answers
223
views
Context menu to graphics component
How do I add individual context menus (shown upon secondary mouse click) to various components of a graphics object without needing to go into edit mode?
Consider the following example:
...
- 19.7k
2
votes
0
answers
60
views
VandermondeSolve changes, InterpolatingFunctionToPiecewise breaks
I just notice ResourceFunction["InterpolatingFunctionToPiecewise"] is broken in v13.1. (Perhaps it's in v13.0, I'm not sure. ) Here's a sample:
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- 67.1k