4
votes
0answers
67 views

Sudden changes in performance

Last week Mathematica was working fine. At the beginning of this week I went on a trip and it slowed down. I ran Needs["Benchmarking`"] BenchmarkReport[] The ...
4
votes
0answers
43 views

Multi-variable FunctionInterpolation with the range of one variable as a function of another

How can I modify my FunctionInterpolation code so that the boundary of one of the variables is a function of another variable? ...
4
votes
0answers
60 views

Possible bug with ticks with superscripts, Labeled and Export to PDF

Here is the minimal working example that gives me problems with Mathematica 10.4 on OSX ...
4
votes
0answers
82 views

How to run a Mathematica package (.m) from python?

I am new to Mathematica and I need to interface with a Python code that I have. Basically, I have a Mathematica package (.m) with a bunch of complicated functions. I want to use some code from python ...
4
votes
0answers
45 views

Is there a clean way to parallelize multi-index tables?

The documentation of ParallelTable indicates that if you want to parallelize the evaluation of a table of more than one dimension, such as ...
4
votes
0answers
56 views

How to get f[x] to match with f[c_., x] when OneIdentity doesn't match

After setting: SetAttributes[f, OneIdentity] Default[f] = 1; We have the following successful matches: ...
4
votes
0answers
26 views

AppearanceRules on multipage Web Form

I'm attempting to make a web survey using FormFunction. To list the questions I am using AppearanceRules to give each page an ...
4
votes
0answers
48 views

Using Mathematica to find an alternative continued fraction for $\zeta(5)$

Given the Riemann zeta function $\zeta(n)$. I. $x=\zeta(3)$ Using Euler's continued fraction formula, we can form $\zeta(3)$'s cfrac as, $$Ax+B = \cfrac{1}{v_1 - \cfrac{1^6}{v_2 - \cfrac{2^6}{...
4
votes
0answers
58 views

Integral Form of Modified Bessel Function of the Second Kind

Why can't Mathematica integrate r = Integrate[Exp[-x Cosh[t]], {t, 0, Infinity}]; r = Assuming[Element[x, Reals], Simplify[r]]; Together[r] From Wikipedia, it ...
4
votes
0answers
71 views

RealDigits and functional style

So while thinking about Replacing numbers of which you only know certain digits I have faced, again, a problem that I find hard to extract from RealDigits' output ...
4
votes
0answers
85 views

Improve Accuracy of FindRoot

This is a follow up question to an earlier questions I asked. The link is: Product of $N\ 2 \times 2$ matrices and subsequently solving an equation dependent on the product As I am new here, I am not ...
4
votes
0answers
107 views

Why does Solve work in v9.0.1 but not in v10.3.1

I want to solve the following DE $$ P'=k(M-P)P, P[0]=53.08, P[50]=23.192, P[100]=76.212.$$ The Mathematica command is ...
4
votes
0answers
65 views

Numerical instabilities of a convection-(non-)diffusion equation when shrinking from a square to a triangular domain

I am trying to evaluate a parameter-dependent indefinite integral using a PDE-based scheme I described here, and I'm having some trouble when I try and cut down the domain from a square to a triangle. ...
4
votes
0answers
53 views

How to set Ticks for an AngularGauge?

How do you set custom ticks on an AngularGauge. ...
4
votes
0answers
180 views

Finding eigenvalues in Mathematica: why so slow?

I am trying to find the eigensystem of a large sparse real symmetric matrix, and I only need the lowest 40 or so eigenstates. The relevant code is as follows: ...
4
votes
0answers
68 views

Create an adequate 'training set' to train a ClassifierFunction which performs the role of the built-in `SubsetQ`

I am trying to "grow" my own SubsetQ function using Machine Learning methods. My cSubsetQ when given two lists (listA and listB)...
4
votes
0answers
64 views

Non-English spell checking dictionaries in Mathematica: Where to get them?

I simply want to be able to spell check my (german) notebooks. There was a question similar to this but with no answer: Non-english spell check dictionaries for Mathematica? You can find this ...
4
votes
0answers
88 views

Increasing resolution in AnatomicalData

In version 10.3 one can get an image of an anatomical structure, such as a brain, using this code: AnatomyData[Entity["AnatomicalStructure", "Brain"], "Image"] ...
4
votes
0answers
85 views

ParallelTable slow down, Region functions

I am experiencing speed issues with ParallelTable. There are a few related problems on SX posted here and here, but no resolution. The various respondents to those ...
4
votes
0answers
99 views

Fitting data with unique variable per measurement

Imagine we are in the following situation, we have a nonlinear system of functions $f$ with coördinates $x_i$, and unknown parameters $\delta_i$'s and $t$. Let this system be defined as, \begin{...
4
votes
0answers
134 views

new kernel crashes using DSolve in 10.3.1

Update: I added small movie showing the crash, since others who tried it so far could not reproduce it on their system. Original question I am finding new problems with ...
4
votes
0answers
97 views

Is it possible to prohibit unnecessary CopyTensor in Compile? Just like .noalias() in Eigen library?

Turn on Needs["CompiledFunctionTools`"] First example ...
4
votes
0answers
249 views

Wolfram Workbench Installation on Windows 10

I have installed Mathematica 10.3 on Windows 10 Pro, x64 machine, and now I am trying to install Wolfram Workbench plugin. I have read all the posts related to this type of error, most notably "error ...
4
votes
0answers
81 views

Can one combine Mathematica with bash script?

For example, I create a Mathematica nb file which can work on a set of parameter values or several files at once. It needs me to change the parameter after finishing computing one parameter. If I ...
4
votes
0answers
55 views

Usage information garbled when printed to pdf or printer

In Mathematica v10.2 running in the notebook Information ?Integrate yields the following But, when printed to printer or ...
4
votes
0answers
107 views

Exploring formal limit definition

I found a few demonstrations on the Wolfram Demonstration Project site that help users to explore the formal definition of a limit. That is, $$\lim_{x\to a}f(x)=L$$ if and only if for every $\epsilon&...
4
votes
0answers
56 views

How to display EntityProperty objects with their CanonicalName?

Is there a way to display EntityProperty objects with their CanonicalName instead of the text they are currently displayed with. ...
4
votes
0answers
64 views

NMinValue , NMaxValue , NMinimize and NMaximize behave poorly for 2-dimensional function unless the constraint is posed as an ImplicitRegion

I am making a plotting function where I need to know the max value the function takes over the given 2D range. I noticed a difference between the behavior of ...
4
votes
0answers
57 views

How to know the string data/settings, of some options/functions

It is known that several functions and options take some sort of input in this form: option->"something" function["something"] The simple example for this is ...
4
votes
0answers
157 views

Autocomplete not working with tab key on Mathematica 10.3 Linux

when I want to autocomplete a function I can't use TAB key to expand what I typed in. If I press TAB, it escapes the popup suggestion menu. Autocomplete only works if I press ENTER. Furthermore,once ...
4
votes
0answers
71 views

How to put 2 or 3 NeumannValue conditions?

I want to solve numerically the heat exchange of a fin in transient state and two-dimentional, here is my attempt but instead of put DirichletCondition on ...
4
votes
0answers
76 views

Planning flights for a special route

I want to plan a world trip with Mathematica. So I already have the dataset with all the cities I want to visit and the tour (with the command FindShortestTour). So ...
4
votes
0answers
73 views

Avoid Evaluation of Function at NDSolve

I have a huge "black-box" f function, which I want to integrate. Let's define it: f[x_,y_,a_]:=a*Exp[-(a*10000)(x^3+y^3)] as ...
4
votes
0answers
149 views

Complex boundary conditions and NDEigensystem

I am having difficulties implementing a Neumann value when numerically solving the Navier equation using NDEigensystem. The Navier equation is given by $\nabla^2 \vec u + (p^2 - 1) \nabla(\nabla\...
4
votes
0answers
78 views

File Formats for Scientific Data

I have a simulation written in another language which currently just dumps all its data (doubles, lists of doubles, lists of lists of doubles) in lines in ASCII, and then I read it into Mathematica by ...
4
votes
0answers
58 views

Bug: quote signs with parentheses followed by superscripts in same cell

(x + 1)^2 where ^2 should be a superscript that I do not know how to display here. If you type in a pair of quote signs ...
4
votes
0answers
57 views

Is there any way to make custom AsynchronousTaskObjects?

One of the pieces of functionality that intrigues me the most in Mathematica 9+ comes in the form of StartAsynchronousTask and friends. However, it can only start ...
4
votes
0answers
62 views

CloudDeploy task to use DatabinAdd?

Long time reader, first time writer. I've been following the presidential candidates' popularity on Facebook as a side project recently, and storing the total number of likes on their page daily on ...
4
votes
0answers
76 views

Size problems combining objects in a Graphics using Inset

The Problem I need to put together different graphics objects in a precise way inside a Graphics. Some objects are drawn directly by graphics primitives, some ...
4
votes
0answers
38 views

DateObject's DateFormat option has inconsistent result in TimelinePlot LabelingFunction and by direct call

I want to strip time and time zone from dates in the LabelingFunction of a TimelinePlot. I am using the ...
4
votes
0answers
89 views

List(Log)Plot with “high” resolution results in various warnings, e.g. BinCounts::step

Here is some very odd behavior from ListLogPlot. So if I want to plot a function using LogPlot, I can specify the ...
4
votes
0answers
93 views

Improving the speed of an optimization algorithm via compilation and parallellization

I have written an implementation of eight variants of the PSO-algorithm and I want to test them over a set of test functions. I am using parallelization as it improves the speed a lot and I have also, ...
4
votes
0answers
75 views

How to write Coordinate Chart in Xcoba in index form?

I am using xCoba for manipulating tensors. I do the usual, defining my metric, manifold, chart etc. ...
4
votes
0answers
112 views

Bug in ListLinePlot[] when Filling up and down?

I'm trying to understand this apparently incorrect Filling behavior in ListLinePlot[]. Evaluating this ...
4
votes
0answers
33 views

Why are Parenthesis not added to CExpression in Package SymbolicC?

The documentation of SymbolicC, more specifically of COperator, states that Parentheses are added as necessary together with the ...
4
votes
0answers
112 views

Integral of DiracDelta giving an unusual answer

I have been getting a number of seemingly inconsistent solutions to integrals of Dirac delta functions in which the integrand evaluates to DiracDelta[0] at one of ...
4
votes
0answers
83 views

MathLink Excel version 3.5 & 3.6 inconsistency

I bought and installed Mathematica Link for Excel 3.6.0. However, after installation, it appears inside Excel as Version 3.5.0. Has anyone seen this issue? I have emailed Wolfram support but have ...
4
votes
0answers
57 views

Evaluate cells error in Mathematica

Clicking on the button generated by the following code: ...
4
votes
0answers
72 views

Incompatibility between CDF document and reveal.js

I am making some reveal.js-based slides with a CDF document embedded. The minimal example include the files: ...
4
votes
0answers
94 views

Why does FromDigits transpose its argument (sometimes)?

a = {{1, 2}, {3, 4}, {5, 6}} ; FromDigits /@ Transpose@ a == FromDigits @ a (* True *) The only "strange" syntax I've found in the docs is But it doesn't ...

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