https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=218764
tl;tr; How to improve performance of regularised Interpolation?
Context
Since Version 12, Mathematica now incorporates a range of (underrated IMHO) regularisation methods to Fit and FindFit.
asked by chris https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1089 17 votes
answered by chris https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1089 7 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=218983
This is a follow-up on How to handle discontinuity in diffusion coefficient?
Consider diffusion of \(u(t,x)\) on the domain \(x \in [0,2]\) with some simple boundary conditions such as \(u(0) = 2, u(2) =\)
asked by Szabolcs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12 13 votes
answered by Tim Laska https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=61809 7 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=218859
TreePlot[{ {0 -> "Mr 1", 1/10}, {0 -> "Mr 2", 2/10}, {0 -> "Mr 3", 3/10}, {0 -> "Mr 4", 4/10}, {"Mr 1" -> "A1", 2/10 }, {"Mr 1" -> "B1", 1/10 }, {"Mr 1" ...
asked by CasperYC https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=62701 13 votes
answered by Szabolcs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12 18 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=219033
It seems since v12.1 a new doc type, tech note, is included in the documentation.
However, I cannot find an index page for the tech notes. So how can I list all such tech note pages?
asked by sunt05 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=260 10 votes
answered by WReach https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=142 11 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=219115
Given list \(L\) consisting only of \(0\)’s and \(1\)’s, we read \(L\) backwards and construct a new list \(O\) such that: (we start with \(O=\{1\}\) and then apply the two rules:)
if we encounter \(n\) ...
asked by Vepir https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=49840 9 votes
answered by Victor K. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1351 5 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=219020
Mathematica 12.1 introduced a number of amazing shaders such as StippleShading.
Is there a way to control the grain size of StippleShading?
On a standard resolution screen it looks like this:
asked by Szabolcs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12 9 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=218833
Wolfram makes the COVID-19 case data available in a form that is conveniently formatted for processing in Mathematica.
It can be accessed using:
data2 = ResourceData[ResourceUpdate["Epidemic Data ...
asked by theorist https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=45215 9 votes
answered by LouisB https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=22158 7 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=5790
If we have two vectors, \(a\) and \(b\), how can I make Jacobian matrix automatically in Mathematica?
$$ a=\left( \begin{array}{c} x_1^3+2x_2^2 \\ 3x_1^4+7x_2 \end{array} \right);b=\left(
asked by George Mills https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1012 37 votes
answered by Jens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=245 49 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=736
I quite often would like to draw graphics in my LaTeXdocuments using Mathematica. I have encountered three problems. I would like to know if there are any workarounds to these problems
I would ...
asked by Thomas Rot https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=227 124 votes answered by Simon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34 45 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=18
I consider myself a pretty good Mathematica programmer, but I’m always looking out for ways to either improve my way of doing things in Mathematica, or to see if there’s something nifty that I haven’t ...
asked by J. M.’s technical difficulties https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=50 536 votes
answered by faysou https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=66 473 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=8841
I’d like to plot the graph of the direction field for a differential equation, to get a feel for it. I’m a novice, right now, when it comes to plotting in Mathematica, so I’m hoping that someone can ...
asked by Matt Groff https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1735 29 votes
answered by Peter Breitfeld https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=307 24 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=194384
In version 2.0 of Mathematica there was a command, ReadProgrammerIntentions[ ] which allowed it rapidly compose code that could solve problems simple to complex, based on my requirements. Understand ...
asked by MikeY https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=47314 52 votes
answered by MarcoB https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27951 38 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=46538
I want to get the following expression from Mathematica to LaTeX:
\[ \begin {bmatrix} E_{\parallel } \\ E_{\perp } \end {bmatrix} \]
I have tried to use inbuilt ’symbol’ character from the special ...
asked by Steve Hatcher https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13314 18 votes
answered by Sjoerd C. de Vries https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57 25 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=208045
I’m just curious. My friend just told me that Mathematica is mostly for symbolic calculation and not efficient for Numerical computations. He told me that’s the reason most of the people don’t use ...
asked by Gummala Navneeth https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=66938 44 votes
answered by Szabolcs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12 73 votes
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=219057
I need to use the following code to do some calculations. But the running speed of this code is too slow. How can I modify this code to improve the running speed?
Cb = 0.5; Ch = 5./7; = ...
asked by Please Correct GrammarMistakes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42417 1 vote
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=219035
I tried to compute the following limit:
Limit[Series[ 1/(1/x^2) (Sin[y x]/(x^4))^2 - Sin[y x]/y(x^3) + 1/x^2, {x, 0, 5}], x -> 0, Assumptions -> {y > 0}] the output :
asked by Johe https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=71663 1 vote
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=218701
i need help to convert this code written in matlab about Butterworth filter:
%remove high-frequency components by 0.5-h butterworth filter; n =2; Wn =[1/30/0.5]; %30-min low-pass filter (LPF)%
asked by Iman Khaki https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=71671 1 vote