Can we use Mathematica to design an electronic active filter?
How to mesh a French biscuit (modulated ellipsoid)
Solutions for searching over Mathematica notebooks?
Coordinate-free derivative
Please explain this syntax: GaborWavelet[6]["FourierFactor"]
How to select several columns from a dataset
BarLegend ticks distorted in MatrixPlot
Can we use Mathematica to design an electronic active filter? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=229714
How can we use Mathematica to design an electronic implementation of an active filter? [signal-processing] [control-systems]
asked by David Keith https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=44700 19 votes
answered by David Keith https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=44700
22 votes How to mesh a French biscuit (modulated ellipsoid) https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=229535
I would like to create a boundary mesh of the following ellipsoid, whose thickness is modulated along its long axis: The surface parametrization I used for it is: ... [mesh]
asked by Oscillon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13605 10 votes
answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999
10 votes Solutions for searching over Mathematica notebooks? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=229522
I have hundreds of Mathematica notebooks accumulated over the years, and I'd like to search over them. I've been using various versions of text search (grep, SilverSearcher, Spotlight), but there are ... [programming]
asked by Yaroslav Bulatov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=217 10
votes answered by Chris Degnen https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=363
11 votes Coordinate-free derivative https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=229703
Given the function $$f:v\mapsto \dfrac{v}{\|v\|},$$ I would like to compute the derivative of $f$, that is $df(v)$. It is possible to derive it by hand, which leads to $$df(v)=\dfrac{1}{\| v\|}\Big(... [calculus-and-analysis] [symbolic] [differential-geometry]
asked by anderstood https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18767 9
votes Please explain this syntax: GaborWavelet[6]["FourierFactor"] https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=229853
I've been using Mathematica for some years, yet I'm befuddled by this statement: GaborWavelet[6]["FourierFactor"] It appears to give the center frequency ... [undocumented] [wavelet-analysis]
asked by Chris https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=66733 7 votes answered by Carl Woll https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=45431
11 votes How to select several columns from a dataset https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=229678
I have a dataset with 20 columns. For a analysis I need all columns except the columns 9 and 11. What I do is: ... [list-manipulation] [simplifying-expressions]
asked by Michiel van Mens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9590
7 votes answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125
9 votes BarLegend ticks distorted in MatrixPlot https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=229502
As shown in many threads here (this, this, ...), Ticks is a valid option of BarLegend . But it doesn't seem to work well in this ... [plotting] [legending] [ticks] [undocumented]
asked by xiaohuamao https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=11125 7
votes answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125
8 votes