10.4.1 Top new questions this week

10.4.1.1 Curve shortening flow

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=297119

I'd like to use mma to recreate this curve shortening flow effect. I have something that works for simple shapes (LHS), but not for more complex curves, which it causes to self-intersect (RHS gif): 
<... 
[differential-equations] [graphics] [function-construction] [differential-geometry]
 

asked by martin https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9923 Score of 13

answered by Goofy https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46569 Score of 11

10.4.1.2 How can we produce sliceforms?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=297114

Sliceforms are models made from intersecting sets of planes 
which slot together to generate intersecting three-dimensional 
surfaces. Here are some of them made by Nadja Vohradsky for the 
university of ... 
[graphics] [graphics3d] [generative-art]
 

asked by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254 Score of 13

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 Score of 9

10.4.1.3 Are new-style packages compatible with the Wolfram Paclet Repository?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=296997

The package I'm developing is getting hard to navigate as it gets larger.  I've started experimenting with using the new-style package format described in this question to break it up to subfiles.  ... 
[packages] [paclets]
 

asked by Chris K https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=6358 Score of 7

10.4.1.4 How to keep specific rows of a matrix based on their second element

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=297306

Suppose I have the following list: 
   list1 = {{a, 1, c, v, f}, {m, 2, s, f, a}, {s, 2, d, f, g}, {k, 3, g, 
f, a}, {l, 2, h, j, k}, {b, 1, n, m, d}} 
 
I need to ... 
[list-manipulation] [matrix]
 

asked by Delaram Nematollahi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=75560 Score of 6

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 Score of 5

10.4.1.5 Avoiding (numbering) duplicate keys

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=297027

... 
[list-manipulation] [associations]
 

asked by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254 Score of 6

answered by lericr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=84894 Score of 7

10.4.1.6 ListPlot3D, how not to connect some points?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=297272

I have a list  {{x1, y1, z1}, {x2, y2, z2}, ... , {xN, yN, zN}} , which I am plotting using  ListPlot3D . The {x, y} values are in ... 
[plotting]
 

asked by Quantization https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=48112 Score of 5

answered by MarcoB https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27951 Score of 6

10.4.1.7 How can I use option Weights for fitting?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=297147

I have the following dataset (time vs. a quantity called $s$): 
 OPD = {{0, 0.0305}, {3, 0.14}, {6, 0.5}, {17, 4.02}, {19, 5.04}, {21, 5.52}, {24, 5.76}}; 
 
To the ... 
[fitting]
 

asked by A novice https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=96206 Score of 5

answered by Domen https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=75628 Score of 6