5.24.1 Top new questions this week

5.24.1.1 Draw a line nicely around nodes

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=500016

I have this picture: 
generated by: 
\documentclass{standalone} 
\usepackage{tikz} 
\usetikzlibrary{calc, shapes, positioning} 
\begin{document} 
\begin{tikzpicture} 
\node (A) [draw, ellipse,  ... 
[tikz-pgf]
 

asked by Horus https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=169654 14 votes

answered by JJM Driessen https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=41169 15 votes

5.24.1.2 Draw 3D Cubes around centre

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=499733

I'm trying to draw a set of rotated rectangular cuboids around a centre point in Tikz. I've created an example of what I'm trying to achieve in OpenSCAD below 
with the code to generate the above  ... 
[tikz-pgf] [3d]
 

asked by FortuneCookie https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=180917 12 votes

answered by marmot https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=121799 19 votes

5.24.1.3 Align by center of symbol

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=499883

I want to align my equation by the center of a symbol, not by the beginning. More precisely, I have the following: 
\begin{align*} 
A\subseteq B&\iff\forall a\in A:a\in B\\ 
A\subsetneq  ... 
[math-mode] [align]
 

asked by MetaColon https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=190943 11 votes

answered by egreg https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=4427 10 votes

5.24.1.4 TikZ Can I draw an arrow by specifying the initial point, direction, and length?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=499713

I would like to draw something similar to this: 
I was able to draw the triangles, but I cannot figure out how to easily draw the arrows. This is my attempt: 
\documentclass[12pt]{book} 
... 
[tikz-pgf] [draw]
 

asked by Ovi https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=113754 10 votes

answered by marmot https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=121799 9 votes

5.24.1.5 Drawing an accurate guitar fretboard with TikZ

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=500427

This is kind of a fun one. 
dist( x ) = s / ( 2 ^ ( x / d ) ) 
Such that: 
x = number of the fret being evaluated (let's say {0,...,24} so it's exactly 2 full octaves). 
s = scale length  ... 
[tikz-pgf] [programming] [draw] [music] [mathematics]
 

asked by tjt263 https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=165801 9 votes

answered by Vinzza https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=151932 2 votes

5.24.1.6 Adding a vertical line at the right end of the horizontal line in \frac

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=499930

I'd like to use a mathematical notation that looks like a fraction \frac{A}{B}, with an additional vertical line that extends from the right end of the horizontal line down towards the base line of  ... 
[fractions]
 

asked by Michael https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=7095 8 votes

answered by egreg https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=4427 10 votes

5.24.1.7 Remove intersect line for one circle using venndiagram2sets

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=499927

Problem: 
I wish to remove the intersecting line for circle A (left). 
Minimal Working Example (MWE): 
\documentclass{article} 
\usepackage{tikz} 
\usetikzlibrary{backgrounds,positioning} 
... 
[tikz-pgf] [circles] [line] [venn-diagrams]
 

asked by kexxcream https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=13362 7 votes

answered by marmot https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=121799 10 votes