12.13.1 Top new questions this week

12.13.1.1 I am plotting a family of parabolas in TikZ, and there is a stray parabola. I'm confused

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760181

I am plotting a family of parabolas in TikZ, and there is a stray parabola. 
I'm confused. 
\documentclass[tikz,border=1cm]{standalone} 
\begin{document} 
\begin{tikzpicture} 
\pgfmathsetmacro{\... 
[tikz-pgf]
 

asked by Jasper https://tex.stackexchange.com/landing/r/digest?cta=user&id=319072 Score of 9

answered by quark67 https://tex.stackexchange.com/landing/r/digest?cta=user&id=132405 Score of 13

12.13.1.2 What is the best way to draw a potato (like found in vector analysis/continuum mechanics courses)

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760046

I apologized if this is a duplicate. 
What is the best way to draw such figures with tikz (or other packages)? 
For the time being just the potato like figure. I do not care for the vectors and the ... 
[tikz-pgf]
 

asked by Dimitrios ANAGNOSTOU https://tex.stackexchange.com/landing/r/digest?cta=user&id=284130 Score of 8

answered by nidarfp https://tex.stackexchange.com/landing/r/digest?cta=user&id=406312 Score of 11

12.13.1.3 Spacing and dot weight in bsmallmatrix (from mathtools)

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760145

MWE 
\documentclass{article} 
\usepackage{mathtools} 
\begin{document} 
Le signe $(-1)^{i+j}$ suit un motif en damier : 
\( 
\begin{bsmallmatrix} 
+ & - & + & - & \cdots \\ 
- & + & - ... 
[spacing] [mathtools]
 

asked by Dimitrios ANAGNOSTOU https://tex.stackexchange.com/landing/r/digest?cta=user&id=284130 Score of 7

answered by jlab https://tex.stackexchange.com/landing/r/digest?cta=user&id=316068 Score of 6

12.13.1.4 \nopagebreak in \paragraph dona^\200\231t have effect

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760160

General overview 
I redefine \paragraph{} in order to get a wrap paragraph title like this : 
The problem 
But sometimes, when I reach the bottom page, a \section or \subsection comming just before the \... 
[sectioning] [sections-paragraphs] [widows-orphans]
 

asked by fauve https://tex.stackexchange.com/landing/r/digest?cta=user&id=30933 Score of 7

answered by jlab https://tex.stackexchange.com/landing/r/digest?cta=user&id=316068 Score of 6

12.13.1.5 quotchap with LuaLaTeX and fontsetup

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760193

How can I have the quotchap package use the utopia font (only for the chapter number) with lualatex and fontsetup, like it does when using pdflatex? 
\documentclass{book} 
\usepackage{ifluatex} 
\... 
[fonts] [luatex] [quotchap]
 

asked by user20478285 https://tex.stackexchange.com/landing/r/digest?cta=user&id=292245 Score of 6

answered by cfr https://tex.stackexchange.com/landing/r/digest?cta=user&id=39222 Score of 4

12.13.1.6 Formatting a sequence of items with comma and ending with 'and' or 'respectively'

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760124

Can someone help me create a macro like 
\MyList{A;B;C;D;E;F} 
which returns 'A, B, C, D, E[,] respectively F" independently on how many 'arguments' (2+) that are specified and also support math, ... 
[strings]
 

asked by mf67 https://tex.stackexchange.com/landing/r/digest?cta=user&id=175045 Score of 6

answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 10

12.13.1.7 pgfplotstable commands do not work in a foreach loop

https://tex.stackexchange.com/landing/r/digest?cta=question&id=760133

I'm trying to put together n files into one with pgfplotstable. 
This example works: 
\begin{filecontents}{data1.csv} 
aaa 
bbb 
ccc 
\end{filecontents} 
\begin{filecontents}{data2.csv} 
111 
222 
333 
\end{... 
[pgfplotstable] [foreach]
 

asked by CarLaTeX https://tex.stackexchange.com/landing/r/digest?cta=user&id=101651 Score of 6

answered by CarLaTeX https://tex.stackexchange.com/landing/r/digest?cta=user&id=101651 Score of 6