10.42.1 Top new questions this week

10.42.1.1 Improper `at' size due to newtx

https://tex.stackexchange.com/landing/r/digest?cta=question&id=721063

Suddenly, I'm getting this error message when using newtx: 
Improper `at' size (0.0pt), replaced by 10pt. 
Here is a minimal example where this happens: 
\documentclass[12pt]{article} 
\usepackage{newtx} 
... 
[fonts] [newtx]
 

asked by Ed Scheinerman https://tex.stackexchange.com/landing/r/digest?cta=user&id=169712 Score of 6

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 3

10.42.1.2 How to avoid the strange line at the end of a zigzag decoration

https://tex.stackexchange.com/landing/r/digest?cta=question&id=720942

I would like to place a specified number of zigzags along a path. 
That means, in the following MWE are exactly 4 positive and 4 negativ amplitudes around the black line. 
How can I avoid the strange ... 
[tikz-pgf] [decorations]
 

asked by cis https://tex.stackexchange.com/landing/r/digest?cta=user&id=46023 Score of 6

answered by hpekristiansen https://tex.stackexchange.com/landing/r/digest?cta=user&id=8650 Score of 6

10.42.1.3 Rotating each other row of spirograph patterns

https://tex.stackexchange.com/landing/r/digest?cta=question&id=720915

I use the following code, modified from the answer to this post, to draw spirograph patterns; 
\documentclass[12pt,a4paper]{article} 
\usepackage[margin=1cm]{geometry} 
\usepackage{tikz} 
\usepackage{... 
[tikz-pgf]
 

asked by Hany https://tex.stackexchange.com/landing/r/digest?cta=user&id=93617 Score of 5

answered by NBur https://tex.stackexchange.com/landing/r/digest?cta=user&id=151808 Score of 5

10.42.1.4 Expand a `.cs` defined by key inside the function

https://tex.stackexchange.com/landing/r/digest?cta=question&id=721126

I have a prop list in which I save items using the \addtoprop 
command and then loop through the prop list and print it with the 
\foreachinprop command. The \foreachinprop command has several 
keys, but ... 
[macros] [expl3] [latex3]
 

asked by Pablo GonzA~\[DownExclamation]lez Lhttps://tex.stackexchange.com/landing/r/digest?cta=user&id=7832 Score of 5

answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 5

10.42.1.5 How to Create a Fully Centered and Adjustable Multiline Table in LaTeX?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=721082

I am unfortunately quite a LaTeX noob and am having difficulties putting together a table. My goal is to center the content of each cell both vertically and horizontally. The table is aligned ... 
[tables] [horizontal-alignment] [vertical-alignment] [alignment]
 

asked by bolli https://tex.stackexchange.com/landing/r/digest?cta=user&id=324690 Score of 5

answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 Score of 4

10.42.1.6 why arrow has break?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=720990

I am trying to draw scheme of control system. The feedback arrow has a break at the begin. Feedback line must be solid. I can't understand, why it happens.. Please, help. 
The red arrow shows the break ... 
[arrows]
 

asked by Alex Lelekov https://tex.stackexchange.com/landing/r/digest?cta=user&id=206932 Score of 5

answered by cfr https://tex.stackexchange.com/landing/r/digest?cta=user&id=39222 Score of 5

10.42.1.7 Creating a command to display blackboard font

https://tex.stackexchange.com/landing/r/digest?cta=question&id=721248

I am relatively new to LaTeX and I want to know whether there is a way to create a command such that it takes whatever capital letter the command is and prints the blackboard font. Here's what I mean: ... 
[math-mode] [macros] [mathbb]
 

asked by A R https://tex.stackexchange.com/landing/r/digest?cta=user&id=325187 Score of 4

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 8