11.64.1 Top new questions this week

11.64.1.1 Why is my Student's t distribution plotting incorrectly in pgfplots?
11.64.1.2 How can I draw this box in 3D ? I am unhappy with that I have
11.64.1.3 How to typeset the complete structure of deeply nested formulas?
11.64.1.4 TikZ bounding box not calculated properly for rotated circle nodes in standalone class
11.64.1.5 An enumeration with apostrophes
11.64.1.6 Drawing vertical and horizontal vectors along a BA~(c)zier curve (without local rotation)
11.64.1.7 Why can't I use \StrLeft for this macro?
11.64.1.1 Why is my Student's t distribution plotting incorrectly in pgfplots?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=751504

I am trying to plot a Student's t distribution without using gnuplot. Here is what I have been trying: 
\documentclass{standalone} 
\usepackage{tikz} 
\usepackage{pgfplots} 
\begin{document} 
\... 
[tikz-pgf] [pgfplots]
 
asked by lane-h-rogers https://tex.stackexchange.com/landing/r/digest?cta=user&id=283356 Score of 9
answered by Rmano https://tex.stackexchange.com/landing/r/digest?cta=user&id=38080 Score of 10
11.64.1.2 How can I draw this box in 3D ? I am unhappy with that I have

https://tex.stackexchange.com/landing/r/digest?cta=question&id=751445

I need to draw a 3D box comprising two half cylinders on either side attached to a cuboid with square holes. I have managed to accomplish this. But I am not happy with what I have now. For  one, it ... 
[tikz-pgf] [tikz-3dplot]
 
asked by Shyamhs https://tex.stackexchange.com/landing/r/digest?cta=user&id=308458 Score of 9
answered by Juan CastaA~+-o https://tex.stackexchange.com/landing/r/digest?cta=user&id=231368 Score of 18
11.64.1.3 How to typeset the complete structure of deeply nested formulas?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=751318

I have some formulas with a deeply nested structure that I would like to typeset combined in a single setting, similar to the following graphic I made in Paint. 
There are multiple nested ... 
[typography] [trees] [nesting] [formulas]
 
asked by MaxD https://tex.stackexchange.com/landing/r/digest?cta=user&id=45734 Score of 9
answered by cfr https://tex.stackexchange.com/landing/r/digest?cta=user&id=39222 Score of 12
11.64.1.4 TikZ bounding box not calculated properly for rotated circle nodes in standalone class

https://tex.stackexchange.com/landing/r/digest?cta=question&id=751224

I'm using tikz to create a figure with a ring and n nodes on it equally separated by an angle of 360A^Degree / n. Since I want the number of nodes to be arbitrary I defined a command which creates the ... 
[tikz-pgf] [rotating] [standalone] [circles] [bounding-box]
 
asked by TheFox https://tex.stackexchange.com/landing/r/digest?cta=user&id=269361 Score of 8
answered by Jasper Habicht https://tex.stackexchange.com/landing/r/digest?cta=user&id=47927 Score of 12
11.64.1.5 An enumeration with apostrophes

https://tex.stackexchange.com/landing/r/digest?cta=question&id=751242

I'm trying to set up an enumeration that would produce two items P_3' and P_3''. My attempt 
\usepackage[shortlabels]{enumitem} 
\newcommand{\apostrophes}[1]{% 
\ifcase\numexpr#1\relax 
\or ' \or '' \... 
[enumerate]
 
asked by Leandro Caniglia https://tex.stackexchange.com/landing/r/digest?cta=user&id=102342 Score of 8
answered by cfr https://tex.stackexchange.com/landing/r/digest?cta=user&id=39222 Score of 9
11.64.1.6 Drawing vertical and horizontal vectors along a BA~(c)zier curve (without local rotation)

https://tex.stackexchange.com/landing/r/digest?cta=question&id=751203

Ia^\200\231m trying to annotate a quadratic BA~(c)zier*  curve in TikZ with vectors. Right now I can draw normal vectors (red arrows) at multiple points along the curve using the decorations.markings library. 
Here ... 
[tikz-pgf] [decorations] [bezier]
 
asked by lukewarn https://tex.stackexchange.com/landing/r/digest?cta=user&id=415378 Score of 8
answered by cfr https://tex.stackexchange.com/landing/r/digest?cta=user&id=39222 Score of 8
11.64.1.7 Why can't I use \StrLeft for this macro?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=751195

I'd like to have a macro which returns the first two letters of a weekday given a certain date (DD.MM.YYYY). 
For example "16.09.2025" would be "Tu". 
\documentclass{article} 
\... 
[macros] [datetime]
 
asked by haifisch123 https://tex.stackexchange.com/landing/r/digest?cta=user&id=292785 Score of 7
answered by Marijn https://tex.stackexchange.com/landing/r/digest?cta=user&id=89417 Score of 9