11.47.1 Top new questions this week

11.47.1.1 Draw illustration (cylindric)
11.47.1.2 How can I improve the appearance of a 3D parametric curve with projections in PGFPlots?
11.47.1.3 Use Libertinus serif italic J from stylistic alternative
11.47.1.4 How to vertically center a rotated cell across two rows in a LaTeX table?
11.47.1.5 Is the main advantage of sockets that they are TeX's version of enum?
11.47.1.6 How Can I Define Macros Using Name Suffixes Based on Counter Values?
11.47.1.7 Draw parabole and secant plane in perspective
11.47.1.1 Draw illustration (cylindric)

https://tex.stackexchange.com/landing/r/digest?cta=question&id=747599

I have a such image 
And I try to draw this in Tikz, and have some troubles: 
how to set the correct viewing angle (as in the picture) for set the correct position of the plane at an angle of $2pi/3$? 
... 
[tikz-pgf] [tikz-3d]
 
asked by Alex https://tex.stackexchange.com/landing/r/digest?cta=user&id=280332 Score of 12
answered by Jasper https://tex.stackexchange.com/landing/r/digest?cta=user&id=319072 Score of 6
11.47.1.2 How can I improve the appearance of a 3D parametric curve with projections in PGFPlots?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=747873

I'd like to recreate the appearance of a 3D parametric curve with vertical projection lines, as shown in the image below (you can ignore the text labels): 
Below is my code and the output it produces. ... 
[pgfplots]
 
asked by Marco Moldenhauer https://tex.stackexchange.com/landing/r/digest?cta=user&id=278762 Score of 9
answered by Nguyen Van Chi https://tex.stackexchange.com/landing/r/digest?cta=user&id=236162 Score of 3
11.47.1.3 Use Libertinus serif italic J from stylistic alternative

https://tex.stackexchange.com/landing/r/digest?cta=question&id=747713

The capital J in the serif italic font from Libertinus (i.e. Libertine) is a bit out of place. There is a stylistic alternative in the font (cf. for example this PR) that contains a glyph that's more ... 
[fonts] [fontspec] [libertinus]
 
asked by schtandard https://tex.stackexchange.com/landing/r/digest?cta=user&id=48973 Score of 9
answered by user187802 https://tex.stackexchange.com/landing/r/digest?cta=user&id=187802 Score of 11
11.47.1.4 How to vertically center a rotated cell across two rows in a LaTeX table?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=747600

Ia^\200\231m trying to format a table in LaTeX where one of the headers, "Header B", spans two rows and is rotated vertically using \rotatebox. Ia^\200\231d like this label to be centered vertically across ... 
[tables] [vertical-alignment]
 
asked by Andy R https://tex.stackexchange.com/landing/r/digest?cta=user&id=300114 Score of 8
answered by samcarter_is_at_topanswers.xyz https://tex.stackexchange.com/landing/r/digest?cta=user&id=36296 Score of 6
11.47.1.5 Is the main advantage of sockets that they are TeX's version of enum?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=747803

I'm wanting to understand sockets better.  The following is adapted from texdoc ltsockets: 
\documentclass{article} 
\NewSocket{fooSocket}{2} 
\NewSocketPlug{fooSocket}{fooSocketPlugA}{foo-A: #1!#2} 
\... 
[sockets]
 
asked by Teepeemm https://tex.stackexchange.com/landing/r/digest?cta=user&id=107497 Score of 6
answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 13
11.47.1.6 How Can I Define Macros Using Name Suffixes Based on Counter Values?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=747780

I am trying to define a set of macros whose names are derived from the values of a counter. In the MWE given below, I am trying to define the macros \itemOne, \itemTwo, ... \itemSeven. I get the ... 
[tex-core] [counters] [expansion] [csname]
 
asked by HOO https://tex.stackexchange.com/landing/r/digest?cta=user&id=270393 Score of 6
answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 7
11.47.1.7 Draw parabole and secant plane in perspective

https://tex.stackexchange.com/landing/r/digest?cta=question&id=747688

I'd like to reproduce the following parabola in TeX but my approach is not working as I'd like it to. 
Because TeX doesn't have a 3D engine I drew the whole thing in Geogebra and then tried to ... 
[tikz-pgf] [diagrams] [tikz-path]
 
asked by graograman https://tex.stackexchange.com/landing/r/digest?cta=user&id=305925 Score of 6
answered by kabenyuk https://tex.stackexchange.com/landing/r/digest?cta=user&id=204924 Score of 4