How can I prevent level 1 headings from being numbered?

[ozzyc]

Can I exclude level 1 headings from numbering while numbering all subsequent headings (level 2 and below) as “1.1”?

#show heading.where(
  level: 1
): it => block(width: 100%)[
  #set align(center)
  #set text(
    size: 20pt,
    weight: "bold",
    font: ("Poppins","Noto Serif CJK SC"),
  )
  #counter(heading).display(it.numbering)
  #smallcaps(it.body)
]

#show heading.where(
  level: 2
): it => block(width: 100%, below: 1.0em)[
  #set align(left)
  #set text(
    size: 18pt,
    weight: "bold",
    font: ("Poppins","Noto Serif CJK SC"),
    fill: rgb("#045bac")
  )
  #counter(heading).display(it.numbering)
  #smallcaps(it.body)
]

#show heading.where(
  level: 3
): it => block(width: 100%, below: 1.2em)[
  #set align(left)
  #set text(
    size: 14pt,
    weight: "regular",
    font: ("Poppins","Noto Serif CJK SC"),
    fill: rgb("#062f56")
  )
  #counter(heading).display(it.numbering)
  #smallcaps(it.body)
]

 
#set heading(numbering: "1.1")

I want to achieve:

Level 2 heading numbering: 1 2 3…
Level 3 heading numbering: 1.1, 1.2, 1.3…
And so on.

In the code above, if I remove the #counter(heading).display(it.numbering) from the first-level heading, the second-level headings become 1.1, 1.2…, which doesn’t match my desired outcome.

I’d be very grateful if you could tell me how to achieve this.

[vmartel08]

Hi there @ozzyc,

Two suggestions:

1. You could use a numbering function:

#show heading.where(level: 1): set heading(numbering: none)
#set heading(numbering: (first, ..nums) => numbering("1.", ..nums))

2. Or use the package numbly – Typst Universe with:

#import "@preview/numbly:0.1.0": numbly
#set heading(numbering: numbly(
  "",
  "{1}",
  "{1}.{2}",
  "{1}.{2}.{3}", // as needed
))

EDIT:

If we apply to your code (I have commented the font lines to be able to compile),

Your code

#show heading.where(level: 1): set heading(numbering: none)
#set heading(numbering: (chapter, ..n) => numbering("1.", ..n))

#show heading.where(
  level: 1
): it => block(width: 100%)[
  #set align(center)
  #set text(
    size: 20pt,
    weight: "bold",
  //  font: ("Poppins","Noto Serif CJK SC"),
  )
  //#counter(heading).display(it.numbering)
  #smallcaps(it.body)
]

#show heading.where(
  level: 2
): it => block(width: 100%, below: 1.0em)[
  #set align(left)
  #set text(
    size: 18pt,
    weight: "bold",
  //  font: ("Poppins","Noto Serif CJK SC"),
    fill: rgb("#045bac")
  )
  #counter(heading).display(it.numbering)
  #smallcaps(it.body)
]

#show heading.where(
  level: 3
): it => block(width: 100%, below: 1.2em)[
  #set align(left)
  #set text(
    size: 14pt,
    weight: "regular",
//    font: ("Poppins","Noto Serif CJK SC"),
    fill: rgb("#062f56")
  )
  #counter(heading).display(it.numbering)
  #smallcaps(it.body)
]
 
= Test
== Test
=== Test
==== Test
= Test
== Test
=== Test
==== Test

Edit2:
Following:

@Andrew

Don’t use show rules unless you have to, especially if you put set rules inside. You will face Which show rule takes precedence? or Set rule inside show rule (closure) for the same element gets applied for table/grid · Issue #6219 · typst/typst · GitHub.

Prioritize show-set rules and keep show rules minimal/non-hacky

and with a bit of cleanup to reduce the usage of show rules (your should prioritize show-set rules):

#set heading(numbering: (first, ..nums) => numbering("1.", ..nums))
#show heading: smallcaps
#show heading: set align(left)
#show heading: set block(width: 100%)

#show heading.where(level: 1): set heading(numbering: none)
#show heading.where(level: 1): set align(center)
#show heading.where(level: 1): set text(
  size: 20pt,
  weight: "bold",
  //  font: ("Poppins","Noto Serif CJK SC"),
)

#show heading.where(level: 2): set block(below: 1.0em)
#show heading.where(level: 2): set text(
  size: 18pt,
  weight: "bold",
  //  font: ("Poppins","Noto Serif CJK SC"),
  fill: rgb("#045bac"),
)

#show heading.where(level: 3): set block(below: 1.2em)
#show heading.where(level: 3): set text(
  size: 14pt,
  weight: "regular",
  //  font: ("Poppins", "Noto Serif CJK SC"),
  fill: rgb("#062f56"),
)

[Andrew]

Hello.

#set heading(numbering: (..n) => numbering("1.1", ..n.pos().slice(1)))
#show heading.where(level: 1): set heading(numbering: none)
= First level
== Second level
=== Third level
==== Fourth level

Though, to address the rest of the code:

// #show heading: set text(font: ("Poppins", "Noto Serif CJK SC"))
#set text(font: ("Poppins", "Noto Serif CJK SC"))
#set heading(numbering: (..n) => numbering("1.1", ..n.pos().slice(1)))

#show heading.where(level: 1): set align(center)
#show heading.where(level: 1): set text(20pt)
#show heading.where(level: 1): set heading(numbering: none)
// #show heading.where(level: 1): smallcaps

#show heading.where(level: 2): set text(18pt, rgb("#045bac"))
// #show heading.where(level: 2): smallcaps

#show heading.where(level: 3): set text(14pt, rgb("#062f56"), weight: "regular")
// #show heading.where(level: 3): smallcaps

#show heading: smallcaps

= First level
== Second level
=== Third level
==== Fourth level

@vmartel08

#set heading(numbering: (first, ..nums) => numbering("1.", ..nums))

Nice, I already forgot about this neat (_, ..n) trick.