Hide chapter titles in ConTeXt

chapterscontextsection-titles

I have a situation where I need to place \chapter{} on the page, without displaying the actual title.

(1) Some code is contains criterium=chapter and will be broken without knowing a new chapter has started.

(2) The table of contents and cross-references still need to know there is a new chapter.

(3) I simply need some of the chapter titles (not all) to be hidden.

\starttext

    \chapter[placehead=no]{This is a chapter title}

    \input knuth

\stoptext

I tried the above code, which I can't see why it won't work, because placehead=yes is used to make \part{} titles visible, but strangely it does not work, it still makes the title appear, but just messes up the formatting.

How can I place a new chapter, have that chapter's title still appear in the table of contents and be used in cross-references, without making a chapter title appear on the page?

Best Answer

Use placehead=hidden

\setuphead
   [chapter]
   [placehead=hidden]

\starttext

\completecontent

\startchapter[title=First chapter]

   \startsection[title=First section]
      Lorem ipsum \dots
   \stopsection

   \startsection[title=second section]
      Lorem ipsum \dots
   \stopsection

\stopchapter

\startchapter[title=Second chapter]

   \startsection[title=First section]
      Lorem ipsum \dots
   \stopsection

\stopchapter

\stoptext

Related Solutions

[Tex/LaTex] How to create custom section titles with a “ <number>” format in ConTeXt</a></h5></div><div class='bg-transparent mb-3'> <p>I agree with you that exploiting the document structure is a convenient choice for this end: it offers a high degree of configurability and comes with neat extras like list (read: table of contents) building by default. So the following will be a <em>structure based</em> solution, leaving the enumerations based approach to somebody else.</p> <hr/> <p>The trick is the <em>ownnumbers</em> key of structure headers. It allows precise control over the counter mechanism for every head. Headers that are defined with <code>ownnumbers=yes</code> take a mandatory first argument by means of which their counter value can be set explicitly. Counters created by <code>\definecounter</code> each have their own <em>way</em> key that allows fine-grained control of the reset, or disabling it as required by this question (<code>way=text</code>).</p> <p>Once the counters are in place, all that’s left is to suppress placement of the structure title element. This is done in two parts: First, all headers are defined to be accessed only implicitly. The user level macros <code>\week</code>, <code>\activity</code> and <code>\presentation</code> are wrappers that at the same time pass the headers their “ownnumbers” and an empty title string. Second, placement method <code>\activityhead</code> is defined that chooses the display string from a mapping of labels, ignoring the structure title altogether.</p> <p>(Coding style is mkiv for consistency as <code>\defineheadplacement</code> does not support named arguments.)</p> <pre><code>\unprotect %% (1) define the base commands. Notice the “ownnumber” key in %% \base_presentation and \base_activity. This lets us supply an %% independent numbering scheme. \definehead [base_week] [chapter] \definehead [base_activity] [section] \definehead [base_presentation] [section] \setuphead [part] [sectionresetset=default] \setuphead [base_week] [number=yes,alternative=activityhead, sectionsegments=chapter] \setuphead [base_activity] [number=yes,alternative=activityhead, sectionsegments=section,ownnumber=yes, before={\blank[line]\incrementcounter[activity]},] \setuphead [base_presentation] [number=yes,alternative=activityhead, sectionsegments=section,ownnumber=yes, before={\blank[line]\incrementcounter[presentation]},] %% (2) define a placement method for headings that omits the title. \defineheadplacement[activityhead][vertical]#1#2{% \labeltext{\currenthead}\hskip\numberheaddistance #1% } %% (3) heading text is static so we use labels. %% The following line is cramped due to an exception in option %% parsing. %% Cf. http://archive.contextgarden.net/message/20120611.090327.dd9b1347.en.html \setuplabeltext[base_week=Week,base_activity=Activity,base_presentation=Presentation] %% (4a) define counters for use with the “presentation” and “activity” %% heads. \definecounter [presentation] [start=0,way=text] \definecounter [activity] [start=0,way=text] %% (4b) define a reset trigger for the part structural. \definestructureresetset [default] [0] [0] %% (5) define a set of wrappers. These compensate for the fact that you %% can’t have a simple structure head without the mandatory %% argument. We start with a plain one. \define \week{\base_week{}} %% The “\presentation” and “\activity” macros need special treatment %% to make it respect the separate counter. \define \activity{\base_activity {\rawcountervalue[activity]} \empty} \define\presentation{\base_presentation{\rawcountervalue[presentation]}\empty} %% (6) side effect: the table of contents needs a placement method on %% its own in order to conform with the requirements. This step is %% optional if you don’t care for a toc. \unexpanded\def\week_list#1#2#3{% \blank[line]% {\tfa\word\sc\labeltext{\currentlist}}% \space#1\hfill#3\par } \unexpanded\def\activity_list#1#2#3{% \hskip\emwidth \labeltext{\currentlist}% \space#1\hfill#3\par } \setuplist [base_week] [alternative=command,command=\week_list] \setuplist [base_activity] [alternative=command,command=\activity_list] \setuplist [base_presentation] [alternative=command,command=\activity_list] \protect \starttext \placelist[base_week, base_activity, base_presentation]\page \part {My Life ...} \week \activity Dear diary. Today I was pompous and my sister was crazy. \activity This is some text. \activity This is some text. \week \activity This is some more text. \presentation This is some more text. \activity This is some more text. \activity This is some more text. \part{... the Exciting Story of a Great Man} \week \activity This is yet some more text. \presentation This is yet some more text. \activity This is yet some more text. \stoptext </code></pre> <p><img src="https://i.imgur.com/zDi9G.png" alt="example"/></p> </div><div class="mt-3 mb-3 border-bottom"><h5><a href='https://imathworks.com/tex/tex-latex-every-page-after-chapter-page-is-indented/'>[Tex/LaTex] Every page after ‘chapter page’ is indented</a></h5></div><div class='bg-transparent mb-3'> <p>You would be better to use the geometry package than setting page size by hand but as it is you have increased <code>\textwidth</code> on all pages but only reduced <code>\oddsidemargin</code> so even pages are shifted off too far you need to set <code>\evensidemargin</code>. </p> <p>Also <code>\textheight</code> should be <code>\topskip</code> + an integer multiple of <code>\baselineskip</code> otherwise a large block of text with no vertical space on the page can never fit on the page.</p> <p>A possible set of settings for <code>geometry</code>, leaving to the package to compute the other parameters:</p> <pre><code>\documentclass[12pt]{book} \usepackage[ a4paper, textwidth=175mm, textheight=225mm, heightrounded, ]{geometry} \usepackage[T1]{fontenc} % <-- don't forget \usepackage[utf8]{inputenc} \usepackage[dutch]{babel} \usepackage{graphicx} \usepackage{pgfplots} \usepackage[ backend=biber, style=alphabetic, sorting=ynt, ]{biblatex} \addbibresource{references.bib} \usepackage[hidelinks]{hyperref} \setlength{\parskip}{1.2ex} % space between paragraphs \setlength{\parindent}{0cm}%2em} % amount of indention \begin{document} </code></pre> </div></div></div></div> </div> <div class="col-12 col-md-4"> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-8728145350222960" data-ad-slot="1340983829" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> <div class='mt-3 ml-4 border-bottom border-success'><h6><span>Related Question</span></h6></div><ul class='list-group list-group-flush'><li class="list-group-item"><a href='https://imathworks.com/tex/customize-chapter-title-in-context/'>Customize chapter title in context</a></li></ul> </div> </div> <footer class="entry-footer"> </footer> </article> </div> </div> </div> </main> </div> </div> <footer id="colophon" class="site-footer"> <div class="site-info"> </div> </footer> </div> <script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/esm/popper.min.js?ver=1.14.7' id='popper-js'></script> <script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/js/bootstrap.min.js?ver=4.3.1' id='bootstrap4-js'></script> <script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-AMS_HTML-full&ver=2.7.5' id='mathJax-script-js'></script> <script type='text/javascript' src='https://imathworks.com/wp-includes/js/comment-reply.min.js?ver=5.9.9' id='comment-reply-js'></script> </body> </html>