HeaderStyle

HeaderStyle

is an option for Dataset that specifies the style to use for headers.

Details

  • The setting for HeaderStyle can be any style specification, or a pure function returning the same.
  • With the option HeaderStylestyle, the specified style will be used for all headers in the dataset.
  • HeaderStyleAutomatic specifies a style that follows the system appearance for headers.
  • The settings for HeaderStyle can be given as follows to apply separately to different items:
  • specapply spec to all headers
    {spec1,spec2,…,specn}apply speck to headers at dataset level k
    {spec_(1),spec_(2),...,spec_(n),rules}also allow explicit rules for individual headers
  • The speck can have the following forms:
  • {s1,s2,…,sn}use s1 through sn; then use defaults
    {{c}}use c in all cases
    {{c1,c2}}alternate between c1 and c2
    {{c1,c2,…}}cycle through all ci
    {s,{c}}use s, then repeatedly use c
    {s1,{c},sn}use s1, then repeatedly use c, but use sn at the end
    {s1,s2,…,{c1,c2,…},sm,…,sn}use the first sequence of si at the beginning, then cyclically use the ci, then use the last sequence of si at the end
    {s1,s2,…,{},sm,…,sn}use the first sequence of si at the beginning and the last sequence at the end
  • Rules have the form ispec, where i specifies a position in the dataset.
  • Positions can be patterns.
  • The position of a header can be read at the bottom of a dataset when you hover over the header.
  • If the left-hand side of a rule is not a list, the setting is applied to any position that contains the left-hand side as a key or index.
  • A pure function f that returns a style can be used in place of any style. The setting is given by f[item,position,dataset].

Examples

open allclose all

Basic Examples  (3)

Make all headers bold:

Make headers at successive levels different colors:

Style individual headers:

Generalizations & Extensions  (3)

Style all headers that have a given name:

Use a pattern in a position:

Obtain the header style from a function applied to the header value:

Possible Issues  (1)

Styles in a list apply to headers at successive levels of the dataset:

To apply multiple styles at a single dataset level, wrap them with Directive:

Wolfram Research (2020), HeaderStyle, Wolfram Language function, https://reference.wolfram.com/language/ref/HeaderStyle.html.

Text

Wolfram Research (2020), HeaderStyle, Wolfram Language function, https://reference.wolfram.com/language/ref/HeaderStyle.html.

CMS

Wolfram Language. 2020. "HeaderStyle." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/HeaderStyle.html.

APA

Wolfram Language. (2020). HeaderStyle. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/HeaderStyle.html

BibTeX

@misc{reference.wolfram_2024_headerstyle, author="Wolfram Research", title="{HeaderStyle}", year="2020", howpublished="\url{https://reference.wolfram.com/language/ref/HeaderStyle.html}", note=[Accessed: 21-November-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_headerstyle, organization={Wolfram Research}, title={HeaderStyle}, year={2020}, url={https://reference.wolfram.com/language/ref/HeaderStyle.html}, note=[Accessed: 21-November-2024 ]}