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4,109 bytes added ,  12:52, 24 February 2017
example for full page floats without headers
< [[Visuals]] | [[Graphics]] | [[Using Graphics]] | [[Tables_Overview]] >
Floats are elements like tables or figures that are placed (and numbered) automatically by TeX.== Introduction ==
Floats Floating Objects (floats) are ConTeXt's "base class" for everything that uses a <tt>\placeplaced (and numbered) automatically.They are placed at an appropriate position determined by the TeX float placement algorithm..</tt> command (table, figure, own floats)The algorithm has a number of options that can influence float placement.
If you search Most options of e.g. <in the manual (such as {{cmd>|placeexternalfigure</cmd> you must look after <}}) are described using the generic {{cmd>|placefloat</cmd> in the manual! (same for <tt>\setup}}...</tt> etc.)
The float types Floats include "graphic", "figure", "table" , and "intermezzo" are readily defined. If you need more (i.e. if you need another numbering or table of something), you Additional floats can easily define your own floats with <be defined using {{cmd>|definefloat</cmd>}}.
<pretexcode>
\placefloat[place][reference]{caption}{some float}
</pretexcode>
'''place''' is one or several (comma separated) of:
<tr><td>page</td><td>on a new (empty) page</td></tr>
<tr bgcolor="#DDDDDD"><td>opposite</td><td>on the left page</td></tr>
<tr><td>90</td><td>orientation (rotation angle), both caption and contents</td></tr><tr bgcolor="#DDDDDD"><td>always</td><td>precedence over stored floats</td></tr><tr><td>force</td><td>per se here</td></tr><tr bgcolor="#DDDDDD"><td>forcesplit</td><td>per se here(For TABLES only) split tables</td></tr>
</table>
(table copied from the manual)
 
{{cmd|placefigure}} and {{cmd|placetable}} also accept the same set of options, and allow to create floating figures and captions respectively.
'''reference'''
If you don't need to refer to your float, you can leave this parameter out.
== Examples ==I will explain the examples in terms of {{cmd|placefigure}} but the same set of options are also valid for other floats. * If you do not want a caption <texcode>\placefigure[none] {} {\externalfigure[figurename]}</texcode>  * If you do not want the figure to be numbered (but still want the caption) <texcode>\placefigure [nonumber] {caption} {\externalfigure[figurename]}</texcode> * Suppose you want the figure to be placed on the right side of the page, a few lines into the paragraph, and want the rest of the paragraph to wrap around the figure <texcode>\placefigure [right,2*line] {caption} {\externalfigure[figurename]}</texcode> or  <texcode>\placefigure [right,2*hang] {caption} {\externalfigure[figurename]}</texcode> This does not work correctly at a page boundary. The <tt>line</tt> option leaves the space above the figures empty, while the <tt>hang</tt> option also wraps texts above the figure. ==Floats and columns== This special case is discussed [[Columns#Floats_and_other_limitations_of_columns|here]]. ==Floats on empty pages== There’s a way to switch off page headings at full page floats: <texcode>\startplacefigure[title=Cow,location={page,high,header}] \externalfigure[cow.pdf]\stopplacefigure</texcode> ==Protruding Floats in Double-Sided Documents== If you have a double-sided document with wide outer margins then you might want your figures to protrude into the margin. In a double-sided document you need to tell ConTeXt to decide whether to make the figure protrude to the left or the right. This can be done as follows: <texcode>\definefloat[textmarginfigure][textmarginfigures]\setupfloat[textmarginfigure][location=inner]\placetextmarginfigure{\externalfigure[figurename]}</texcode> The following code gives a full example that can be pasted into live ConTeXt: <texcode>\setuppagenumbering [alternative=doublesided]\setuplayout[location=middle,backspace=2pc, width=20pc]\definefloat[textmarginfigure][textmarginfigures]\setupfloat[textmarginfigure][location=inner]\starttext\input knuth\placetextmarginfigure[here]{}{\externalfigure[figurename][width=30pc]}\input knuth\placetextmarginfigure[here]{}{\externalfigure[figurename][width=30pc]}\input knuth\stoptext</texcode> ==Landscape Floats in a Portrait Document==Wide tables, for example, can be turned and most likely will need to be put on a separate page.<texcode>\startplacetable [location={page,90},title=Table caption] \bTABLE [textwidth=\textheight] put a wide table here... \eTABLE\stopplacetable</texcode>Both the table caption and the contents will be rotated, but not the page header and footer which remain "upright". Notice that one must set the TABLE textwidth to {{cmd|textheight}} in order for the table macros to fit properly. == Floats and section headings ==By default, section headings don'''t wrap "around" floating objects. Instead, they will be moved down as far as needed to appear below the float. This behaviour can be controlled using the <tt>aligntitle</tt> option of the {{cmd|setupheads}} or {{cmd|setuphead}} commands. == Captions ==To change the style of figure(table) captions, use {{cmd|setupcaptions}}. To use a different (e.g. abbreviated) caption in the list of floats, you can do: <texcode>\defineselector[caption][max=2,n=2]\starttext\setupselector[caption][n=1]\completelistoffigures\setupselector[caption][n=2]\placefigure[][]{\select{caption} {Short caption for list} {A rather longer caption which will appear below the figure itself}} {This is the content of the actual figure}\stoptext</texcode> Or in more recent (circa November 2011 and later) versions of ConTeXt: <texcode>\startplacefigure[title={A rather long caption},list={A short caption'''}]This is the content of the actual figure\stopplacefigure</texcode> == Flushing floats ==
You get ''no'' caption with the keyword <tt>none</tt>The command {{cmd|placefloats}} outputs all pending floats.

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