Difference between revisions of "Help:Tables"

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===Negative numbers===
 
===Negative numbers===
 
If you start a cell on a new line with a negative number with a minus sign (or a parameter that evaluates to a negative number), your table can get broken, because the characters <code>|-</code> will be parsed as the wiki markup for table row, not table cell. To avoid this, insert a space before the value (<code>| -6</code>) or use in-line cell markup (<code>|| -6</code>).
 
If you start a cell on a new line with a negative number with a minus sign (or a parameter that evaluates to a negative number), your table can get broken, because the characters <code>|-</code> will be parsed as the wiki markup for table row, not table cell. To avoid this, insert a space before the value (<code>| -6</code>) or use in-line cell markup (<code>|| -6</code>).
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[[Category:Help]]

Latest revision as of 09:57, 14 July 2009

Help:Contents

As a general rule, it is best to avoid using a table unless you need one. Table markup often complicates page editing.

Wiki table markup summary

{|
table start
|+
table caption, optional; only between table start and first table row
|-
table row, optional on first row -- wiki engine assumes the first row
! 
table header cell, optional. Consecutive table header cells may be added on same line separated by double marks (!!) or start on new lines, each with its own single mark (!).
|
table data cell, required! Consecutive table data cells may be added on same line separated by double marks (||) or start on new lines, each with its own single mark (|).
|}
table end
  • The above marks must start on a new line except the double || and !! for optionally adding consecutive cells to a line. However, blank spaces at the beginning of a line are ignored.
  • XHTML attributes. Each mark, except table end, optionally accepts one or more XHTML attributes. Attributes must be on the same line as the mark. Separate attributes from each other with a single space.
    • Cells and caption (| or ||, ! or !!, and |+) hold content. So separate any attributes from content with a single pipe (|). Cell content may follow on same line or on following lines.
    • Table and row marks ({| and |-) do not directly hold content. Do not add pipe (|) after their optional attributes. If you erroneously add a pipe after attributes for the table mark or row mark the parser will delete it and your final attribute if it was touching the erroneous pipe!
  • Content may (a) follow its cell mark on the same line after any optional XHTML attributes or (b) on lines below the cell mark. Content that uses wiki markup that itself needs to start on a new line, such as lists, headings, or nested tables, must be on its own new line.
  • Escaping to insert a pipe (|) character into a table use the <nowiki> markup

Basics

The following table lacks borders and good spacing but shows the simplest wiki markup table structure.

You type You get
{|
|Apples
|10
|-
|Oranges
|7
|}
Apples 10
Oranges 7

The cells in the same row can be listed on one line separated by ||.

Extra spaces within cells in the wiki markup, as in the wiki markup below, do not affect the actual table rendering.

You type You get
{|
|Apples    || 10   
|-
|Oranges   || 7   
|}
Apples 10
Oranges 7

Table headers

Table headers can be created by using "!" instead of "|" and "!!" instead of "||". Headers usually show up bold and centered by default.

You type You get
{|
! Item !! Amount !! Cost
|-
|Apples || 10 ||7.00
|-
|Oranges || 4 ||3.00
|-
!Total || !! 10.00
|}
Item Amount Cost
Apples 10 7.00
Oranges 4 3.00
Total 10.00

Caption

A table caption can be added to the top of any table as follows.

You type You get
{|
|+Food complements
! Item !! Amount !! Cost
|-
|Apples || 10 ||7.00
|-
|Oranges || 4 ||3.00
|-
!Total || !! 10.00
|}
Food complements
Item Amount Cost
Apples 10 7.00
Oranges 4 3.00
Total 10.00

Wikitable Class

Standard formatting can be achieved with the "wikitable" class

You type You get
{| class="wikitable"
|+ Food complements
! Item || Amount || Cost
|-
!Apples 
| 10 ||7.00
|-
!Oranges 
| 4 ||3.00
|-
!Total 
| 
! 10.00
|}
Food complements
Item Amount Cost
Apples 10 7.00
Oranges 4 3.00
Total 10.00


Alignment

Tables float with the text. To fix the location use use 100% width tables.

You type
{| class="wikitable" width=100%
|+ Food complements
! Item || Amount || Cost
|-
!Apples 
| 10 ||7.00
|-
!Oranges 
| 4 ||3.00
|-
!Total 
| 
! 10.00
|}
You get
Food complements
Item Amount Cost
Apples 10 7.00
Oranges 4 3.00
Total 10.00

Caveats

Negative numbers

If you start a cell on a new line with a negative number with a minus sign (or a parameter that evaluates to a negative number), your table can get broken, because the characters |- will be parsed as the wiki markup for table row, not table cell. To avoid this, insert a space before the value (| -6) or use in-line cell markup (|| -6).