Tagging Tables
Table, Table Wrapper, and Table Group
There are three similar sounding elements for tagging tables:
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The element containing the rows and columns of tabular table material. The Tag
Suite default element is <table>, taken
from the NISO JATS
XHTML-inspired table model. The OASIS XML Exchange (CALS) table model can also be used with the Tag Suite,
and the name for the similar rows-and-columns element is typically “<oasis:table>”.
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Element that represents the complete table. This includes the row-and-column
data, table number, table caption including the table title, and any table footnotes or general
notes attached to the table. If the complete table includes a label (such as
“Table 3”) and it should appear in a List of Tables for the
publication, then it is tagged with the <table-wrap> element.
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A logical or display grouping of more than one complete table (<table-wrap>)
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Table Wrapper
Simply put, the <table-wrap> is a container for tables. Here is a <table-wrap> element that contains
nothing but a NISO JATS <table> element inside it:
... <table-wrap> <table frame="box"> <thead> <tr> <th>Color</th> <th>Size</th> <th>Price</th> </tr> </thead> <tbody> <tr> <td rowspan="3">Green</td> <td>small</td> <td>$3.25</td> </tr> <tr> <td>medium</td> <td>$2.25</td> </tr> <tr> <td>large</td> <td>$1.15</td> </tr> <tr> <td rowspan="3">Red</td> <td>small</td> <td>$3.25</td> </tr> <tr> <td>medium</td> <td>$5.25</td> </tr> <tr> <td>large</td> <td>$9.95</td> </tr> </tbody> </table> </table-wrap> ...
The <table-wrap> element also provides a uniform place to put information such as a table number (<label>) and table title and caption (both in <caption>). The element <table-wrap> can also contain a Table Wrapper Footer, as a place to put table footnotes and other information.
<table-wrap id="TN0.170"> <label>Table 17. </label> <caption> <title>Patient Care at End of Follow Up</title> <p>Numbers of patients receiving institutional care at the end of scheduled follow up and use of hospital beds among those allocated to day hospital or alternative services</p> </caption> <table frame="box" rules="all" cellpadding="5">...</table> <table-wrap-foot> <fn-group> <fn id="TF1-150"><p>Data not available for 1 trial.</p></fn> <fn id="TF1-151"><p>P<0.05 (random effects model).</p></fn> </fn-group> </table-wrap-foot> </table-wrap>
Nested Tables
The table models in the JATS do not allow nested tables. That is, a table cell (e.g., <td>) may not contain a table. However, table cells may contain <array>s. This allows a table cell to contain nested row/column structures but does not allow a table cell to contain tables with
caption, headers, and such.
Non-tabular Tables
It is possible that a <table-wrap> will not contain a <table> element at all, since objects that are identified
as tables need not contain tabular material. While a <table-wrap> may contain
the rows and columns of a table element as just shown (using the NISO JATS XHTML-inspired Table <table> or the OASIS XML Exchange (CALS) table model
<oasis:table>); a table may also contain:
- only one or more graphics,
- a bulleted or numbered list,
- a definition list,
- paragraphs of material, or
- a mixture of these elements.
Here is a table that has no tabular material in it because the tabular portion is represented as a graphic:
... <table-wrap id="Table-07"> <caption> <title>2008 Expenditures</title> <p>Total research expenditures by disease, 2008</p> </caption> <graphic xlink:href="totals.jpeg"> <alt-text>Distribution of research spending for major diseases.</alt-text> <object-id>314159</object-id> </graphic> <attrib>Reprinted courtesy of TableSource, Inc.</attrib> </table-wrap> ...
Here is another non-tabular table:
<table-wrap id="Table-05"> <caption> <title>Show and Tell Program</title> </caption> <list list-type="order"> <list-item><label>1.</label><p>Poodle</p></list-item> <list-item><label>2.</label><p>Persian Cat</p></list-item> <list-item><label>3.</label><p>Weaver Finches</p></list-item> <list-item><label>4.</label><p>Gecko</p></list-item> </list> <attrib>Reprinted courtesy of YourSchool.edu</attrib> <permissions> <copyright-statement>&copy; 2008</copyright-statement> </permissions> </table-wrap>
Table Group
Some complex tables may consist of a single table wrapper (Table Wrapper) containing a one or more small tables that represent one logical tabular area. For
example, one part of the display might be 3 rows by 10 columns, the next part might be 5 rows by 2
columns, and the last part may return to 10 columns for 6 more rows. Each tabular area can be tagged
with a NISO JATS Table (NISO JATS table model) element (or an OASIS XML Exchange (CALS) table model <oasis:table> element), and paragraphs of text may be interspersed between the
tabular material. In the United States, tax tables are frequently this type of table.
In the example just explained, three Table (NISO JATS table model)s equaled one Table Wrapper and not a Table Wrapper Group. A Table Wrapper Group
contains multiple Table Wrapper elements,
each of which typically has a table number, caption or title, and tabular material.
The entire group may also be given a collective label and caption. Table groups are
frequently a print artifact, where several tables are clustered on a page for better
display. The Table Wrapper Group element
has been provided to capture these as well as semantic or logical groupings. Here is
an abbreviated Table Wrapper Group:
... <table-wrap-group id="Table-grp-06"> <label>Special Section II.</label> <caption><title>Tables 3 through 5</title></caption> <table-wrap id="Table-03"> <label>Table 3</label> <caption><p>...</p></caption> <graphic xlink:href="..."></graphic> </table-wrap> <table-wrap id="Table-04"> <label>Table 4</label> <caption><p>...</p></caption> <graphic xlink:href="..."></graphic> </table-wrap> <table-wrap id="Table-05"> <label>Table 5</label> <caption><p>...</p></caption> <graphic xlink:href="..."></graphic> </table-wrap> </table-wrap-group> ...
Table Formatting
By default, this Tag Set uses the NISO JATS XHTML-inspired table model (based on and designed to be
converted easily to the XHTML 1.1 Table Model). This model matches the needs of web browsers and can support (at least roughly)
most table
display formatting.
Format is indicated in one of two ways in NISO JATS default table: using multiple single-purpose attributes for simple
formatting, or making more complex formats using the @style attribute.
Simple Formatting with Attributes
Simple format information can be indicated with the following attributes:
- @border controls borders around all of the cells in a table,
- @cellpadding controls space between the text and any borders in the cells of the table,
- @cellspacing controls space between the cells of the table,
- @frame controls the “box” around the whole table,
- @rules controls rules between groupings in the table (rows, columns, column groups, etc.), and
- @width controls the width of the entire table or columns within the table.
To illustrate use of the @rules attribute, here
is a table with rules on the rows:
... <table-wrap> <table rules="rows"> <thead> <tr> <th>Color</th> <th>Size</th> <th>Price</th> </tr> </thead> <tbody> <tr> <td rowspan="3">Green</td> <td>small</td> <td>$3.25</td> </tr> <tr> <td>medium</td> <td>$2.25</td> </tr> <tr> <td>large</td> <td>$1.15</td> </tr> <tr> <td rowspan="3">Red</td> <td>small</td> <td>$3.25</td> </tr> <tr> <td>medium</td> <td>$5.25</td> </tr> <tr> <td>large</td> <td>$9.95</td> </tr> </tbody> </table> </table-wrap> ...
Here is the same table, without the rules, to demonstrate use of the @frame attribute:
... <table-wrap> <table frame="box"> <thead> <tr> <th>Color</th> <th>Size</th> <th>Price</th> </tr> </thead> <tbody> <tr> <td rowspan="3">Green</td> <td>small</td> <td>$3.25</td> </tr> <tr> <td>medium</td> <td>$2.25</td> </tr> <tr> <td>large</td> <td>$1.15</td> </tr> <tr> <td rowspan="3">Red</td> <td>small</td> <td>$3.25</td> </tr> <tr> <td>medium</td> <td>$5.25</td> </tr> <tr> <td>large</td> <td>$9.95</td> </tr> </tbody> </table> </table-wrap> ...
And here is the @border
attribute:
... <table-wrap> <table border="1"> <thead> <tr> <th>Color</th> <th>Size</th> <th>Price</th> </tr> </thead> <tbody> <tr> <td rowspan="3">Green</td> <td>small</td> <td>$3.25</td> </tr> <tr> <td>medium</td> <td>$2.25</td> </tr> <tr> <td>large</td> <td>$1.15</td> </tr> <tr> <td rowspan="3">Red</td> <td>small</td> <td>$3.25</td> </tr> <tr> <td>medium</td> <td>$5.25</td> </tr> <tr> <td>large</td> <td>$9.95</td> </tr> </tbody> </table> </table-wrap> ...
Formatting with Style
All the tables just shown are all relatively simple formats. More complex table
formatting is done using the @style
attribute, which contains CSS instructions. Key to understanding how the CSS in tables
works is that instructions on smaller portions override those on larger portions of
the table. For example, if a background color is provided for the whole table and
different background color is specified for a row, everything in the table will be the
first background color except that row, which will have the second. Similarly, if
borders are specified for a <colgroup>,
they will apply to the whole <colgroup>
unless a different border is specified for one cell (<th> or <td>), in which
case that cell will have the override.
Here is a sample, in code and image, of a relatively complex table, formatted
using a variety of techniques including CSS in the @style attribute, controlling alignment with the @align attribute, and a few spans.
... <table-wrap> <table rules="groups" > <colgroup style="border-right: hidden"><col/></colgroup> <colgroup style="border-right: solid thin"><col/><col/><col/></colgroup> <colgroup><col/><col/><col/></colgroup> <tr> <th></th> <th colspan="3" style="border-bottom: solid">1974-75</th> <th colspan="3" style="border-bottom: solid">1983-84</th> </tr> <tr> <th></th> <th style="border-bottom: solid thin">Public</th> <th style="border-bottom: solid thin">Private</th> <th style="border-bottom: solid thin">Total</th> <th style="border-bottom: solid thin">Public</th> <th style="border-bottom: solid thin">Private</th> <th style="border-bottom: solid thin">Total</th> </tr> <tr> <td style="background: lightgrey" colspan="7">Preschool</td> </tr> <tr> <td>Schools</td> <td align="right">n.a.</td> <td align="right">n.a.</td> <td align="right">n.a.</td> <td align="right">n.a.</td> <td align="right">n.a.</td> <td align="right">n.a.</td> </tr> <tr> <td>Teachers</td> <td align="right">2,986</td> <td align="right">1,252</td> <td align="right">4,238</td> <td align="right">15,440</td> <td align="right">4,008</td> <td align="right">19,448</td> </tr> <tr> <td>Enrollment</td> <td align="right">108,500</td> <td align="right">43,800</td> <td align="right">152,300</td> <td align="right">442,700</td> <td align="right">80,600</td> <td align="right">523,300</td> </tr> <tr> <td style="background: lightgrey" colspan="7">Primary</td> </tr> <tr> <td>Schools </td> <td align="right">9,982</td> <td align="right">1,116</td> <td align="right">11,098</td> <td align="right">11,397</td> <td align="right">1,285</td> <td align="right">12,682</td> </tr> <tr> <td>Teachers</td> <td align="right">54,276</td> <td align="right">8,922</td> <td align="right">63,198</td> <td align="right">71,454</td> <td align="right">9,176</td> <td align="right">80,630</td> </tr> <tr> <td>Enrollment</td> <td align="right">1,764,100</td> <td align="right">226,000</td> <td align="right">1,990,100</td> <td align="right">2,338,400</td> <td align="right">303,000</td> <td align="right">2,641,400</td> </tr> <tr> <td style="background: lightgrey" colspan="7">Secondary</td> </tr> <tr> <td>Schools</td> <td align="right">735</td> <td align="right">438</td> <td align="right">1,173</td> <td align="right">1,486</td> <td align="right">710</td> <td align="right">2,196</td> </tr> <tr> <td>Teachers</td> <td align="right">24,222</td> <td align="right">9,133</td> <td align="right">33,355</td> <td align="right">41,350</td> <td align="right">13,964</td> <td align="right">55,314</td> </tr> <tr> <td>Enrollment</td> <td align="right">513,100</td> <td align="right">118,100</td> <td align="right">631,200</td> <td align="right">786,200</td> <td align="right">177,200</td> <td align="right">963,400</td> </tr> <tr> <td style="background: lightgrey" colspan="7">Higher Education</td> </tr> <tr> <td>Schools</td> <td align="right">26</td> <td align="right">12</td> <td align="right">38</td> <td align="right">535</td> <td align="right">275</td> <td align="right">805</td> </tr> <tr> <td>Teachers</td> <td align="right">13,228</td> <td align="right">1,376</td> <td align="right">14,604</td> <td align="right">24,633</td> <td align="right">4,072</td> <td align="right">28,705</td> </tr> <tr> <td>Enrollment</td> <td align="right">172,100</td> <td align="right">21,200</td> <td align="right">193,300</td> <td align="right">320,800</td> <td align="right">63,900</td> <td align="right">384,700</td> </tr> </table> </table-wrap> ...
Table Models
By default, this Tag Set uses the NISO JATS (XHTML-inspired) table model, as defined in NISO
JATS version of the XHTML Table
Module. However, this Tag Set can be set up to use the OASIS XML Exchange (CALS) table model either instead of or in addition
to the XHTML-inspired model.
The modules that enable the OASIS XML Exchange (CALS) table model are distributed as part of this Tag
Set, and a separate OASIS XML Exchange (CALS) Table Tag Library (jats.nlm.nih.gov/options/OASIS/tag-library/19990315/index.html) describes the OASIS XML Exchange (CALS) table model elements, attributes, and parameter
entities.
To enable two different tagging schemes for the same material (row and column tables), all OASIS XML Exchange (CALS) table
model elements have been given a namespace and
use the namespace prefix “oasis”. Since DTDs do not really work with namespaces, the namespace prefix has been
hard-coded into the names of the OASIS table elements. This differentiates the two sets of table
elements, allowing both NISO JATS XHTML-inspired and OASIS XML Exchange (CALS) table models to be used together.
To illustrate how this works and for use by the user community, a separate OASIS XML Exchange
(CALS) Table Archiving DTD is available as part of this Tag Set.
It uses the OASIS XML Exchange (CALS) table elements instead of the NISO JATS XHTML-inspired table elements (filename JATS-archive-oasis-article1.dtd).
NISO JATS XHTML-inspired Table. The modules that
implement the NISO JATS table coding are:
- NISO JATS XHTML-inspired Table Setup Module (JATS-XHTMLtablesetup1.ent) Sets all parameter entities
needed by the NISO JATS version of the XHTML Table Module, and then references (invokes) the NISO
JATS XHTML-inspired Table Module. (See next item.)
To include the NISO JATS XHTML-inspired Table model in a tag set, a DTD must reference this module.
- NISO JATS XHTML-inspired Table Module (xhtml-table-1.mod) The public XML DTD version of the XHTML Tables Module. This contains the NISO JATS version of the W3C-developed XHTML table model. This module is invoked from the module %XHTMLtablesetup.ent;. (See previous item.)
- NISO JATS XHTML-inspired Table Style Module (xhtml-inlstyle-1.mod) Declares the @style attribute, which supports inline style markup for elements such as <td> and <tr> within NISO JATS table model.
OASIS CALS Tables. The XHTML-inspired table
model is the NISO JATS default, but versions of the models (DTD, XSD, and RNG) have been provided for archives and publishers
that use OASIS XML Exchange (CALS) table model. As set up, these are separate models that define
both the XHTML-inspired and the OASIS
Exchange (CALS) table models, with the OASIS table model namespaced (prefix “oasis”) to prevent name
clashes. An XML expert can readily turn off the XHTML-based table model, and (once there is only the single
OASIS
Exchange (CALS) table model, remove the OASIS namespace using NISO JATS-provided overrides (the
OASIS Table Module need not be touched). The following files are necessary to use the OASIS
Exchange (CALS) table model:
- Journal Archiving and Interchange DTD with OASIS Tables (JATS-archive-oasis-article1.dtd) Complete Archiving (Green) DTD for the creation of new journal articles. This extension of the Journal Archiving and Interchange DTD replaces the Archiving DTD module and invokes both the XHTML table and the CALS OASIS XML Exchange Table models.
- Journal Archiving and Interchange DTD with OASIS Tables DTD-Specific Modules (JATS-archive-oasis-custom-modules1.ent) The DTD-specific modules for the new Journal Archiving and Interchange DTD that includes OASIS Tables.
- Journal Archiving and Interchange DTD with OASIS Tables Customize Classes Module (JATS-archivecustom-classes1.ent) The class overrides for this new DTD. These repeat all the class overrides of the regular Archiving DTD, with the table and alternative classes modified to use the OASIS XML Exchange (CALS) table elements. There is no equivalent mix override module, because this DTD uses the ordinary Archiving mix overrides.
- JATS OASIS Table Namespace Module (JATS-oasis-namespace1.ent) This modules establishes the prefix for the OASIS Exchange (CALS) table model, by default “oasis” (“<oasis:table”)
- JATS Namespaced OASIS XML Table Setup Module (JATS-oasis-tablesetup1.ent) Sets all parameter entities needed by the OASIS XML Exchange (CALS) table model, and then references (invokes) the OASIS XML Exchange (CALS) Table Model Module. for declarations of all the table elements.
- OASIS XML Exchange (CALS) Table Model Module (oasis-exchange.ent) This is the OASIS XML Exchange (CALS) table model DTD fragment, modified to use the OASIS namespace and the “oasis” prefix. This module is invoked from the JATS OASIS XML Exchange (CALS) setup module.