Différences
Ci-dessous, les différences entre deux révisions de la page.
| Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente | ||
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4_domaines_specialises:mathematiques:arguments_contre_eqnarray2 [2018/06/03 15:05] joseph.wright |
4_domaines_specialises:mathematiques:arguments_contre_eqnarray2 [2020/11/16 08:48] yannick.tanguy Suppression de la page reportée (et traduite) sur la page française. |
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| Ligne 1: | Ligne 1: | ||
| - | --- | + | ====== Why not use `eqnarray`? ====== |
| - | title: Why not use `eqnarray`? | + | |
| - | category: usage | + | |
| - | permalink: /FAQ-eqnarray | + | |
| - | --- | + | |
| - | The environment `eqnarray` is attractive for the | + | |
| + | The environment ''eqnarray'' is attractive for the | ||
| occasional user of mathematics in LaTeX documents: it seems to | occasional user of mathematics in LaTeX documents: it seems to | ||
| - | allow aligned systems of equations. Indeed it _does_ supply such | + | allow aligned systems of equations. Indeed it //does// supply such |
| things, but it makes a serious mess of spacing. In the system: | things, but it makes a serious mess of spacing. In the system: | ||
| - | ```latex | + | |
| + | <code latex> | ||
| \begin{eqnarray} | \begin{eqnarray} | ||
| a & = & b + c \\ | a & = & b + c \\ | ||
| x & = & y - z | x & = & y - z | ||
| \end{eqnarray} | \end{eqnarray} | ||
| - | ``` | + | </code> |
| - | the spacing around the "=" signs is _not_ that defined in the | + | the spacing around the "=" signs is //not// that defined in the |
| - | metrics for the font from which the glyph comes — it's | + | metrics for the font from which the glyph comes --- it's |
| - | `\arraycolsep`, which may be set to some very odd value for reasons | + | ''\arraycolsep'', which may be set to some very odd value for reasons |
| associated with real arrays elsewhere in the document. | associated with real arrays elsewhere in the document. | ||
| - | The user is far better served by the AMSLaTeX bundle, which | + | The user is far better served by the |
| - | provides an `align` environment, which is designed with | + | [[ctanpkg>amsmath|amsmath]] package, which |
| + | provides an ''align'' environment, which is designed with | ||
| the needs of mathematicians in mind (as opposed to the convenience of | the needs of mathematicians in mind (as opposed to the convenience of | ||
| - | LaTeX programmers). For this simple case (`align` and | + | LaTeX programmers). For this simple case (''align'' and |
| - | other AMSLaTeX alignment environments are capable of far greater | + | other [[ctanpkg>amsmath|amsmath]] |
| + | alignment environments are capable of far greater | ||
| things), code as: | things), code as: | ||
| - | ```latex | + | |
| + | <code latex> | ||
| \begin{align} | \begin{align} | ||
| a & = b + c \\ | a & = b + c \\ | ||
| x & = y - z | x & = y - z | ||
| \end{align} | \end{align} | ||
| - | ``` | + | </code> |
| The matter is discussed in more detail in a | The matter is discussed in more detail in a | ||
| - | [PracTeX journal paper](https://tug.org/pracjourn/2006-4/madsen/madsen.pdf) | + | [[https://tug.org/pracjourn/2006-4/madsen/madsen.pdf|PracTeX journal paper]] |
| by Lars Madsen; Stefan Kottwitz offers a | by Lars Madsen; Stefan Kottwitz offers a | ||
| - | [TeX blog entry](http://texblog.net/latex-archive/maths/eqnarray-align-environment/) | + | [[http://texblog.net/latex-archive/maths/eqnarray-align-environment/|TeX blog entry]] |
| which includes screen shots of the output, convincingly demonstrating | which includes screen shots of the output, convincingly demonstrating | ||
| the problem. | the problem. | ||
| + | |||
| + | ----- | ||
| + | |||
| + | //Source:// [[faquk>FAQ-eqnarray|Why not use `eqnarray`?]] | ||
| + | |||
| + | {{htmlmetatags>metatag-keywords=(LaTeX,usage) | ||
| + | metatag-og:title=(Why not use `eqnarray`?) | ||
| + | metatag-og:site_name=(FAQ LaTeX francophone) | ||
| + | }} | ||
