PI: formula
The purpose of a formula is to fetch a formula in Image-, LaTeX- or MathML-form. The former two is presented as img-elements, while the latter is presented as MathML according to HTML5. LaTeX-formulas are translated to img on the fly with either WXT's internal functions based on JLaTeXMath [13] or with Google Charts Formulas [14] .
<?_wxt formula id=""?>
The parameters are:
| id (mandatory) | The formula we want to fetch. The formula is supposed to be defined in a formula file, Formulas , or an odtformula file , ODTFormulas . Alternatively this value will identify the formula introduced in sourse or location, se below. |
| type (optional) | This is mandatory if source or location is set. Possible values are image, latex, google or mathml. |
| location (optional) | The location may point to a file of one out of the 4 types: An image file (png,gif,jpg), a file containing a LaTeX-expression, a file containing LaTex for google or a file containing a MathMl-formula. |
| source (optional) | The source may contain LaTeX description of a formula according to the version used by Google Charts Features [15] (type: google) or LaTex as handled by JLaTeXMath [13] (type: latex). It is sometimes possible, but not adviced to include mathml-source |
| subtext (optional) | Any string describing the formula. Defaults to id. |
| color (optional) | Must be specified as 6 hexdigits (#FF0000) |
| backcolor (optional) | Must be specified as 6 hexdigits (#FF0000) |
| size (optional) | Applies to TeX-formulas. You may spesify a size for LaTex or google-Latex: tiny, small,large or huge. |
| style (optional) | Any CSS that will apply to the generated image-element. |
Styleclass(es) describing this PI is: wxtformula, and for MathML-formulas wxtmathml See distributed std styles.
If both source and location is set, source is used.
More about formulas in Formulas .
Examples:
<div> <?_wxt formula id="_formula1"?> </div> <div> <?_wxt formula id="f2" type="latex" size="large" source="B(t)=\sum_{i=0}^{n}B_{i}^{n}t^{i}(1-t)^{n-i}P_{_{i}}"?> </div> <div> <?_wxt formula id="f3" size="small" color="#FFFF00"?> </div>