Template:Math/doc

This subpage provides documentation for Template:Math.

This template is a wrapper for the <math> tag, which is implemented by the Math extension. It is generally preferable to use this template to display formulas as opposed to using <math> tags directly in wikitext. The primary purpose of this template is to change the default text rendering color so that formulas are legible on the wiki's dark background. This template provides some useful options for displaying formulas, such as indented and numbered blocks. Additionally, it allows parser functions and templates to be used inside of formulas.

Usage

Code {{math|2+3}} renders as: $\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}2+3$

Parameters

The following parameters are available

Parameter	Description
|formula=	Use it if formula contains = sign.
|display=	Display attribute with possible values: block: equation is rendered in its own paragraph and has indent inline: there will be no new paragraph and the operators will be rendered to consume only a small amount of vertical space not specified: no new paragraph and renders similar to block
|nr=	Activates numbered equations. Don't forget to use unique numbers. Use {{EquationNote}} to reference the numbered equation.

Basic usage

For more examples, see Template:Math/testcases.

Display

default The sum {{math |formula=\sum_{i=0}^\infty 2^{-i} }} converges to 2.	The sum $\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}\sum _{i=0}^{\infty }2^{-i}$ converges to 2.
block The sum {{math |display=block |formula=\sum_{i=0}^\infty 2^{-i} }} converges to 2.	The sum $$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}\sum _{i=0}^{\infty }2^{-i}$$ converges to 2.
inline The sum {{math |display=inline |formula=\sum_{i=0}^\infty 2^{-i} }} converges to 2.	The sum ${\textstyle \color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}\sum _{i=0}^{\infty }2^{-i}}$ converges to 2.

Advanced usage

Numbered equations

The equations can be numbered using the nr parameter. The equation can then be referenced with {{EquationNote}}. For example:

{{math|nr=1|formula=
x^2 + y^2 + z^2 = 1 
}}
Equation {{EquationNote|1}} shows the equation for an sphere centered around origo.

$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}x^{2}+y^{2}+z^{2}=1$ Equation 1 shows the equation for a sphere centered around origo.

Combining with queried data

It is possible to query data with various parser functions such as #cargo_query, #ask and other parser functions such as #expr. Which helps making sure equations stay up date even if the game changes. For example:

{{#vardefine:life_leech_rate| {{Character query|maximum_life_leech_rate_%_per_minute}} }}
{{math|formula=
Maximum Leech Rate Per Minute / 60
  =          {{#var:life_leech_rate}} / 60
  = {{#expr: {{#var:life_leech_rate}} / 60 }}
}}

yields:

$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}MaximumLeechRatePerMinute/60=1200/60=20$

Limitations

Error with multiple braces

Problem

Placing multiple opening/closing braces together (e.g. {{ or }}) if there are no closing/opening brackets, causes error. This happens because interpreter thinks they are a part of a template when in fact they are a part of a math markup. For example, the following code:

{{math|formula= DR(A, D_{raw}) = {A \over A + 10 \times D_{raw}} }}

Failed to parse (syntax error): \color[RGB]{163,141,109} DR(A, D_{raw}) = {A \over A + 10 \times D_{raw

}}

Solution

In order to prevent this either space braces:

{{math|formula= DR(A, D_{raw}) = {A \over A + 10 \times D_{raw} } }}

$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}DR(A,D_{raw})={A \over A+10\times D_{raw}}$

or use the following templates:

• {{(}} - {{)}}
• {{((}} - {{))}}
• {{(((}} - {{)))}}

{{math|formula= DR(A, D_{raw}) = {A \over A + 10 \times D_{raw{{))}} }}

$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}DR(A,D_{raw})={A \over A+10\times D_{raw}}$

Absolute value denotation

Problem

Absolute values are usually denoted |x|. However using | in templates will result in the following issue.

{{math|formula= |x| }}

$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}x$

Solution

Use \vert or {{!}}:

{{math|formula= \vert x\vert }}	$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}\vert x\vert$
{{math|formula= {{!}}x{{!}} }}	$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}|x|$

Template forces new line in lists

Problem

When using the template with unordered/ordered lists the template forces a new line.

# The highest-level talisman is counted '''three''' times, {{Math|H}}. # The middle three talismans are counted '''twice''', {{Math|[M_1, M_2, M_3]}}. # The lowest-level talisman is counted '''once''', {{Math|L}}.

The highest-level talisman is counted three times, $\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}H$. The middle three talismans are counted twice, $\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}[M_{1},M_{2},M_{3}]$. The lowest-level talisman is counted once, $\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}L$.

Solution

In order to prevent this use html lists.

<ol> <li> The highest-level talisman is counted '''three''' times, {{Math|H}}. </li> <li> The middle three talismans are counted '''twice''', {{Math|[M_1, M_2, M_3]}}. </li> <li> The lowest-level talisman is counted '''once''', {{Math|L}}. </li> </ol>

The highest-level talisman is counted three times, $\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}H$. The middle three talismans are counted twice, $\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}[M_{1},M_{2},M_{3}]$. The lowest-level talisman is counted once, $\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}L$.

See also

• Help:Displaying a formula (A detailed guide to LaTeX markup)