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{{Achtung|Diese Seite wurde aus der [[:en:Template:Pie chart|englischen Wikipedia]] übertragen und wurde bisher noch nicht übersetzt!}}

== Verwendung ==
The labels and values of up to ten slices may be specified. All the parameters for three slices are included below; to include more slices, copy the code for one of the others, changing the digit at the end of each parameter name.
<pre><nowiki>
{{Kreisdiagramm
| Ausrichtung = 
| Titel = 
| Andere = 
| Name1 =remember
| Wert1 =16.6
| Farbe1 =2
| Name2 =understand
| Wert2 =16.6
| Farbe2 =3
| Name3 =apply
| Wert3 =16.6
| Farbe3 =5
| Name4 =analyse
| Wert4 =16.6
| Farbe4 =6
| Name5 =evaluate
| Wert5 =16.6
| Farbe5 =9
| Name6 =design
| Wert6 =16.6
| Farbe6 =10
}}
</nowiki></pre>

* option "<code>Ausrichtung</code>" specifies which side of the page the chart is floated to and defaults to <code>right</code>, as with image files. To make the chart appear on the ''left'' side of the page, specify <code>Ausrichtung=left</code>.
* "<code>Titel</code>" is a string of text that appears on a line just before the legend.
* option "<code>Andere</code>", if specified, will cause an „Andere“ item to appear in the legend.
* each "<code>Name''N''</code>" is a string of text that appears in the legend entry for a slice. Omitting it will cause a legend entry to not be shown for that slice.
* each "<code>Wert''N''</code>" is the percentage that the slice represents. Do ''not'' include the percent sign. Also note that it is shown in the legend as written (just after the label), without any rounding or other reformatting.
* each "<code>Farbe''N''</code>" is a [[:en:Web colors|CSS color code or name]]. If omitted, it will default to the following hues:
::{|
| valign=top style="padding-right:1em"|
: 1. {{Farblegende|red|red}}
: 2. {{Farblegende|green|green}}
: 3. {{Farblegende|blue|blue}}

| valign=top style="padding-right:1em"|
: 4. {{Farblegende|yellow|yellow}}
: 5. {{Häkchen|{{Farblegende|fuchsia|fuchsia}} }}
: 6. {{Farblegende|aqua|aqua}}

| valign=top style="padding-right:1em"|
: 7. {{Farblegende|brown|brown}}
: 8. {{Häkchen|{{Farblegende|orange|orange}} }}

| valign=top |
: 9. {{Farblegende|purple|purple}}
: 10. {{Farblegende|sienna|sienna}}
|}

=== Limitations ===
* '''The template does not render correctly on mobile devices.''' See [http://en.m.wikipedia.org/wiki/{{FULLPAGENAMEE}} this page on the mobile site] and [[:en:User talk:PleaseStand/Archive 4#Pie chart|a user's report of this issue]].
* Minor issues with printing exist. We also need to implement a good fallback for [[:en:WP:Books|Books]].
* The values need to be percentages.
* Google Chrome and Safari do not appear to [[:en:anti-alias]] borders, so the lines are a bit jagged (this issue seems to be resolved, at least for Chrome - tested with version 26).
* No labels can be put on the slices themselves.
* Inherently, it is not possible to save a copy of the chart using the browser's "Save Image" function.

=== How it works ===
{{Kreisdiagramm
|Andere = yes
|Wert1 = 42
|label1 = One
|Wert2 = 32
|label2 = Two
|Wert3 = 12
|label3 = Three
|Wert4 = 3
|label4 = Four
|Wert5 = 2
|label5 = Five
|Wert6 = 1
|label6 = Six
}}

{{Kreisdiagramm
| Titel=[[:en:Religion in the Czech Republic]] as of 2001.
| Andere = yes
| Name1 = [[:en:Atheist]]s and [[:en:Agnosticism|agnostics]]
| Wert1 = 59
| Farbe1 = silver
| Name2 = [[:en:Catholic Church|Catholics]]
| Wert2 = 26.8
| Farbe2 = #008
| Name3 = [[:en:Protestantism|Protestants]]
| Wert3 = 2.5
| Farbe3 = #08f
}}

This is an ''experimental'' template that draws pie charts using a single image, a lot of (inline) CSS code generated by parser functions, and ''absolutely no JavaScript''. It uses a technique for [http://erezsh.wordpress.com/2008/07/31/drawing-diagonal-lines-with-css/ drawing diagonal lines in CSS] exploiting the fact that borders set on elements are [[miter join]]ed. Thus, it is possible to set one border to an opaque color, with the others fully transparent, to form a diagonal line. The angle of the line can be controlled by adjusting the widths of two adjacent borders (one of them opaque) relative to each other.

Note that in the legacy browser [[Internet Explorer 6]], applying transparent borders the standard way does not work. A [http://acidmartin.wordpress.com/2008/08/24/emulating-border-color-transparent-in-internet-explorer-6/ workaround] is used in the form of the [[:en:Wikipedia:Catalogue of CSS classes|class]] "transborder", which has been added to [[MediaWiki:Common.css]] to make this template usable.

Pie slices are drawn in clockwise order in a counterclockwise direction. These pie slices are positioned:
* Below a [[:File:Circle frame.svg|200x200px image]] having a transparent circle on a light-colored background (same as the background color used for CSS class "thumbinner")
* Inside a container element with <code>overflow: hidden;</code> set
This allows only the part of each slice that is inside the circle to be visible on the page.

Most of the code in {{Vorlage|Vorlage:Kreisdiagramm/Scheibe}} is divided into five sections, the first four corresponding to quadrants of the circle and the last to cleanly cover the case in which one slice occupies 100% of the chart.

=== Example ===
The following example of [[Vorlage:Kreisdiagramm]] generates the pie chart show at right.
<pre style="overflow:auto">
 {{Kreisdiagramm
 | Titel=[[Religion in the Czech Republic]] as of 2001.
 | Andere = Ja
 | Name1 = [[Atheist]]s and [[Agnosticism|agnostics]]
 | Wert1 = 59 | Farbe1 = silver
 | Name2 = [[Catholic Church|Catholics]]
 | Wert2 = 26.8 | Farbe2 = #008
 | Name3 = [[Protestantism|Protestants]]
 | Wert3 = 2.5 | Farbe3 = #08f
 }}
</pre>

=== See also ===
* [[:en:Module:Chart]]
* [[:en:Module:Plotter]]

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