> For the complete documentation index, see [llms.txt](https://docs.videc.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.videc.de/june5-3.7/en/webanwendung/sichten/diagramme/tortendiagramm.md).

# Pie Chart

The description for creating, deleting, and editing the pie chart can be found in the chapter [Diagrams](/june5-3.7/en/webanwendung/sichten/diagramme.md).

## Setting Options for Measurement Variable

These settings are available via the auxiliary button of the respective measurement variable. The relevant measurement variables are listed in the list view under the heading *Selected*.

* Measurement Variable Color in Pie Chart
* [Measurement Variable Exchange](/june5-3.7/en/webanwendung/sichten/messgroessenaustausch.md)

## Properties

These settings can be found in the [Properties window](/june5-3.7/en/webanwendung/sichten/oberflaeche-und-handling.md).

* Name
* Identification
* [Start Time](/june5-3.7/en/webanwendung/sichten/startzeit.md) *(automatically with current timestamp, absolute or relative)*
* Start Database
* Data Label Format (The type of display of all pie slice labels)
* Display in 3D
* Draw as Donut
* Legend (Hide or Change Position: left, top, right, bottom)
* Font Size (Determines the font size of the text on the pie slices)
* Reduced Display (Shows or hides axis labels and legends)
* Widget Border Color (*only in Dashboard possible!*)
* Widget Border Width (*only in Dashboard possible!*)

## Ad Hoc Settings

These settings are located on the vertical toolbar. The vertical toolbar is positioned on the left side of the object. The buttons on the vertical toolbar are disabled when the Properties window is opened!

The vertical toolbar provides buttons for the following settings.

* Refresh *(loads newly occurred values from the data source).*
* Database *(opens a dialog in which the data source for all measurement variables can be changed. For example, it is possible to switch between daily or weekly data in the value display).*
* Set Time *(opens a modal window in which the time point/range can be adjusted).*
* Previous Time Interval
* Next Time Interval
* CSV Export (See chapter [Data Export as CSV](/june5-3.7/en/webanwendung/sichten/datenexport-als-csv.md))
* Current Control (Determines the function type of the mouse pointer. For example: Standard, Pan, or Zoom)
* Display (Determines the display of the object in combination with the value table)

## Display

The display of a pie chart *(pie or circle chart)* is done via measurement variables. Select measurement variables from the object list (using the selection button or drag and drop) (See: [Selection and Deselection of Objects](/june5-3.7/en/webanwendung/listenansicht/an-und-abwahl-von-objekten.md)). The pie chart shows:

* Measurement variables as a percentage of a whole.
* A description with the information "measurement variable, percentage value, and absolute value" when the mouse pointer is held over a pie sector.

{% hint style="info" %}

* Only measurement variables with numerical values can be inserted into a pie chart!
* If the percentage for a measurement variable cannot be calculated because its value cannot be converted to a numerical value, no pie section is displayed for the affected measurement variable in the diagram. Likewise, the values of these measurement variables are not displayed in the table next to or below the diagram.
  {% endhint %}


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