A **Calculation** is an item on the page that is created using R code. Some Calculations are built-in analyses and visualizations from the menu. You can also create custom Calculations to create custom outputs on a page. Calculations are denoted with a small **R** icon in the **Pages** pane, and will always have **Properties > R CODE** in the **object inspector**.

## Technical details

### The roles of Calculations in Displayr

A *Calculation* performs two related roles within Displayr. They can be used as:

- An output to be displayed in the Report -- that is, the results of a calculation appear on a Page.
- An input to other items -- typically for this, they will be values or a table that can be referred to by other
*Calculations*and*Variables*constructed using R.

### Creating a Calculation

*Calculations* are created by:

- Selecting
**Calculation > Custom Code**and entering code in the**R CODE**box in the Object Inspector and pressing**Calculate**. - Choosing options from the menus, many of which are the results of
*Calculations*.

See, How to Use R in Displayr for more detail.

### Appearance of a Calculation

A *Calculation* can appear as different types, see Calculation Types.

## Reference

From the Displayr release of the 7th June 2021, an *R Output* is referred to as a **Calculation** or **Custom Calculation**.