In Tableau, the `PI`

function is a number function that returns the mathematical constant π (pi). Pi is a mathematical constant that represents the ratio of the circumference of a circle to its diameter and is approximately equal to 3.14159.

The `PI`

function does not require any arguments or parameters. It simply returns the value of π.

Here's an example to illustrate the usage of the `PI`

function in Tableau:

To calculate the circumference of a circle with a known radius, you can use the `PI`

function in conjunction with other mathematical operations. Let's say you have a dataset with a column called "Radius" that contains the radius values of different circles:

Radius |
---|

5.0 |

7.5 |

10.0 |

To calculate the circumference of each circle using the `PI`

function, you can create a calculated field in Tableau:

- Right-click on a blank area in the "Data" pane in Tableau.
- Select "Create Calculated Field."
- In the formula editor, enter the following expression:

```
2 * PI() * [Radius]
```

- Click "OK" to create the calculated field.

The calculated field utilizes the `PI`

function to retrieve the value of π and then performs the necessary calculations to determine the circumference of each circle.

The resulting dataset will be as follows:

Radius | Circumference |
---|---|

5.0 | 31.4159 |

7.5 | 47.1239 |

10.0 | 62.8319 |

In this example, the `PI`

function is used to calculate the circumference of each circle by multiplying the radius with 2π (2 times pi).

The `PI`

function is commonly used in mathematical calculations and can be combined with other mathematical functions or operators to perform complex calculations involving circles, trigonometry, and geometry. By utilizing the `PI`

function in Tableau, you can easily incorporate this mathematical constant into your calculations and visualizations.

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