---
title: "PxrRadialDensity"
canonical: "https://rmanwiki-25.pixar.com/space/REN25/20416326/PxrRadialDensity"
format: markdown
---
This pattern is intended to be used with homogeneous volumes and provides a simple way to create volume falloff effects.

#### **Radius**

The radius of the gradient

#### **Density**

The maximum density of the gradient

#### **Exponent**

Controls the shape of the transition from max to min density

#### **Start**

The start position of the gradient. 0 is the center

#### **Stop**

The stop position of the gradient.  1 is the edge  / radius

#### Coordinate System

Default to the center of your object's bounding box