# ZoomCharts Documentation

## NetChart.settings.layout.gravity

**1.17.0**.

For dynamic layout, settings for gravity that pulls all nodes together.

#### Properties

**1.17.0**.

The object affected by the gravity effect in the dynamic layout.

Valid values:- node - Gravity force is applied to each node individually
- cluster - Gravity force is applied to the cluster as a whole.
- auto - Select value automatically based on data. If
`to="nearestLockedNode"`

then always selects "node"

**1.17.0**.

How to find the center of the object which is affected by gravity. Only used if `from="cluster"`

. Only non-locked nodes will be used to calculate the
center.

- weighted - Use the weighted center of the nodes, using node radius as their weight
- geometric - Use the center of a circle which is circumscribed around the nodes.

**1.17.0**.

Strength of the gravity effect. This does not have any tangible units but is rather a factor that is used in the calculations. If you want to tweak it, experiment until you find a suitable value. Larger values will mean a stronger gravity, smaller will mean weaker. Negative values are allowed and will reverse the effect, but are unlikely to be useful - unlike "traditional" Newtonian gravity, this one actually gets stronger as the nodes get further away from the center, so the result of a negative value will be uncontrolled, exponential expansion. Setting to 0 disables gravity entirely.

**1.17.0**.

The object to which the gravity attracts the affected object.

Valid values:- nearestLockedNode - attract to the nearest locked node. Only valid if
`from="node"`

or`from="auto"`

. - cluster - the center of all nodes in the cluster
- clusterLockedNodes - the center of all locked nodes in the cluster
- graph - the center of all nodes in the graph
- graphLockedNodes - the center of all locked nodes in the graph

**1.17.0**.

How to find the center of the object to which the gravity attacts. Not used if `to="nearestLockedNode"`

.

- weighted - Use the weighted center of the nodes, using node radius as their weight
- geometric - Use the center of a circle which is circumscribed around the nodes.