# DiagramLayoutSettingsTagHelper

## Example

``````<layout>
<grid />
</layout>
``````

## ChildTags

Tag Name Details
grid DiagramLayoutGridSettingsTagHelper

## Attributes

Attribute Type Description
end-radial-angle Double Defines where the circle/arc ends. The positive direction is clockwise and the angle is in degrees. This setting is specific to the radial tree layout.
horizontal-separation Double Either the distance between the siblings if the tree is up/down or between levels if the tree is left/right. In tipOver tree layout this setting is used only for the direct children of the root
iterations Double The number of times that all the forces in the diagram are being calculated and balanced. The default is set at 300, which should be enough for diagrams up to a hundred nodes. By increasing this parameter you increase the correctness of the simulation but it does not always lead to a more stable topology. In some situations a diagram simply does not have a stable minimum energy state and oscillates (globally or locally) between the minima. In such a situation increasing the iterations will not result in a better topology.In situations where there is enough symmetry in the diagram the increased number of iterations does lead to a better layout. In the example below the 100 iterations was not enough to bring the grid to a stable state while 300 iterations did bring all the nodes in such a position that the (virtual) energy of the diagram is a minimum.This setting is specific to the force-directed layout
layer-separation Double The height (in a vertical layout) or width (in a horizontal layout) between the layers.
node-distance Double In the force-directed layout this setting defines the optimal length between 2 nodes, which directly correlates to the state of the link between them. If a link is longer than there will be a force pulling the nodes together, if the link is shorter the force will push the nodes apart. The optimal length is more and indication in the algorithm than a guarantee that all nodes will be at this distance. The result of the layout is really a combination of the incidence structure of the diagram, the initial topology (positions of the nodes) and the number of iterations.In the layered layout it defines the minimum distance between nodes on the same level. Due to the nature of the algorithm this distance will only be respected if the the whole crossing of links and optimization does not induce a shift of the siblings.This setting is specific to the force-directed layout and layered layout
radial-first-level-separation Double Controls the distance between the root and the immediate children of the root. This setting is specific to the radial tree layout.
radial-separation Double Defines the radial separation between the levels (except the first one which is defined by the aforementioned radialFirstLevelSeparation). This setting is specific to the radial tree layout.
start-radial-angle Double Defines where the circle/arc starts. The positive direction is clockwise and the angle is in degrees. This setting is specific to the radial tree layout.
subtype DiagramLayoutSubtype The layout subtype.
tip-over-tree-start-level Double Specifies the start level when the subtype is tipOver.
type DiagramLayoutType The layout type.
underneath-horizontal-offset Double Defines the horizontal offset from a child with respect to its parent. This setting is specific to the tipOver tree layout.
underneath-vertical-separation Double Defines the vertical separation between siblings and sub-branches. This setting is specific to the tipOver tree layout.
underneath-vertical-top-offset Double Defines the vertical separation between a parent and its first child. This offsets the whole set of children with respect to its parent. This setting is specific to the tipOver tree layout.
vertical-separation Double Either the distance between levels if the tree is up/down or between siblings if the tree is left/right. This property is not used in tipOver tree layout but rather replaced with three additional ones - underneathVerticalTopOffset, underneathVerticalSeparation and underneathHorizontalOffset