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Labeling

Scope Tab

Determines which labels should be automatically positioned.

Place Node Labels

Whether or not to place node labels. Note that only node labels that are not node internal will be placed. Use the node property dialog to assign an external model like Eight Pos to the node labels.

Place Edge Labels

Whether or not to place edge labels.

Consider Selected Features Only

Whether or not to consider only labels of node or edges that are selected.

Consider Invisible Labels

Whether or not to consider labels that are currently invisible.

Quality Tab

These options influence the overall quality of the layout.

Use Optimization

Whether or not to activate an optimized labeling algorithm. If activated the resulting layout should contain fewer labels that overlap. Activating optimization will slow down the layouter.

Optimization Strategy

The chosen optimization strategy affects the different kinds of overlaps of labels.

None
Use no optimization strategy. This will improve the runtime at the expense of quality.
Balanced
The impact of the different kinds of overlaps is balanced.
Edge Overlap
The algorithm tries to minimize the number of overlaps between labels and edges.
Node Overlap
The algorithm tries to minimize the number of overlaps between labels and nodes.
Label Overlap
The algorithm tries to minimize the number of overlaps between labels.

Allow Node Overlaps

Whether or not to allow that the labels overlap with nodes. Note that even if this feature is deactivated there is still a possibility that labels will overlap with nodes if there is not enough space or the label model is too restrictive.

Allow Edge Overlaps

Whether or not to allow labels to overlap with edges. Note that even if this feature is deactivated there is still a possibility that labels will overlap with edges if there is not enough space or the label model is too restrictive.

Use Postprocessing

Further optimization for the placement of edge labels with model Free.

Model Tab

Edge Label Model

Determines which positions will be available for the edge labels.

Free
There are no restrictions for the placement of labels.
Best
Currently equal to Free.
As Is
Uses the individual label models that are currently set on the input graph. Individual models for edge labels can be changed in the edge or edge label property dialog.
Center Slider
Allows labels to be placed somewhere on the corresponding edge path.
Side Slider
Allows labels to be placed along both sides of the edge path.
Centered
Allows labels to be placed on top of the center of the longest edge segment
3 Pos
Allows labels to be placed on top of the edge either at source or at target or at center position of the edge path.
2 Pos
Allows labels to be placed on top of the edge either at source or at target position of the edge path.