force layout Can the node position be fixed, like d3-force, otherwise the node position will move every time the page is refreshed

[MissHua]

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[petercat-assistant]

在 antvis/G6 中，使用 force 布局时，节点位置的固定可以通过以下方式实现：

1. 保存节点位置：在布局完成后，将节点的位置保存下来（例如保存到本地存储或数据库中）。这样在页面刷新后，可以重新加载这些位置。

2. 设置节点的固定属性：在 force 布局中，可以通过设置节点的 fx 和 fy 属性来固定节点的位置。fx 和 fy 分别表示节点的 x 和 y 方向的固定位置。

3. 自定义布局：如果内置的 force 布局不能满足需求，可以考虑自定义布局算法，手动控制节点的位置。

如果你需要更具体的代码示例或有其他问题，请随时告诉我！

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[zhongyunWan]

In G6's force-directed layout, the positions of elements may vary across each rendering by default, as the force-directed layout algorithm dynamically adjusts node positions based on attraction and repulsion forces between nodes.
If you want to maintain fixed element positions during each rendering, you can achieve this through the following methods:

Set Initial Positions: Assign initial x and y coordinates to each node in your data. The layout algorithm will then use these initial positions as a foundation for calculations.

Disable Dynamic Adjustments in the Layout Algorithm: In the layout configuration, you can reduce positional changes by configuring parameters such as preventOverlap, nodeStrength, and edgeStrength.

Save Layout Results: After the initial layout completes, save the final node positions and reuse them directly in subsequent renderings instead of recalculating the layout.

By applying these methods, you can ensure node position stability while using the force-directed layout.