D3强制布局固定位置

Question

I'm using D3's forced layout graph to plot the data.

When I call the update function using setInterval with new data, the force layout graph nodes start from a random position. How can I fix this?

I read other answers such as using dx dy or alpha(0) , in case of alpha(0) it did not work but dx dy using was successful until the data is changed and then the new node is not in same position as it is supposed to be.

My Current working fiddle: https://jsfiddle.net/mootqvs1/5/

Answer 1

In D3.js version 3 you have a property fixed for the node to stay at the current position. In version 4 this property is replaced with d.fx and d.fy, if they are set the node will stay at that position.