Expanding the d3.js tree layout should be done as nodes open, rather than being compressed

I have customized the tree layout to be oriented from top to bottom, based on a code similar to

When expanding nodes in the tree, I notice that other open nodes compress to adjust within the SVG element. Is there a way to prevent this behavior by potentially modifying the x component of each node? I attempted to make adjustments but the nodes still remain compressed together.

In addition, I am curious about changing the linking lines in the tree layout from bezier curves to right angles or straight lines. It seems like this might require a separate inquiry altogether.

Answer №1

Automatic compression is a key feature of the tree layout, making it impossible to disable. To work around this, simply adjust the size of your SVG to accommodate the expanded tree without compression. Be aware that if your screen is not large enough, scroll bars will be necessary even if everything fits on the screen.

The links between nodes are created using the diagonal line generator in this example. While you can substitute with a different line generator like d3.svg.line, adjustments will be required as the diagonal generator accesses source and target nodes differently. With a standard line generator, you must convert the structure to a two-element array and specify how to access x/y coordinates for each element. Then choose an interpolation method to achieve the desired curve.

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