Method nodeLengthsToHeights

src/figtree/treeviewer/ReRootedTree.java:528–541

Set the node heights from the current node branch lengths. Actually sets distance from root so the heights then need to be reversed.

(ReRootedNode node, double height)

     * sets distance from root so the heights then need to be reversed.
     */
    private void nodeLengthsToHeights(ReRootedNode node, double height) {

        double newHeight = height;

        if (node.getLength() > 0.0) {
            newHeight += node.getLength();
        }

        node.setHeight(newHeight);

        for (Node child : node.getChildren()) {
            nodeLengthsToHeights((ReRootedNode)child, newHeight);
        }
    }

    /**
     * Calculate branch lengths from the current node heights.