Method calculateNodeHeights

src/figtree/treeviewer/ReRootedTree.java:502–522

Set the node heights from the current branch lengths.

()

     * Set the node heights from the current branch lengths.
     */
    private void calculateNodeHeights() {

        if (!lengthsKnown) {
            throw new IllegalArgumentException("Can't calculate node heights because branch lengths not known");
        }

        nodeLengthsToHeights(rootNode, 0.0);

        double maxHeight = 0.0;
        for (Node externalNode : getExternalNodes()) {
            if (((ReRootedNode)externalNode).getHeight() > maxHeight) {
                maxHeight = ((ReRootedNode)externalNode).getHeight();
            }
        }

        for (Node node : getNodes()) {
            ((ReRootedNode)node).setHeight(maxHeight - ((ReRootedNode)node).getHeight());
        }

        heightsKnown = true;
    }

    /**
     * Set the node heights from the current node branch lengths. Actually