Python ete3.Tree方法代碼示例

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def closest_dna_dist(treefile):
    """
    Using get closest leaf in ete which according to the description gets the closest descendent leaf but may or may not!
    Note that this may not be symmetric.
    :param treefile: The tree file to read
    :return: a dict of a node and its closest leaf
    """

    global verbose
    if verbose:
        sys.stderr.write("Getting closest distances\n")
    tree = Tree(treefile)
    dist = {}
    leaves = tree.get_leaves()
    # prepopulate the hash
    for l in leaves:
        dist[l.name] = {}
    for i in range(len(leaves)):
        closest, distance = leaves[i].get_closest_leaf()
        dist[leaves[i].name][closest.name] = distance
        if verbose:
            sys.stderr.write("{} -> {} : {}\n".format(leaves[i].name, closest.name, distance))
    if verbose:
        sys.stderr.write("\tDone\n")
    return dist 

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def parse_jplacer_tree(data):
    """
    Extract the tree from the jplacer data structure and make it into an ete3 object
    :param data: the jplacer data structure
    :return:
    """


    try:
        tree = Tree(data['tree'], quoted_node_names=True, format=1)
    except NewickError as n:
        tt = re.sub(r'(\:[\d\.]+){\d+}', r'\1', data['tree'])
        tt = re.sub(r'{\d+};$', ';', tt)
        tree = Tree(tt, quoted_node_names=True, format=1)

    return tree 

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def readTree(newick_tree):
    try:
        if newick_tree[0] == "[": return ete3.Tree(newick_tree[newick_tree.index("]")+1:])
        else: return ete3.Tree(newick_tree)
    except:
        return None 

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def allTopos(branches, _topos=None, _topo_IDs=None):
    if _topos is None or _topo_IDs is None:
        _topos = []
        _topo_IDs = set([])
    assert 4 <= len(branches) <= 8, "Please specify between 4 and 8 unique taxon names."
    #print("topos contains", len(_topos), "topologies.")
    #print("current tree is:", branches)
    for x in range(len(branches)-1):
        for y in range(x+1,len(branches)):
            #print("Joining branch", x, branches[x], "with branch", y, branches[y])
            new_branches = list(branches)
            new_branches[x] = [new_branches[x],new_branches.pop(y)]
            #print("New tree is:", new_branches)
            if len(new_branches) == 3:
                #print("Tree has three branches, so appending to topos.")
                #now check that the topo doesn't match a topology already in trees, and if not add it
                t = ete3.Tree(listToNwk(new_branches))
                ID = t.get_topology_id()
                if ID not in _topo_IDs:
                    _topos.append(t)
                    _topo_IDs.add(ID)
            else:
                #print("Tree still unresolved, so re-calling function.")
                _topos = allTopos(new_branches, _topos, _topo_IDs)
    #print(_topo_IDs)
    return(_topos) 

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def get_tree(hal):
    """
    Extracts a Tree object from a HAL
    :param hal: HAL file.
    :return: Tree object
    """
    cmd = ['halStats', '--tree', hal]
    newick = call_proc_lines(cmd)[0]
    return ete3.Tree(newick, format=1) 

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def migrate(db_path):
    if db_path is None:
        raise ConfigError("No database path is given.")

    # make sure someone is not being funny
    utils.is_profile_db(db_path)

    # make sure the version is accurate
    profile_db = db.DB(db_path, None, ignore_version = True)
    if str(profile_db.get_version()) != current_version:
        raise ConfigError("Version of this profile database is not %s (hence, this script cannot really do anything)." % current_version)

    # migrate item orders
    item_orders = profile_db.get_table_as_dict(item_orders_table_name)
    for order_name in item_orders:
        if item_orders[order_name]['type'] == 'newick':
            newick = Tree(item_orders[order_name]['data'], format=1)
            newick = newick.write(format=2)
            profile_db._exec("""UPDATE %s SET "data" = ? WHERE "name" LIKE ?""" % item_orders_table_name, (newick, order_name))

    # migrate layer orders
    layer_orders = profile_db.get_table_as_dict(layer_orders_table_name)
    for order_name in layer_orders:
        if layer_orders[order_name]['data_type'] == 'newick':
            newick = Tree(layer_orders[order_name]['data_value'], format=1)
            newick = newick.write(format=2)
            profile_db._exec("""UPDATE %s SET "data_value" = ? WHERE "data_key" LIKE ?""" % layer_orders_table_name, (newick, order_name))

    # set the version
    profile_db.remove_meta_key_value_pair('version')
    profile_db.set_version(next_version)

    # bye
    profile_db.disconnect()
    progress.end()

    run.info_single('Your profile db is now %s. Aww, yisss.' % next_version, nl_after=1, nl_before=1, mc='green') 

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def migrate(db_path):
    if db_path is None:
        raise ConfigError("No database path is given.")

    # make sure someone is not being funny
    utils.is_pan_db(db_path)

    # make sure the version is accurate
    pan_db = db.DB(db_path, None, ignore_version = True)
    if str(pan_db.get_version()) != current_version:
        raise ConfigError("Version of this pan database is not %s (hence, this script cannot really do anything)." % current_version)

    # migrate item orders
    item_orders = pan_db.get_table_as_dict(item_orders_table_name)
    for order_name in item_orders:
        if item_orders[order_name]['type'] == 'newick':
            newick = Tree(item_orders[order_name]['data'], format=1)
            newick = newick.write(format=2)
            pan_db._exec("""UPDATE %s SET "data" = ? WHERE "name" LIKE ?""" % item_orders_table_name, (newick, order_name))

    # migrate layer orders
    layer_orders = pan_db.get_table_as_dict(layer_orders_table_name)
    for order_name in layer_orders:
        if layer_orders[order_name]['data_type'] == 'newick':
            newick = Tree(layer_orders[order_name]['data_value'], format=1)
            newick = newick.write(format=2)
            pan_db._exec("""UPDATE %s SET "data_value" = ? WHERE "data_key" LIKE ?""" % layer_orders_table_name, (newick, order_name))

    # set the version
    pan_db.remove_meta_key_value_pair('version')
    pan_db.set_version(next_version)

    # now bye for real!
    pan_db.disconnect()

    progress.end()

    run.info_single('Your pan db is now %s.' % next_version, nl_after=1, nl_before=1, mc='green') 

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def is_proper_newick(newick_data, dont_raise=False, names_with_only_digits_ok=False):
    try:
        tree = Tree(newick_data, format=1)

        seen = set([])
        duplicates = set([])
        for leaf in tree.get_leaves():
            name = leaf.name
            if name in seen:
                duplicates.add(name)
            seen.add(name)

        if len(duplicates):
            raise Exception("Your newick tree contains duplicate leaves, here is a list of them: %s" % ", ".join(duplicates))

    except Exception as e:
        if dont_raise:
            return False
        else:
            raise FilesNPathsError("Your tree doesn't seem to be properly formatted. Here is what ETE had "
                                   "to say about this: '%s'. Pity :/" % e)

    names_with_only_digits = [n.name for n in tree.get_leaves() if n.name.isdigit()]
    if len(names_with_only_digits) and not names_with_only_digits_ok:
        raise FilesNPathsError("Your tree contains names that are composed of only digits (like this one: '%s'). Sadly, anvi'o "
                               "is not happy with such names in newick trees or clustering dendrograms :( Anvi'o developers "
                               "apologize for the inconvenience." % (names_with_only_digits[0]))

    return True 

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def get_names_order_from_newick_tree(newick_tree, newick_format=1, reverse=False, names_with_only_digits_ok=False):
    filesnpaths.is_proper_newick(newick_tree, names_with_only_digits_ok=names_with_only_digits_ok)

    tree = Tree(newick_tree, format=newick_format)

    names = [n.name for n in tree.get_leaves()]

    return list(reversed(names)) if reverse else names 

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def save_tree(self):
        try:
            order_full_name = request.forms.get('name')
            order_data = request.forms.get('data')
            tree_type = request.forms.get('tree_type')
            additional = request.forms.get('additional')

            if tree_type == 'samples':
                order_name = order_full_name
                distance = 'NA'
                linkage = 'NA'

                if order_name in self.interactive.layers_order_data_dict:
                    raise ConfigError("Tree name '%s' already exists, overwriting currently not supported." % order_name)

                self.interactive.layers_order_data_dict[order_name] = {'newick': order_data, 'basic': ''}
                TableForLayerOrders(self.interactive.args).add({order_name: {'data_type': 'newick', 'data_value': order_data}})
            else:
                self.interactive.p_meta['item_orders'][order_full_name] = {'type': 'newick', 'data': order_data, 'additional': additional}

                order_name, distance, linkage = order_full_name.split(':')
                anvio_db_path = self.interactive.pan_db_path or self.interactive.profile_db_path

                dbops.add_items_order_to_db(anvio_db_path, order_name, order_data, order_data_type_newick=True, distance=distance, linkage=linkage, additional_data=additional, dont_overwrite=True)

            return json.dumps({'status': 0, 'message': 'New order "%s (D: %s; L: %s)" successfully saved to the database.' % (order_name, distance, linkage)})

        except ConfigError as e:
            message = str(e.clear_text()) if hasattr(e, 'clear_text') else str(e)
            return json.dumps({'status': 1, 'message': message}) 

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def load_tree(treefile):
    """
    Just read the tree file
    :param treefile:
    :return:
    """

    return Tree(treefile, quoted_node_names=True, format=1) 

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def make_dists(treefile, printone, verbose):
    """
    Create pairwise distances from a tree file
    :param treefile: the tree file to parse
    :param printone: if true we only print one copy of the pair (ie. A -> B). If false we print A->B and B->A
    :param verbose: make some additional output
    :return:
    """

    tree = Tree(treefile)

    leaves = tree.get_leaves()
    paths = {x:set() for x in leaves}

    # get the paths going up the tree
    # we get all the nodes up to the last one and store them in a set
    if verbose:
        sys.stderr.write("Precalculating distances\n")
    for n in leaves:
        if n.is_root():
            continue
        movingnode = n
        while not movingnode.is_root():
            paths[n].add(movingnode)
            movingnode = movingnode.up

    # now we want to get all pairs of nodes using itertools combinations. We need AB AC etc but don't need BA CA

    leaf_distances = {x.name:{} for x in leaves}

    if verbose:
        sys.stderr.write("Iterating over the leaves\n")
    for (leaf1, leaf2) in combinations(leaves, 2):
        # figure out the unique nodes in the path
        uniquenodes = paths[leaf1] ^ paths[leaf2]
        distance = sum(x.dist for x in uniquenodes)
        if printone:
            if leaf1.name < leaf2.name:
                print("{}\t{}\t{}".format(leaf1.name, leaf2.name, distance))
            else:
                print("{}\t{}\t{}".format(leaf2.name, leaf1.name, distance))
        else:
            print("{}\t{}\t{}".format(leaf1.name, leaf2.name, distance))
            print("{}\t{}\t{}".format(leaf2.name, leaf1.name, distance)) 

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def make_matrix(treefile):
    """
    Create a matrix from a tree file
    :param treefile:
    :return:
    """

    tree = Tree(treefile)

    leaves = tree.get_leaves()
    paths = {x:set() for x in leaves}

    # get the paths going up the tree
    # we get all the nodes up to the last one and store them in a set
    sys.stderr.write("Precalculating distances\n")
    for n in leaves:
        if n.is_root():
            continue
        movingnode = n
        while not movingnode.is_root():
            paths[n].add(movingnode)
            movingnode = movingnode.up

    # now we want to get all pairs of nodes using itertools combinations. We need AB AC etc but don't need BA CA

    leaf_distances = {x.name:{} for x in leaves}

    sys.stderr.write("Iterating over the leaves\n")
    for (leaf1, leaf2) in combinations(leaves, 2):
        # figure out the unique nodes in the path
        uniquenodes = paths[leaf1] ^ paths[leaf2]
        distance = sum(x.dist for x in uniquenodes)
        leaf_distances[leaf1.name][leaf2.name] = leaf_distances[leaf2.name][leaf1.name] = distance

    allleaves = sorted(leaf_distances.keys())
    sys.stdout.write("\t".join([""] + allleaves) + "\n")
    for n in allleaves:
        sys.stdout.write(n + "\t")
        for m in allleaves:
            if m == n:
                sys.stdout.write("0\t")
            else:
                sys.stdout.write("{}\t".format(leaf_distances[n][m]))
        sys.stdout.write("\n") 

# 需要導入模塊: import ete3 [as 別名]
# 或者: from ete3 import Tree [as 別名]
def phylogenetic_tree_to_cluster_format(tree, pairwise_estimates):
    """
    Convert a phylogenetic tree to a 'cluster' data structure as in
    ``fastcluster``. The first two columns indicate the nodes that are joined by
    the relevant node, the third indicates the distance (calculated from branch
    lengths in the case of a phylogenetic tree) and the fourth the number of
    leaves underneath the node. Note that the trees are rooted using
    midpoint-rooting.

    Example of the data structure (output from ``fastcluster``)::

        [[   3.            7.            4.26269776    2.        ]
         [   0.            5.           26.75703595    2.        ]
         [   2.            8.           56.16007598    2.        ]
         [   9.           12.           78.91813609    3.        ]
         [   1.           11.           87.91756528    3.        ]
         [   4.            6.           93.04790855    2.        ]
         [  14.           15.          114.71302639    5.        ]
         [  13.           16.          137.94616373    8.        ]
         [  10.           17.          157.29055403   10.        ]]

    :param tree: newick tree file
    :param pairwise_estimates: pairwise Ks estimates data frame (pandas)
        (only the index is used)
    :return: clustering data structure, pairwise distances dictionary
    """
    id_map = {
        pairwise_estimates.index[i]: i for i in range(len(pairwise_estimates))}
    t = Tree(tree)

    # midpoint rooting
    midpoint = t.get_midpoint_outgroup()
    if not midpoint:  # midpoint = None when their are only two leaves
        midpoint = list(t.get_leaves())[0]
    t.set_outgroup(midpoint)
    logging.debug('Tree after rooting:\n{}'.format(t.get_ascii()))

    # algorithm for getting cluster data structure
    n = len(id_map)
    out = []
    pairwise_distances = {}
    for node in t.traverse('postorder'):
        if node.is_leaf():
            node.name = id_map[node.name]
            id_map[node.name] = node.name  # add identity map for renamed nodes
            # to id_map for line below
            pairwise_distances[node.name] = {
                id_map[x.name]: node.get_distance(x) for x in t.get_leaves()
            }
        else:
            node.name = n
            n += 1
            children = node.get_children()
            out.append(
                [children[0].name, children[1].name,
                 children[0].get_distance(children[1]),
                 len(node.get_leaves())])
    return np.array(out), pairwise_distances