python.channel_mapping Namespace Reference

Functions
def	convert_channel (name, want_id=True, channel_mapping=channel_mapping)
def	list_to_channelselection (list_, convert_channel=convert_channel, as_list=False)
def	make_channelselection (cs, mapping=None)
def	get_channel_ids_names (folder)

Variables
dictionary	channel_mapping = {}
list	channel_names = []
	cm_reversed = dict((value, key) for key, value in six.iteritems(channel_mapping))

Function Documentation

convert_channel()

def python.channel_mapping.convert_channel	(		name,
			want_id = True,
			channel_mapping = channel_mapping
	)

Given a channel, return a name detector or an integer (depending on want_id)

Definition at line 24 of file channel_mapping.py.

def convert_channel(name, want_id=True, channel_mapping=channel_mapping):
    """
    Given a channel, return a name detector or an integer (depending on want_id)
    """
    from builtins import int
    if isinstance(name, int):
        if name not in channel_mapping:
            raise RuntimeError("ChannelID %r is not in channel_mapping" % name)
        return name if want_id else channel_mapping[name]
        
    elif isinstance(name, str):
        if name not in channel_mapping:
            raise RuntimeError("ChannelID %r is not in channel_mapping" % name)
        return name if not want_id else channel_mapping[name]
        
    raise RuntimeError("I don't know how to convert %r into "
                         "a ChannelSelection" % name)
 

get_channel_ids_names()

def python.channel_mapping.get_channel_ids_names

(

folder

)

Given a `folder` name, retrieve a list of channel ids, names and return a
dictionary which will translate in either direction.

Definition at line 102 of file channel_mapping.py.

def get_channel_ids_names(folder):
    """
    Given a `folder` name, retrieve a list of channel ids, names and return a
    dictionary which will translate in either direction.
    """
    channel_ids = list(folder.listChannels())
    channel_names = folder.listChannelsWithNames()
    channel_names = list(map(channel_names.__getitem__, channel_ids))
    channel_dict = dict(list(zip(channel_ids,   channel_names))
                       +list(zip(channel_names, channel_ids)))
    return channel_ids, channel_names, channel_dict
 

list_to_channelselection()

def python.channel_mapping.list_to_channelselection	(		list_,
			convert_channel = convert_channel,
			as_list = False
	)

Given a list, return a channelselection.

Does the hard work of merging together adjacent channel numbers. Will also
convert channel names to numbers (if the folder is using DQ channels,
otherwise will give an incorrect result or fail to convert the strings to
channelids.)

Definition at line 42 of file channel_mapping.py.

def list_to_channelselection(list_, convert_channel=convert_channel, 
                             as_list=False):
    """
    Given a list, return a channelselection.
    
    Does the hard work of merging together adjacent channel numbers. Will also
    convert channel names to numbers (if the folder is using DQ channels,
    otherwise will give an incorrect result or fail to convert the strings to
    channelids.)
    """
    from PyCool import cool
    if not list_ and as_list: return []
    if not list_: return cool.ChannelSelection()
    if set(map(type, list_)) != set([int]) and convert_channel:
        list_ = map(convert_channel, list_)
    
    list_.sort()
    
    start = None
    ranges = []
    for this, next in zip(list_, list_[1:] + [-1]):
        if start is None:
            start = this
        if next - this != 1:
            ranges.append((start, this))
            start = None
    
    if as_list:
        return ranges
    
    assert len(ranges) < 50, (
        "Cool has a 50 channel selection limit (%s selected)" % ranges)
    
    selection = cool.ChannelSelection(*ranges.pop(0))
    for start, end in ranges:
        selection.addRange(start, end)
        
    return selection
    

make_channelselection()

def python.channel_mapping.make_channelselection	(		cs,
			mapping = None
	)

Helper function which can convert a channel id, name, or list of either into
a cool.ChannelSelection. Includes protections for invalid channels.

Definition at line 81 of file channel_mapping.py.

def make_channelselection(cs, mapping=None):
    """
    Helper function which can convert a channel id, name, or list of either into
    a cool.ChannelSelection. Includes protections for invalid channels.
    """
    from PyCool import cool
    if mapping is None:
        mapping = channel_mapping
    if cs is None or cs == []:
        return cool.ChannelSelection()
    elif isinstance(cs, (int, str)):
        channel_id = convert_channel(cs, channel_mapping=mapping)
        return cool.ChannelSelection(channel_id, channel_id)
    elif hasattr(cs, "__iter__"):
        cc = lambda cs: convert_channel(cs, channel_mapping=mapping)
        return list_to_channelselection(cs, convert_channel=cc)
    elif isinstance(cs, cool.ChannelSelection):
        return cs
    raise RuntimeError("I don't know how to convert %r into a "
                         "ChannelSelection" % cs)
 

Variable Documentation

channel_mapping

python.channel_mapping.channel_mapping = {}

Definition at line 14 of file channel_mapping.py.

channel_names

dictionary python.channel_mapping.channel_names = []

Definition at line 15 of file channel_mapping.py.

cm_reversed

python.channel_mapping.cm_reversed = dict((value, key) for key, value in six.iteritems(channel_mapping))

Definition at line 21 of file channel_mapping.py.