def group( self ):
'''rearrange data tree for grouping
and set group level.
Through grouping the data tree is rearranged such
that the level at which data will be grouped will
be the top (0th) level in the nested dictionary.
'''
data_paths = DataTree.getPaths( self.data )
nlevels = len(data_paths)
# get number of levels required by renderer
try:
renderer_nlevels = self.renderer.nlevels
except AttributeError:
renderer_nlevels = 0
if self.groupby == "none":
self.group_level = nlevels - 1
elif self.groupby == "track":
# track is first level
self.group_level = 1
# add pseudo levels, if there are not enough levels
# to group by track
if nlevels == renderer_nlevels:
d = odict()
for x in data_paths[0]: d[x] = odict( ((x, self.data[x]),))
self.data = d
elif self.groupby == "slice":
# rearrange tracks and slices in data tree
if nlevels <= 2 :
self.warn( "grouping by slice, but only %i levels in data tree - all are grouped" % nlevels)
self.group_level = 0
else:
self.data = DataTree.swop( self.data, 0, 1)
self.group_level = 1
elif self.groupby == "all":
# group everything together
self.group_level = 0
else:
# neither group by slice or track ("ungrouped")
self.group_level = 0
return self.data
def group(self):
"""rearrange data tree for grouping.
and set group level.
"""
data_paths = DataTree.getPaths(self.data)
nlevels = len(data_paths)
# get number of levels required by renderer
try:
renderer_nlevels = self.renderer.nlevels
except AttributeError:
renderer_nlevels = 0
if self.groupby == "none":
self.group_level = renderer_nlevels
elif self.groupby == "track":
# track is first level
self.group_level = 0
# add pseudo levels, if there are not enough levels
# to group by track
if nlevels == renderer_nlevels:
d = odict()
for x in data_paths[0]:
d[x] = odict(((x, self.data[x]),))
self.data = d
elif self.groupby == "slice":
# rearrange tracks and slices in data tree
if nlevels <= 2:
warn("grouping by slice, but only %i levels in data tree - all are grouped" % nlevels)
self.group_level = -1
else:
self.data = DataTree.swop(self.data, 0, 1)
self.group_level = 0
elif self.groupby == "all":
# group everthing together
self.group_level = -1
else:
# neither group by slice or track ("ungrouped")
self.group_level = -1
