def convertMetas(lfn):
"""set some values for the metadata tags cercal_distance, class, cercus, and directional_tuning. Use these to set color. Sets cercal_distance to 10 (proximal). Uses the dircolors module to infer class and thus direction and color. This module assumes the data are stored in a file name of origin, using "." as the field separator."""
for fn in lfn:
print fn
doc = io.read(fn)
els = doc.getElements(["Cell", "Fiducial", "SpatialField"], depth=1)
for e in els:
e.setAttrib("meta_cercal_distance", 10)
aclass = e.attrib("meta_class")
if aclass == None:
try:
dc._getclass(e)
aclass = e.attrib("meta_class")
except:
print "failed to get class for %s" % fn
continue
cerc = e.attrib("meta_cercus").lower()[0]
try:
d = dc.DIRECTIONS[aclass]
except:
print "no directional tuning for %s" % (str(aclass),)
continue
if cerc == "r":
d = 360 - d
e.setAttrib("meta_directional_tuning", d)
d = d % 360
ang = d * pi / 180
c = dc._getAngleColor(ang)
pycol = dc.convertColor(c, "py")
if "Color" in e.attributes:
del (e.attributes["Color"])
e.setAttrib("color", pycol)
io.write(doc, fn)
def setMetasFromNames_(lfn):
"""construct metadata tags based on structured file names"""
for fn in lfn:
doc = io.read(fn)
atr = meta_from_name(fn)
for e in doc.getElements():
for a in atr:
e.setAttrib(a, atr[a])
for a in ["meta_cercal_length"]:
if a in e.attributes:
del (e.attributes[a])
ang = e.attrib("meta_directional_tuning") % 360
ang = ang * dc.pi / 180
c = dc._getAngleColor(ang)
pycol = dc.convertColor(c, "py")
e.setAttrib("color", pycol)
io.write(doc, fn)
