[yt-users] Runtime Error: unitsystem cgs unrecognized

[Patrick Rieser]

Hey all!

When I try to call my own added field magB I get a runtime error saying 
that the cgs unitsystem is
unrecognized. When I insert pf["unitsystem"] == "cgs" directly before 
the call where the traceback
starts, it returns true.


Best wishes,
Patrick



I add the field with:

def _magB(field,data):
     return (na.sqrt(data["Bx"]**2 + data["By"]**2 + data["Bz"]**2))
add_field("magB", function=_magB, units=r"\rm{Gauss}")

and then call:

rad_profile.add_fields("magB")

Traceback:

   File "rad_profile_magb.py", line 100, in <module>
     rad_profile.add_fields("magB")
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/profiles.py", 
line 170, in add_fields
     self._unlazy_add_fields(fields, weight, accumulation)
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/profiles.py", 
line 151, in _unlazy_add_fields
     accumulation, self._args, check_cut = False)
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/profiles.py", 
line 55, in save_state
     tr = func(*args, **kwargs)
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/profiles.py", 
line 264, in _bin_field
     source_data = self._get_field(source, field, check_cut)
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/profiles.py", 
line 204, in _get_field
     data.append(source[field][pointI].ravel().astype('float64'))
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", 
line 328, in __getitem__
     self.get_data(key)
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", 
line 2593, in get_data
     if self._generate_field(field):
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", 
line 358, in _generate_field
     self[field] = self.pf.field_info[field](self)
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/field_info_container.py", 
line 378, in __call__
     dd = self._function(self, data)
   File "/home/patrick/Auswertung/yt-bit/Plot/common_fields.py", line 7, 
in _magB
     return (na.sqrt(data["Bx"]**2 + data["By"]**2 + data["Bz"]**2))
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", 
line 328, in __getitem__
     self.get_data(key)
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", 
line 2593, in get_data
     if self._generate_field(field):
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py", 
line 358, in _generate_field
     self[field] = self.pf.field_info[field](self)
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/data_objects/field_info_container.py", 
line 378, in __call__
     dd = self._function(self, data)
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/frontends/flash/fields.py", 
line 357, in _Bx
     factor = GetMagRescalingFactor(data.pf)
   File 
"/home/patrick/Programme/yt-x86_64/src/yt-hg/yt/frontends/flash/fields.py", 
line 353, in GetMagRescalingFactor
     "value %s is unrecognized" % pf['unitsystem'])
RuntimeError: Runtime parameter unitsystem withvalue cgs is unrecognized