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UnitParseError Traceback (most recent call last)
<ipython-input-3-0fc19cdcfd4d> in <module>()
1 slc = yt.SlicePlot(ds, [1.0,1.0,1.0], ["density"])
----> 2 slc.set_axes_unit("code_length")
3 slc.show()
/Users/jzuhone/Source/yt-3.x/yt/visualization/plot_container.pyc in newfunc(*args, **kwargs)
54 rv = f(*args, **kwargs)
55 args[0]._plot_valid = False
---> 56 args[0]._setup_plots()
57 return rv
58 return newfunc
/Users/jzuhone/Source/yt-3.x/yt/visualization/plot_window.pyc in _setup_plots(self)
713 aspect = np.float64(self.pf.quan(1.0, unit_y)/self.pf.quan(1.0, unit_x))
714
--> 715 extentx = [(self.xlim[i] - xc).in_units(unit_x) for i in (0, 1)]
716 extenty = [(self.ylim[i] - yc).in_units(unit_y) for i in (0, 1)]
717
/Users/jzuhone/Source/yt-3.x/yt/units/yt_array.pyc in in_units(self, units)
374
375 """
--> 376 new_units = self._unit_repr_check_same(units)
377 conversion_factor = self.units.get_conversion_factor(new_units)
378
/Users/jzuhone/Source/yt-3.x/yt/units/yt_array.pyc in _unit_repr_check_same(self, units)
320 # let Unit() handle units arg if it's not already a Unit obj.
321 if not isinstance(units, Unit):
--> 322 units = Unit(units, registry = self.units.registry)
323
324 if not self.units.same_dimensions_as(units):
/Users/jzuhone/Source/yt-3.x/yt/units/unit_object.pyc in __new__(cls, unit_expr, cgs_value, dimensions, registry, **assumptions)
186 else:
187 # lookup the unit symbols
--> 188 cgs_value, dimensions = _get_unit_data_from_expr(unit_expr, registry.lut)
189
190 # Create obj with superclass construct.
/Users/jzuhone/Source/yt-3.x/yt/units/unit_object.pyc in _get_unit_data_from_expr(unit_expr, unit_symbol_lut)
439 # Now for the sympy possibilities
440 if isinstance(unit_expr, Symbol):
--> 441 return _lookup_unit_symbol(str(unit_expr), unit_symbol_lut)
442
443 if isinstance(unit_expr, Number):
/Users/jzuhone/Source/yt-3.x/yt/units/unit_object.pyc in _lookup_unit_symbol(symbol_str, unit_symbol_lut)
506 # no dice
507 raise UnitParseError("Could not find unit symbol '%s' in the provided " \
--> 508 "symbols." % symbol_str)
509
510 def validate_dimensions(dimensions):
UnitParseError: Could not find unit symbol 'code_length' in the provided symbols.