def toStr(self, prec=3, fmt='[%s]', sep=', '): # PYCHOK expected
'''Return the string representation of this cartesian.
@keyword prec: Optional number of decimals, unstripped (int).
@keyword fmt: Optional enclosing backets format (string).
@keyword sep: Optional separator to join (string).
@return: Cartesian represented as "[x, y, z]" (string).
'''
return Vector3d.toStr(self, prec=prec, fmt=fmt, sep=sep)
def toStr(self, prec=5, fmt='(%s)', sep=', '): # PYCHOK expected
'''Return a string representation of this n-vector.
Height component is only included if non-zero.
@keyword prec: Optional number of decimals, unstripped (C{int}).
@keyword fmt: Optional enclosing backets format (C{str}).
@keyword sep: Optional separator between components (C{str}).
@return: Comma-separated "x, y, z [, h]" (C{str}).
@example:
>>> Nvector(0.5, 0.5, 0.7071).toStr() # (0.5, 0.5, 0.7071)
>>> Nvector(0.5, 0.5, 0.7071, 1).toStr(-3) # (0.500, 0.500, 0.707, +1.00)
'''
t = Vector3d.toStr(self, prec=prec, fmt='%s', sep=sep)
if self.h:
t = '%s%s%s%+.2f' % (t, sep, self.H, self.h)
return fmt % (t, )
