code: def load(path):
      
      f = h5py.File(path,'r')
      if 'Fixmat' in f:
        fm_group = f['Fixmat']
      else:
        fm_group = f['Datamat']
      fields = {}
      params = {}
      for field, value in list(fm_group.items()):
          fields[field] = np.array(value)
      for param, value in list(fm_group.attrs.items()):
          params[param] = value
      f.close()
      return VectorFixmatFactory(fields, params)
docs: Load fixmat at path.
      
      Parameters:
          path : string
              Absolute path of the file to load from.