{ "meta_name":"atom_positions", "meta_type":"type-value", "meta_description":[ "Positions of all the atoms, in Cartesian coordinates. This metadata defines a ", "configuration and is therefore required. For alloys where concentrations of ", "species are given for each site in the unit cell, it stores the position of the ", "sites."], "meta_parent_section":"section_system", "meta_abstract_types":[ "configuration_core"], "meta_data_type":"float", "meta_dimension":[{ "meta_dimension_symbolic":"number_of_atoms" },{ "meta_dimension_fixed":3 }], "meta_units":"m" }