var meta_set = {"collection_date": [1990, 1960, 2010, 1980, 1970], "country": ["countryB", "countryC", "countryA", "countryD", "countryE"], "host": ["unknown", "Host3", "Host2", "Host1", "Host0"]};var meta_display_set = {"meta_display_order": ["collection_date", "country", "host"], "color_options": {"collection_date": {"menuItem": "collection_date", "type": "continuous"}, "country": {"menuItem": "country", "type": "discrete"}, "host": {"menuItem": "host", "type": "discrete"}}};