hyparquet/test/files/geospatial.metadata.json

{
  "version": 2,
  "schema": [
    {
      "repetition_type": "REQUIRED",
      "name": "schema",
      "num_children": 3
    },
    {
      "type": "BYTE_ARRAY",
      "repetition_type": "OPTIONAL",
      "name": "group",
      "converted_type": "UTF8",
      "logical_type": {
        "type": "STRING"
      }
    },
    {
      "type": "BYTE_ARRAY",
      "repetition_type": "OPTIONAL",
      "name": "wkt",
      "converted_type": "UTF8",
      "logical_type": {
        "type": "STRING"
      }
    },
    {
      "type": "BYTE_ARRAY",
      "repetition_type": "OPTIONAL",
      "name": "geometry",
      "logical_type": {
        "type": "GEOMETRY"
      }
    }
  ],
  "num_rows": 28,
  "row_groups": [
    {
      "columns": [
        {
          "file_offset": 0,
          "meta_data": {
            "type": "BYTE_ARRAY",
            "encodings": [
              "PLAIN",
              "RLE",
              "RLE_DICTIONARY"
            ],
            "path_in_schema": [
              "group"
            ],
            "codec": "UNCOMPRESSED",
            "num_values": 28,
            "total_uncompressed_size": 61,
            "total_compressed_size": 61,
            "data_page_offset": 25,
            "dictionary_page_offset": 4,
            "statistics": {
              "null_count": 0,
              "max_value": "all",
              "min_value": "all"
            },
            "encoding_stats": [
              {
                "page_type": "DICTIONARY_PAGE",
                "encoding": "PLAIN",
                "count": 1
              },
              {
                "page_type": "DATA_PAGE",
                "encoding": "RLE_DICTIONARY",
                "count": 1
              }
            ],
            "size_statistics": {
              "unencoded_byte_array_data_bytes": 84,
              "repetition_level_histogram": [],
              "definition_level_histogram": [
                0,
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              ]
            }
          }
        },
        {
          "file_offset": 0,
          "meta_data": {
            "type": "BYTE_ARRAY",
            "encodings": [
              "PLAIN",
              "RLE",
              "RLE_DICTIONARY"
            ],
            "path_in_schema": [
              "wkt"
            ],
            "codec": "UNCOMPRESSED",
            "num_values": 28,
            "total_uncompressed_size": 2841,
            "total_compressed_size": 2841,
            "data_page_offset": 2536,
            "dictionary_page_offset": 65,
            "statistics": {
              "null_count": 0,
              "max_value": "POLYGON ZM ((30 10 40 300, 40 40 80 1600, 20 40 60 800, 10 20 30 200, 30 10 40 300))",
              "min_value": "GEOMETRYCOLLECTION (POINT (30 10), LINESTRING (30 10, 10 30, 40 40), POLYGON ((30 10, 40 40, 20 40, 10 20, 30 10)), MULTIPOINT ((30 10)), MULTILINESTRING ((30 10, 10 30, 40 40)), MULTIPOLYGON (((30 10, 40 40, 20 40, 10 20, 30 10))))"
            },
            "encoding_stats": [
              {
                "page_type": "DICTIONARY_PAGE",
                "encoding": "PLAIN",
                "count": 1
              },
              {
                "page_type": "DATA_PAGE",
                "encoding": "RLE_DICTIONARY",
                "count": 1
              }
            ],
            "size_statistics": {
              "unencoded_byte_array_data_bytes": 2343,
              "repetition_level_histogram": [],
              "definition_level_histogram": [
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              ]
            }
          }
        },
        {
          "file_offset": 0,
          "meta_data": {
            "type": "BYTE_ARRAY",
            "encodings": [
              "PLAIN",
              "RLE",
              "RLE_DICTIONARY"
            ],
            "path_in_schema": [
              "geometry"
            ],
            "codec": "UNCOMPRESSED",
            "num_values": 28,
            "total_uncompressed_size": 4315,
            "total_compressed_size": 4315,
            "data_page_offset": 7174,
            "dictionary_page_offset": 2906,
            "encoding_stats": [
              {
                "page_type": "DICTIONARY_PAGE",
                "encoding": "PLAIN",
                "count": 1
              },
              {
                "page_type": "DATA_PAGE",
                "encoding": "RLE_DICTIONARY",
                "count": 1
              }
            ],
            "size_statistics": {
              "unencoded_byte_array_data_bytes": 4140,
              "repetition_level_histogram": [],
              "definition_level_histogram": [
                0,
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              ]
            },
            "geospatial_statistics": {
              "bbox": {
                "xmin": 10,
                "xmax": 40,
                "ymin": 10,
                "ymax": 40,
                "zmin": 30,
                "zmax": 80,
                "mmin": 200,
                "mmax": 1600
              },
              "geospatial_types": [
                1,
                2,
                3,
                4,
                5,
                6,
                7,
                1001,
                1002,
                1003,
                1004,
                1005,
                1006,
                1007,
                2001,
                2002,
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                2004,
                2005,
                2006,
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                3003,
                3004,
                3005,
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              ]
            }
          }
        }
      ],
      "total_byte_size": 7217,
      "num_rows": 28,
      "file_offset": 4,
      "total_compressed_size": 7217
    }
  ],
  "created_by": "parquet-cpp-arrow version 21.0.0",
  "metadata_length": 787
}