Helsinki Metropolitan Basic Map - Basic Polygons
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This table contains data from 'City of Helsinki Environment Sector' website. It represents the basic polygons of the Helsinki Metropolitan Area. The table contains various attributes such as '_extract_date' which represents the date of extraction, '_row_number' which represents the row number, 'kokotun' representing the total area, 'kunta' representing the municipality, 'suur' representing the region, 'perus' representing the basic, 'nimi' representing the name, 'nimi_iso' representing the ISO name, 'mtryhm' representing the measurement group, 'geom_geojson' representing the geometry in GeoJSON format, 'geom_geotext' representing the geometry in geotext format, 'geom_type' representing the type of geometry, 'geom_centroid' representing the centroid of the geometry, 'geom_center_x' representing the center x-coordinate of the geometry, 'geom_center_y' representing the center y-coordinate of the geometry, 'geom' representing the geometry, and 'tietopalve' representing the data service. This table provides valuable information that can be utilized for various data analytics tasks such as analyzing the distribution of basic polygons across different municipalities and regions, calculating the total area of polygons, exploring the geometry characteristics, and studying the relationship between basic polygons and other attributes like names and measurement groups. The data in this table originates from Finland (ISO country code 'fi').
Field Descriptions
| Name |
Data type |
Description |
| _extract_date | date | The date when the data was extracted. |
|---|
| _row_number | long | The unique identifier of each row. |
|---|
| kokotun | int | The name of the town. |
|---|
| kunta | int | The name of the municipality. |
|---|
| suur | int | The size of the object. |
|---|
| perus | int | The basic property of the object. |
|---|
| nimi | string | The name of the object. |
|---|
| nimi_iso | string | The ISO code of the object's name. |
|---|
| mtryhm | int | The group of the object. |
|---|
| geom_geojson | string | The geometry data of the object in GeoJSON format. |
|---|
| geom_geotext | string | The text representation of the geometry data. |
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| geom_type | string | The type of the geometry data. |
|---|
| geom_centroid | string | The centroid of the geometry data. |
|---|
| geom_center_x | double | The x-coordinate of the center of the geometry data. |
|---|
| geom_center_y | double | The y-coordinate of the center of the geometry data. |
|---|
| geom | binary | The full geometry data. |
|---|
| tietopalve | int | The service information of the data. |
|---|
