Residential Areas Polygon Map
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This table contains residential area polygons extracted from the dataset provided by Helsingin kaupunkiympariston toimiala, the urban environment department of the city of Helsinki, Finland. It includes information such as the extraction date, row number, land use category, land use group, spatial data in both GeoJSON and Geotext formats, geometry type, centroid coordinates, and the original geometry of the residential area. The data in this table can be utilized in various data analytics scenarios, such as analyzing the distribution of residential areas across the city, calculating the size and shape of each residential area, identifying the most common land use categories within residential areas, and studying the spatial relationships between different residential areas.
Field Descriptions
| Name |
Data type |
Description |
| _extract_date | date | The date when the data was extracted. |
|---|
| _row_number | long | The number assigned to each row in the table. |
|---|
| maankay | string | The assigned ID number for a specific location. |
|---|
| mtryhm | int | The category or group that a location belongs to. |
|---|
| geom_geojson | string | The geometry of a location in GeoJSON format. |
|---|
| geom_geotext | string | The geometry of a location in text format. |
|---|
| geom_type | string | The type of geometry for a location. |
|---|
| geom_centroid | string | The centroid of the geometry for a location. |
|---|
| geom_center_x | double | The x-coordinate of the center point of the geometry for a location. |
|---|
| geom_center_y | double | The y-coordinate of the center point of the geometry for a location. |
|---|
| geom | binary | The full geometry object for a location. |
|---|
