Land Use Polygon History from Helsingin kaupunkiympariston toimiala in Finland
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This table contains the version history of the 'seutukarttamaankaytto__maankayttopolygon' table. The data in this table is sourced from the website of 'Helsinki City Environment Services' and originates from Finland (ISO country code: FI). The '_start_date' column represents the date when a row was extracted from the data source, while the '_end_date' column represents the date when a new version of the row was extracted. If the value in the '_end_date' column is null, it indicates that the corresponding row is the most recent version. The table contains various columns that store information related to land use polygons, their groups, geometry, and centroids. This historical data can be used for data analytics to analyze changes in land use patterns, track the evolution of different land use groups over time, and understand the spatial distribution of land use within the Helsinki area.
Field Descriptions
| Name |
Data type |
Description |
| _start_date | date | The start date of the validity period for the row version. |
|---|
| _end_date | date | The end date of the validity period for the row version. |
|---|
| _row_number | long | The number of the row version. |
|---|
| maankay | string | Unknown description for column 'maankay'. |
|---|
| mtryhm | int | Unknown description for column 'mtryhm'. |
|---|
| geom_geojson | string | The geometry of the row version in GeoJSON format. |
|---|
| geom_geotext | string | The geometry of the row version in Geotext format. |
|---|
| geom_type | string | The type of geometry for the row version. |
|---|
| geom_centroid | string | The centroid of the geometry for the row version. |
|---|
| geom_center_x | double | The x-coordinate of the center of the geometry for the row version. |
|---|
| geom_center_y | double | The y-coordinate of the center of the geometry for the row version. |
|---|
| geom | binary | Unknown description for column 'geom'. |
|---|
