Road Traffic Noise Study 2007, Area 03: Road Traffic Noise Polygons
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This table contains data from the 'Helsinki City Environment Sector' website in Finland (ISO country code 'fi'). It provides information related to 'avoindatameluselvitys_2007_alue_03_tieliikenne_l_den__meluselvitys_2007_alue_03_tieliikenne_l_denpolygon' table. The table includes various fields such as '_extract_date', '_row_number', 'tietopalve', 'db_lo', 'db_hi', 'datanomist', 'paivitetty', 'geom_geojson', 'geom_geotext', 'geom_type', 'geom_centroid', 'geom_center_x', and 'geom_center_y'. The data in this table can be utilized for various data analytics purposes, such as analyzing noise levels in specific areas, identifying data ownership, and studying the geometrical aspects of road traffic density polygons.
Field Descriptions
| Name |
Data type |
Description |
| _extract_date | date | The timestamp when the data was extracted. |
|---|
| _row_number | long | The row number of the record within the table. |
|---|
| tietopalve | int | The name of the information service that provided the data. |
|---|
| db_lo | int | The lower boundary of a database range. |
|---|
| db_hi | int | The upper boundary of a database range. |
|---|
| datanomist | string | The name of the data custodian. |
|---|
| paivitetty | string | The timestamp when the record was last updated. |
|---|
| geom_geojson | string | The geometry of the record in GeoJSON format. |
|---|
| geom_geotext | string | The geometry of the record in Geotext format. |
|---|
| geom_type | string | The type of geometry of the record. |
|---|
| geom_centroid | string | The centroid of the geometry. |
|---|
| geom_center_x | double | The x-coordinate of the center of the geometry. |
|---|
| geom_center_y | double | The y-coordinate of the center of the geometry. |
|---|
| geom | binary | The full geometry object. |
|---|
