Railway Noise Areas in Helsinki, Finland - Data from the Helsinki City Environment Sector
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This table contains data from the 'Helsinki City Environment' website, specifically related to noise areas caused by railways in Helsinki, Finland. The table includes various columns such as the extraction date of the data, row number, ID, decibel low range (db_lo), decibel high range (db_hi), data source name (datanomist), update date (paivitetty), geometry in GeoJSON format (geom_geojson), geometry in GeoText format (geom_geotext), geometry type (geom_type), geographic centroid (geom_centroid), x-coordinate of the centroid (geom_center_x), y-coordinate of the centroid (geom_center_y), and the full geometry (geom). The data in this table can be utilized in various data analytics tasks such as studying noise pollution patterns, analyzing the impact of railways on noise levels, identifying high noise areas, and developing noise mitigation strategies.
Field Descriptions
| Name |
Data type |
Description |
| _extract_date | date | The date when the data was extracted. |
|---|
| _row_number | long | The row number of the record. |
|---|
| id | int | The unique identifier of the record. |
|---|
| db_lo | float | The lower bound of a range value. |
|---|
| db_hi | float | The upper bound of a range value. |
|---|
| datanomist | string | The name of the data analyst. |
|---|
| paivitetty | date | The date when the record was last updated. |
|---|
| geom_geojson | string | The geometry data in GeoJSON format. |
|---|
| geom_geotext | string | The geometry data in Geotext format. |
|---|
| geom_type | string | The type of geometry. |
|---|
| geom_centroid | string | The centroid point of the geometry. |
|---|
| geom_center_x | double | The X-coordinate of the center point of the geometry. |
|---|
| geom_center_y | double | The Y-coordinate of the center point of the geometry. |
|---|
| geom | binary | The full geometry data. |
|---|
