Railway Noise Areas in Helsinki - September 2017
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This table 'avoindatamelualueet_2017_09_rautatiet_hki_laeq7_22_paiva_npm__melualueet_2017_09_rautatiet_hki_laeq722_paiva_npmpolygon' contains data on noise areas related to railways in Helsinki. It is sourced from the website of 'Urban Environment Division of the City of Helsinki', which originates from Finland (ISO country code 'FI'). This table provides various columns including '_extract_date', '_row_number', 'id', '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 data analytics purposes such as analyzing noise levels, examining spatial patterns, and identifying areas affected by railway noise in Helsinki.
Field Descriptions
| Name |
Data type |
Description |
| _extract_date | date | The date when the row was extracted |
|---|
| _row_number | long | The row number |
|---|
| id | int | The unique identifier of the data |
|---|
| db_lo | float | The lower value of the database range |
|---|
| db_hi | float | The higher value of the database range |
|---|
| datanomist | string | The data nomist |
|---|
| paivitetty | date | The date and time when the data was last updated |
|---|
| geom_geojson | string | The geometry in GeoJSON format |
|---|
| geom_geotext | string | The geometry in Geotext format |
|---|
| geom_type | string | The type of geometry |
|---|
| 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 geometry |
|---|
