6 landcover

Lukas Martinelli edytuje tę stronę 2016-12-08 11:02:37 +00:00

Spis treści

• Fields
• class
• subclass
• Mapping Diagram
• ETL Diagram
• SQL

Landcover is used to describe the physical material at the surface of the earth. At lower zoom levels this is from Natural Earth data for glaciers and ice shelves and at higher zoom levels the [landcover is implied by OSM tags. The most common use case for this layer is to style wood (class=wood) and grass (class=grass`) areas.

Fields

class

Use the class to assign natural colors for landcover.

Possible values:

• farmland
• ice
• wood
• grass
• wetland

subclass

Use subclass to do more precise styling. Original value of either the natural, landuse, ,leisure, or wetland tag.

Possible values:

• allotments
• farm
• farmland
• orchard
• plant_nursery
• vineyard
• grass
• grassland
• meadow
• forest
• village_green
• recreation_ground
• park
• wetland
• grassland
• bog
• swamp
• wet_meadow
• marsh
• reedbed
• saltern
• tidalflat
• saltmarsh
• mangrove

Mapping Diagram

ETL Diagram

SQL

SELECT geometry, class, subclass FROM layer_landcover(ST_SetSRID('BOX3D(-20037508.34 -20037508.34, 20037508.34 20037508.34)'::box3d, 3857 ), 14)