|It has been proposed that this page or section be merged with Key:natural. (Discuss)|
|Feature : Natural|
|Used to describes natural physical land features, including ones that have been modified by humans.|
The natural=* tag is used to describe wide variety of different physical features, which are often classified by the professional community into different categories. This article provides a summary of the broadest description of what features could be considered to be 'natural' within the context of a more detail classification system.
This is used to describe natural and physical land features. These also include features that have been modified by humans. See the page titled Natural for an introduction on its usage.
Many of the above features are areas and can either be created as a closed way or as a multipolygon, other such as rivers and streams are linear features and mapped as wayss and then there are the node features (such as trees). Some features, such as woods, can be nodes of areas; others, including valleys, can be nodes or areas.
Where two area features meet (eg a where an area of grass area ends at a road) this can be done three ways: 1) the area uses new nodes close to the road. This is a commonly used and easy approach, but is not so accurate. 2) Another approach, which is more accurate, is to use a enclosed way and have it share a line of nodes with the road. 3) The best approach for large areas is to create a multipolygon from the ways that make up the edges of the feature, having split the ways that will make up the ways at an appropriate point.
Please avoid use of:
- natural=land: Use an appropriate other tag to describe the use to which the land has been put. See also: multipolygon and natural=coastline.
- natural=marsh: Use natural=wetland instead with wetland=marsh.