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How do you create an area in OpenStreetMap?
This is resolved by looking at the data of #8125153 and #8125154 respectively. Areas can be created explicitly with multipolygons or by adding area = yes, but several tags on closed way also imply that it is an area – or not. For example landuse = forest clearly means tree-covered area, not row of trees.
How to create and manage marker, line, rectangle, polygon?
The osm API does not have that kind of features. Its purpose is to edit the map data, not to draw markers, polygons, etc on the map. To do the later, see (amonst others) the leaflet or openlayers libraries. Some third-party websites such as umap or mapbbshare also do somthing very similar.
How is an area defined in a polygon?
An area (or filled polygon) can be defined as an enclosed filled area defined as a closed way with appropriate associated tags or using a multipolygon relation creating an area from one of more ways.
How to extract the polygon of an administrative boundary?
If your admin_level relations contain admin_level+x relations as subareas (a very good idea), you can download whole chunks of boundaries going from one to the parent or child. You may save your work to an osm.file. But if you reload that file later, do: to keep your data in sync, else you may get nasty conflicts to solve.
Is it possible to export data from OpenStreetMap?
OpenStreetMap data is licensed under the Open Data Commons Open Database License (ODbL). This area is too large to be exported as OpenStreetMap XML Data. Please zoom in or select a smaller area, or use one of the sources listed below for bulk data downloads.
Where can I find a Garmin map id?
I have started a wiki page where you can get an overview of Map ID’s that are in use by (OSM) Garmin maps. Please help to add your own maps of maps that you know, so it can help the map creators to find a map ID that is available (to prevent conflicts in the installation or on your GPS).
Different software processing OSM tags will have their own lists that may subtly differ, in large part due to different ways how these lists are used. iD – osmlab/id-area-keys/blob/main/areaKeys.json (keys list what is considered as an area, listed values are exceptions from such rules.