Changes between Version 117 and Version 118 of Help/Concepts/Object


Ignore:
Timestamp:
2026-10-23T13:11:36+02:00 (3 days ago)
Author:
stoecker
Comment:

Tags are no primitive

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  • Help/Concepts/Object

    v117 v118  
    1111== Nodes, ways, and relations == #NodesWaysRelations
    1212
    13 === Tags (also an OSM data primitive) === #Tags
     13=== Tags === #Tags
    1414
    15 Tags provide meaning to the objects. Without them, any other object would be useless and meaningless. Each of ''three other data primitives'' **can have multiple tags**.
     15Tags provide meaning to the objects. Without them, any other object would be useless and meaningless. Each of the ''three data primitives'' **can have multiple tags**.
    1616
    1717[=#presets Often tags used in combinations; **usually these combinations can be found] in [wikitr:/Presets presets]**. But it may be true that tags you need to use are not in presets and you need to know them first.
    … …  
    2323[#Tags1 We will cover tags in more detail below], but first will cover all other data primitives.
    2424
    25 === Nodes (also an OSM data primitive) === #Nodes
     25=== Nodes (an OSM data primitive) === #Nodes
    2626[[JOSMImage(data/node,24,bottom,margin-right=15,link=)]] A **node** is an individual point with a defined position. ''With respective tags'' it can be used to indicate shops, benches, individual trees or points of drinking water.
    2727
    … …  
    3434A practical meaning of this is demonstrated at the [wikitr:/Help/Action/Draw#Commonnodes Draw Nodes] page. The [wikitr:/Help/Action/MergeNodes Merge Nodes] tool can be used to create common nodes.
    3535
    36 === Ways (also an OSM data primitive) === #Ways
     36=== Ways (an OSM data primitive) === #Ways
    3737[[JOSMImage(data/way,24,middle,margin-right=15,margin-bottom=5,link=)]] A **way** is a sequence of nodes ([https://en.wikipedia.org/wiki/Polygonal_chain a "polygonal chain" from ordinary geometry]). OSM **way** used to represent linear objects, ''with respective tags'' it can used to describe: a river bank, tree row, kerbs in the streets (among other uses).
    3838
    … …  
    5252Sometimes single area is not enough to represent an object (for example, a lake with an island in it), then you have to use a [wikitr:/Help/Concepts/Object#typemultipolygon multi-polygon]
    5353
    54 === Relations (also an OSM data primitive) === #Relations
     54=== Relations (an OSM data primitive) === #Relations
    5555
    5656==== In most cases you don't need them ====