Changes between Version 109 and Version 110 of Help/Concepts/Object


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Timestamp:
2020-03-23T18:28:25+01:00 (6 years ago)
Author:
skyper
Comment:

update link; bigger icons

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  • Help/Concepts/Object

    v109 v110  
    2323
    2424=== Nodes (also an OSM data primitive) === #Nodes
    25 [[JOSMImage(data/node,20,bottom,margin-right=15,nolink)]] 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.
     25[[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.
    2626
    2727Only nodes have [wikitr:/Help/Concepts/Coordinates Coordinates] in the OSM data model. Ways and relations simply refer to nodes.
    … …  
    3434
    3535=== Ways (also an OSM data primitive) === #Ways
    36 [[JOSMImage(data/way,20,middle,margin-right=15,margin-bottom=5,nolink)]] 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).
     36[[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).
    3737
    3838==== Direction ====
    3939Since nodes are ordered in OSM; every way in OSM has a direction. This gives us possibility to add tags (details about object) such as [osmwiki:Key:conveying conveying=*] - to specify direction of escalators and moving walkways or [osmwiki:Key:incline incline=*] which can be used toghter with roads and footways. There [osmwiki:Category:Way_Direction_Dependent more examples] and we can't cover them all.
    4040
    41 **Note**: Rendering of direction in [wikitr:/Help/MapView MapView] can be set in Display Preferences under [wikitr:/Help/Preferences/Display#OsmData OSM Data].
     41**Note**: Rendering of direction in [wikitr:/Help/MapView MapView] can be set in Display Preferences under [wikitr:/Help/Preferences/Display#OSMData OSM Data].
    4242
    4343==== Segment ====
    4444Is '''a fragment between two consequent points of the way''' ([https://en.wikipedia.org/wiki/Line_segment "line segment" from ordinary geometry]). This is not a part of OSM data model, but users often distinguish because of tools than operate on segment level (rather than on complete way); please, distinguish a segment(s) from complete "way"s.
    4545
    46 **Note**: Rendering of segments in [wikitr:/Help/MapView MapView] can be set in Display Preferences under [wikitr:/Help/Preferences/Display#OsmData OSM Data].
     46**Note**: Rendering of segments in [wikitr:/Help/MapView MapView] can be set in Display Preferences under [wikitr:/Help/Preferences/Display#OSMData OSM Data].
    4747
    4848==== Areas ==== #ClosedWays
    49 [[JOSMImage(data/closedway,20,middle,margin-right=15,margin-bottom=5,nolink)]] If a **way** is closed, i.e. if the last node is the same as  the first node, it is also called an **area**. Old term for this is ''Closed Ways'' (it is still present at wiki, used in software and by some mappers; other part uses "geometry" when talking just about shape of the objects, without tags).
     49[[JOSMImage(data/closedway,24,middle,margin-right=15,margin-bottom=5,link=)]] If a **way** is closed, i.e. if the last node is the same as  the first node, it is also called an **area**. Old term for this is ''Closed Ways'' (it is still present at wiki, used in software and by some mappers; other part uses "geometry" when talking just about shape of the objects, without tags).
    5050
    5151Sometimes 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]
    … …  
    5959
    6060==== Simple explanation ====
    61 [[JOSMImage(data/relation,20,middle,margin-right=15,margin-bottom=5,nolink)]]  A **relation**:
     61[[JOSMImage(data/relation,24,middle,margin-right=15,margin-bottom=5,link=)]]  A **relation**:
    6262* is a sequence of other objects (nodes, ways and relations)
    6363* as other objects (node, way) - every relation can have their own "tags"
    … …  
    113113Assigned to a way, this set of **tags** indicate, that the way represents a road in a residential area with name ''Main road'' (the German name be ''Hauptstraße'', the English name, which in this example equals to name, is ''Main road''). Speed is limited to 30km/h and heavy goods vehicles (hgv) are not allowed. Furthermore, it's a one way street.
    114114
    115 In the [[JOSMImage(dialogs/propertiesdialog,18,middle)]] [wikitr:/Help/Dialog/TagsMembership Tags/Membership window] you can assign tags to an object, remove tags from an object, or edit assigned tags.
     115In the [[JOSMImage(dialogs/propertiesdialog)]] [wikitr:/Help/Dialog/TagsMembership Tags/Membership panel] you can assign tags to an object, remove tags from an object, or edit assigned tags.
    116116
    117117== Technical properties ==
    … …  
    121121
    122122In JOSM, a new object doesn't have an ID (its ID is 0) until it is uploaded the first time to the OSM server.
    123 * Under **''[[JOSMImage(preference,20,middle)]] [Action/Preferences Preferences]''** (or **''`F12`''**) -> [[JOSMImage(preferences/display,20,middle)]] **''[wikitr:/Help/Preferences/Display Display Settings] -> Look and Feel''** it is possible to en- or disable the display of objects ids in the windows.
    124 * With **''File -> [[JOSMImage(downloadprimitive,20,bottom)]] [wikitr:/Help/Action/DownloadObject Download object ...]''** it is possible to download **objects** by Ids.
     123* Under **''[[JOSMImage(preference)]] [wikitr:/Help/Action/Preferences Preferences]''** (or **''`F12`''**) -> [[JOSMImage(preferences/display,24,link=,middle)]] **''[wikitr:/Help/Preferences/Display Display Settings] -> Look and Feel''** it is possible to en- or disable the display of objects ids in the windows.
     124* With **''File -> [[JOSMImage(downloadprimitive)]] [wikitr:/Help/Action/DownloadObject Download object ...]''** it is possible to download **objects** by Ids.
    125125
    126126**Note**: The display of object ids in the [wikitr:/Help/Dialog/SelectionList Selection List] can be set in Display Preferences under [wikitr:/Help/Preferences/Display#LookAndFeel Look and Feel].
    127127
     128
    128129=== Object versions and history ===#Objectversionsandhistory
    129 
    130130Version numbers (versions) were introduced to simplify wiki-style editing. Unfortunately, to track changes to ways/relations you need to use more complex tools than simple comparison by version number.
    131131
    … …  
    139139
    140140==== Information about latest version ====
    141 * **''View -> [[JOSMImage(info,18,bottom)]] [wikitr:/Help/Action/InfoAboutElements Advanced info]''** (or Keyboard shortcut:**''`Ctrl+I`''**) opens separated windows with informations about selected objects in text format.
    142 * **''View -> [[JOSMImage(info,18,bottom)]] [wikitr:/Help/Action/InfoAboutElementsWeb Advanced info (web)]''**  (or Keyboard shortcut:**''`Ctrl+Shift+I`''**) opens the **objects pages** of selected objects on the [osmwww: OSM website] in your web browser.
     141* **''View -> [[JOSMImage(info)]] [wikitr:/Help/Action/InfoAboutElements Advanced info]''** (or Keyboard shortcut:**''`Ctrl+I`''**) opens separated windows with informations about selected objects in text format.
     142* **''View -> [[JOSMImage(info)]] [wikitr:/Help/Action/InfoAboutElementsWeb Advanced info (web)]''**  (or Keyboard shortcut:**''`Ctrl+Shift+I`''**) opens the **objects pages** of selected objects on the [osmwww: OSM website] in your web browser.
    143143
    144144Alternatively, you can browse the objects directly by entering following address in your web browser:
    … …  
    149149
    150150==== History of the object ====#ObjectHistory
    151 
    152151Each object has a **version**. The **version** is incremented whenever the object is uploaded to the server and the OSM server not only stores the most recent version of an object, but its complete **history**.
    153152
    154 * **''View -> [[JOSMImage(dialogs/history,18,bottom)]] [wikitr:/Help/Action/ObjectHistory History]''** (or Keyboard shortcut:**''`Ctrl+H`''**) opens the History Browser. The History Browser will show you the **versions** of a particular object.
    155 * Alternatively, **''View -> [[JOSMImage(dialogs/history,18,bottom)]] [wikitr:/Help/Action/ObjectHistoryWeb History (web)]''** (or Keyboard shortcut:**''`Ctrl+Shift+H`''**) opens a page on the [osmwww: OSM website] in your web browser which displays the object history, too.
     153* **''View -> [[JOSMImage(dialogs/history)]] [wikitr:/Help/Action/ObjectHistory History]''** (or Keyboard shortcut:**''`Ctrl+H`''**) opens the History Browser. The History Browser will show you the **versions** of a particular object.
     154* Alternatively, **''View -> [[JOSMImage(dialogs/history)]] [wikitr:/Help/Action/ObjectHistoryWeb History (web)]''** (or Keyboard shortcut:**''`Ctrl+Shift+H`''**) opens a page on the [osmwww: OSM website] in your web browser which displays the object history, too.
    156155
    157156----