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= Context Menu > OSM Data Layer =

A Data layer contains map data objects downloaded from OpenStreetMap or created and edited by users, usually meant to upload them back to OSM. Special [#LayerState layer states] may block this.

=== Context menu ===#ContextMenu
OSM data layers have following context menu:

||= **Icon** =||= **Name** =||= **Shortcut** =||
||  [[JOSMImage(dialogs/activate,link=wikitr:/Help/Dialog/LayerList#ActivateLayer,middle)]]  ||\
|| [wikitr:/Help/Dialog/LayerList#ActivateLayer Activate] ||\
|| **`Shift+A`⤳`[0–9]`** ||\
||
||  [[JOSMImage(dialogs/showhide,link=wikitr:/Help/Dialog/LayerList#VisibilityLayer,middle)]]  ||\
|| [wikitr:/Help/Dialog/LayerList#VisibilityLayer Show/Hide] ||\
|| **`Shift+S`⤳`[0–9]`**||\
||
||  [[JOSMImage(dialogs/autoscale/layer,link=wikitr:/Help/Action/ZoomToLayer,middle)]]  ||\
|| [wikitr:/Help/Action/ZoomToLayer Zoom to layer] ||\
|| ||\
||
||  [[JOSMImage(dialogs/delete,24,link=wikitr:/Help/Dialog/LayerList#DeleteLayer,middle)]]  ||\
|| [wikitr:/Help/Dialog/LayerList#DeleteLayer Delete] || ||\
||
||||
||  [[JOSMImage(dialogs/mergedown,link=wikitr:/Help/Action/MergeLayer,middle)]]  ||\
|| [wikitr:/Help/Action/MergeLayer Merge] || ||\
||
||  [[JOSMImage(dialogs/duplicatelayer,link=wikitr:/Help/Action/DuplicateLayer,middle)]]  ||\
|| [wikitr:/Help/Action/DuplicateLayer Duplicate] || ||\
||
||  [[JOSMImage(save,link=wikitr:/Help/Action/Save,middle)]]  ||\
|| [wikitr:/Help/Action/Save Save] || ||\
||
||  [[JOSMImage(save_as,link=wikitr:/Help/Action/SaveAs,middle)]]  ||\
|| [wikitr:/Help/Action/SaveAs Save as ...] || ||\
||
||  [[JOSMImage(exportgpx,link=wikitr:/Help/Action/GpxExport,middle,24)]]  ||\
|| [wikitr:/Help/Action/GpxExport Export to GPX ...] ''(only in [wikitr:/Help/ExpertMode expert mode])'' || ||\
||
||  [[JOSMImage(converttogpx,link=wikitr:/Help/Action/ConvertToGpxLayer,middle,24)]]  ||\
|| [wikitr:/Help/Action/ConvertToGpxLayer Convert To GPX Layer] ''(only in expert mode)'' || ||\
||
||||
||  [[JOSMImage(dialogs/edit,link=wikitr:/Help/Action/RenameLayer,middle)]]  ||\
|| [wikitr:/Help/Action/RenameLayer Rename Layer] || ||\
||
||  [[JOSMImage(no_upload,link=wikitr:/Help/Action/EncourageDiscourageUpload,middle)]]  ||\
|| [wikitr:/Help/Action/EncourageDiscourageUpload Discourage upload] ''(only in expert mode)'' || ||\
||
||  || Data consistency test || ||\
||
||||
||  [[JOSMImage(info,link=wikitr:/Help/Action/LayerInfo,middle)]]  ||\
|| [wikitr:/Help/Action/LayerInfo Info] || ||\
||

=== Layer State ===#LayerState
By default all actions are possible with the OSM data in a layer.
But the three switches Upload, Download and Locked can change this:

||||= **Switch** =||= **Upload** =||= **Download** =||= **Locked** =||= **Behavior** =||\
||
||||= **key name** =||= `upload` =||= `download` =||= `locked` =||= =||\
||
|| [[JOSMImage(layer/osmdata_small)]] ||\
|| Default || || || ||\
|| No special behavior. ||\
||
|| [[Image(Help/Menu/OSMLayer:noupload.svg,link=,middle)]] ||\
|| Upload discouraged ||  `false`  || || ||\
|| A warning before the upload appears. ||\
||
|| [[Image(Help/Menu/OSMLayer:noupload.svg,link=,middle)]] ||\
|| Upload blocked ||  `never`  || || ||\
|| Uploading is not possible, the upload button is greyed out. ||\
||
|| [[Image(Help/Menu/OSMLayer:nodownload.svg,link=,middle)]] ||\
|| Download blocked || ||  `never`  || ||\
|| The downloaded data goes into another layer which doesn't block downloads if available. Otherwise a new layer is created. ||\
||
|| [[Image(Help/Menu/OSMLayer:nodownloadnoupload.svg,top,link=,middle)]] ||\
|| Upload and download blocked ||  `never`  ||  `never`  || ||\
|| The combination of the two states above. ||\
||
|| [[JOSMImage(lock)]] ||\
|| Locked || || ||  `true`  ||\
|| This includes `download=never` and `upload=never` and additionally blocks any editing of the data. ||\
||

The Upload switch can be toggled to `false` with [wikitr:/Help/Action/EncourageDiscourageUpload Discourage upload] in the context menu mentioned above. 
For all other states the switches must be edited in the .osm-file with a text editor.
The switches are optional parts of the osm key in the second line.

{{{#!xml
# Default:
<osm version='0.6' generator='JOSM'>

# Upload discouraged: 
<osm version='0.6' generator='JOSM' upload='false'>

# Upload blocked:
<osm version='0.6' generator='JOSM' upload='never'>

# Download blocked:
<osm version='0.6' generator='JOSM' download='never'>

# Upload and download blocked:
<osm version='0.6' generator='JOSM' upload='never' download='never'>

# Locked: 
<osm version='0.6' generator='JOSM' locked='true'>
}}}

----
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Back to [wikitr:/Help Main Help]

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