| 6 | | * OSM Data Layer [wiki:/Help/Menu/OSMLayer (menu)]: holds the OpenStreetMap data (nodes, segments, ways, ...). |
| 7 | | * GPX Layer [wiki:/Help/Menu/GPXLayer (menu)]: holds the GPS data loaded from your local hard disk (by using the open dialog to load GPX files) or from openstreetmap. The context menu (right mouse click on layer in layer list) allows to set special properties for different gps layers (different colors, line style, etc.). |
| 8 | | * Marker Layer [wiki:/Help/Menu/Marker (menu)]: Markers are specially identified points on the track. They come in four varieties: simple named markers, audio markers, image markers and web markers. They are created as a side effect of opening a GPX file, containing waypoints from that file, or from a set of waypoints artificially constructed using the context menu entry Make Sampled Audio Layer on the GPX layer, which produces only audio markers. |
| 9 | | * Photo Layer [wiki:/Help/Menu/PhotoLayer (menu)]: the context menu (right mouse) of a GPS layer provides the menu to import images. Using this feature allows to match digital images with the gps coordinates to ease the naming of streets (for example). |
| 10 | | * WMS Layer [wiki:/Help/Menu/WMSLayer (menu)]: backgrounds retrieved from a WMS server. You will usually need the appropriate plugins installed to get these. Examples are Landsat satellite imagery, Yahoo satellite imagery, NPE out-of-copyright Ordnance Survey maps and OpenStreetMap map tiles. |
| | 7 | The Layers panel lists all loaded layers, controls their visibility and allows to activate one layer for editing map content. |
| 12 | | The Layer List Dialog also has several buttons beneath it which operate on the selected layer: |
| | 9 | == Layer types ==#Layertypes |
| | 10 | * [[JOSMImage(layer/osmdata_small,24,middle,link=)]] [wikitr:/Help/Menu/OSMLayer Data layer] - |
| | 11 | Holds [wikitr:/Help/Concepts/Object map objects] as data set. A [[JOSMImage(clock,middle,24,link=)]] clock indicates an running upload. \\ |
| | 12 | Editing, downloading and uploading data may be restricted by the [wikitr:/Help/Menu/OSMLayer#LayerState layer state]. \\ |
| | 13 | The indicators **Ø** ''(empty)'' and '''*''' ''(modified)'' are placed at the end of the line behind the name. |
| | 14 | * [[JOSMImage(layer/gpx_small,24,bottom,link=)]] [wikitr:/Help/Menu/GPXLayer GPX layer] - |
| | 15 | Holds GPS track data. |
| | 16 | Each GPX layer can have own properties like color, line style, etc. |
| | 17 | * [[JOSMImage(layer/marker_small,24,middle,link=)]] [wikitr:/Help/Menu/Marker Marker Layer] - |
| | 18 | Holds identified points on a GPX track, called ''Markers''. |
| | 19 | * [[JOSMImage(dialogs/geoimage,24,middle,link=)]] [wikitr:/Help/Menu/PhotoLayer Geoimage layer] - |
| | 20 | Holds images which were [wikitr:/Help/Action/Open opened], dragged on the [wikitr:/Help/MapView Mapview] or imported via a GPX layer. |
| | 21 | * [[JOSMImage(wikimedia_commons,link=,middle,24)]] Wikimedia Commons - [wikitr:/Help/Menu/PhotoLayer Geoimage layer] for images downloaded with [wikitr:/Help/Action/WikimediaCommonsLoader Load images from Wikimedia Commons]. |
| | 22 | * [[JOSMImage(imagery_menu)]] [wikitr:/Help/Menu/ImageryContextMenu Imagery Layer] - |
| | 23 | Holds a background retrieved from a tile server like Bing Aerial or other [wikitr:/Help/Menu/Imagery imagery]. |
| | 24 | * [[JOSMImage(dialogs/validator)]] [wikitr:/Help/Menu/Validator Validator layer] - |
| | 25 | Highlights errors or [wikitr:/Help/Dialog/Validator warnings] for objects on the active data layer. |
| | 26 | * [[JOSMImage(dialogs/notes/note_open)]] [wikitr:/Help/Menu/Notes Notes layer] - |
| | 27 | Holds [wikitr:/Help/Dialog/Notes Notes] from [osmwiki:Notes OSM]. |
| 18 | | == [wiki:/Help/Action/LayerShowHide Show/Hide] == |
| | 35 | ||= **Icon** =||= **Description** =|| |
| | 36 | || [[JOSMImage(dialogs/layerlist/active,24,link=,middle)]] ||\ |
| | 37 | || Activate this layer || |
| | 38 | || [[JOSMImage(dialogs/layerlist/scale,24,middle,link=)]] ||\ |
| | 39 | || Snap/unsnap the map zoom to the native resolution of this background imagery || |
| | 40 | || [[JOSMImage(dialogs/layerlist/offset,24,link=,middle)]] ||\ |
| | 41 | || Reset the imagery offset || |
| | 42 | || [[JOSMImage(dialogs/layerlist/eye,24,link=,middle)]] ||\ |
| | 43 | || Hide/unhide the layer || |
| 22 | | == [wiki:/Help/Action/LayerMerge Merge] == |
| | 51 | ==== Move Up ==== #LayerUp |
| | 52 | [[JOSMImage(dialogs/up,24,bottom,margin-right=10,link=)]] **Up** moves the selected layers up one row in the layer stack. |
| | 53 | This is important when items in one layer obscure those in layers below. You can reorder layers also by drag and drop. |
| | 54 | |
| | 55 | ==== Move Down ==== #LayerDown |
| | 56 | [[JOSMImage(dialogs/down,24,bottom,margin-right=10,link=)]] **Down** moves the marked layers down one row in the layer stack. |
| | 57 | |
| | 58 | ==== Activate Layer ==== #ActivateLayer |
| | 59 | [[JOSMImage(dialogs/activate,middle,margin-right=10,link=)]] **Activate** activates the marked layer. |
| | 60 | It is only possible to edit map data in an active Data layer. |
| | 61 | Each of the layers can be activated with an individual keyboard shortcut sequence: **`Shift+A` followed by `[1–0A-Z]`** - where `1` is the top layer; counting down to `9`, then `0` which activates 10, then `A-Z`. Press **`Shift+A`** only and wait a second. JOSM will display a list with all layers and their shortcuts in this format. |
| | 62 | |
| | 63 | ==== Visibility ==== #VisibilityLayer |
| | 64 | [[Image(gpx_colors.png,link=,right,margin-left=10)]] |
| | 65 | [[JOSMImage(dialogs/layerlist/visibility,middle,margin-right=10,link=)]] Once clicked on, it offers: |
| | 66 | * A checkbox to show/hide a layer, i.e. turns visibility of marked layers on or off. The layers are unchanged when hidden, but their contents are not shown. You can also use shortcuts to show/hide a layer, see keyboard shortcuts [#KeyboardShortcuts below]. |
| | 67 | * A slider to adjust the [[JOSMImage(dialogs/layerlist/transparency,16,bottom,link=)]] **Opacity** of marked layers. |
| | 68 | * A slider to adjust the [[JOSMImage(dialogs/layerlist/colorfulness,16,bottom,link=)]] **Colorfulness** of marked layers. |
| | 69 | * A slider to adjust the [[JOSMImage(dialogs/layerlist/gamma,16,bottom,link=)]] **Gamma** of marked layers. |
| | 70 | * A slider to adjust the [[JOSMImage(dialogs/layerlist/sharpness,16,bottom,link=)]] **Sharpness** of marked layers. |
| | 71 | Colorfulness, Gamma and Sharpness are only available for imagery layers. |
| | 72 | |
| | 73 | For gpx layers you can choose one of 7 default colors. (Other colors are available via [wikitr:/Help/Action/LayerCustomizeColor Customize Color] in the gpx layer [wikitr:/Help/Menu/GPXLayer context menu]). |
| | 74 | |
| | 75 | Note: For ease of use you can use mouse scrolling to move a slider while the pointer is placed at the slider – no need to click-drag-release the slider picker. |
| | 76 | |
| | 77 | ===== Keyboard Shortcuts ===== #KeyboardShortcuts |
| | 78 | Following hotkeys are used to control visibility of layers counted from top or bottom: |
| | 79 | * **`Shift+S`** followed by **`[1–0A-Z]`** - where `1` is the **''top**'' layer; counting down to `9`, then `0` which toggles 10, then `A-Z`, `S` has a special meaning as it repeats the last toggled layer. Press **`Shift+S`** only and wait a second. JOSM will display a list with all layers and their shortcuts in this format. |
| | 80 | * **`Alt+[1–0]`** - where `1` is the **''bottom''** layer; counting up to `9` and then `0` which toggles layer 10. (Use only the numbers above the letters on your keyboard, not the numbers in the numeric keypad.) The layer numbers in this format are displayed by default in the layer list. |
| | 81 | |
| | 82 | |
| | 83 | ==== Delete Layer ==== #DeleteLayer |
| | 84 | [[JOSMImage(dialogs/delete,24,middle,margin-right=10,link=)]] **Delete** permanently deletes the marked layers. **All unsaved changes will be discarded! ** |
| | 85 | If you try to delete an OSM data layer or Notes layer which contains changes, JOSM will open the [wikitr:/Help/Dialog/UnsavedChangesDialog Unsaved Changes dialog], asking to upload and/or save these changes. |
| | 86 | |
| | 87 | ==== Individual Buttons ==== |
| | 88 | There might be more buttons depending on the loaded [wikitr:/Plugins plugins], e.g. [[Image(source:osm/applications/editors/josm/plugins/rasterfilters/images/josm_filters_48.png,24,middle,link=)]] [osmwiki:JOSM/Plugins/RasterFilters RasterFilters plugin]. |
