Changes between Version 49 and Version 50 of Introduction
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- 2014-10-23T18:56:13+02:00 (10 years ago)
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Introduction
v49 v50 1 1 [[TranslatedPages]] 2 [[PageOutline(2-1000,Table of Contents)]] 3 2 4 = Introduction to JOSM = 3 [[PageOutline(2-1000,,inline)]]4 5 == Terminology == 5 '''Node:''' A "node"is a point.6 Node:: A node is a point. 6 7 7 '''Way:''' A "way" is a line connecting multiple nodes. "Way,"therefore, is a general term for series of joined nodes, not just for roads or ways in reality.8 Way:: A way is a line connecting multiple nodes. Way, therefore, is a general term for series of joined nodes, not just for roads or ways in reality. 8 9 9 '''Relation:''' A "relation"is an ordered sequence of ways and nodes, a logical container used to group elements.10 Relation:: A relation is an ordered sequence of ways and nodes, a logical container used to group elements. 10 11 11 '''Area:''' An "area"is a way whose ends are connected.12 Area:: An area is a way whose ends are connected. 12 13 13 '''Tag:'''Tags describe what each node or way represents. Tags are organized into "keys" and "values." Keys are basically larger categories, such as "Highway" or "Land Use," while values are specific features, such as "Primary Road" or "Residential Street," and "Residential" or "Retail" land use.14 Tag:: Tags describe what each node or way represents. Tags are organized into "keys" and "values." Keys are basically larger categories, such as "Highway" or "Land Use," while values are specific features, such as "Primary Road" or "Residential Street," and "Residential" or "Retail" land use. 14 15 15 16 Have a look at [Help/Concepts/Object Objects - The basic building blocks of OSM data and maps] for more information. 16 17 17 18 If a road or track or path is curved, the curve is approximated using a number of nodes within a way, and short lines connecting them. If a way has a direction, that is indicated partly by using tags. For example, "oneway=yes" is a road that goes only in one direction. (See [#ConventionsinCreatingCertainTypesofWays Conventions in "Creating certain types of ways"] at the bottom of this page for special considerations when creating a one-way road.) Other tags refer to being on the left and right of the direction of way along the way. 19 18 20 19 21 == Starting JOSM == … … 24 26 The next step is to download some data. If you have a GPX file (downloaded from your GPS receiver) for the area of interest, load it into JOSM using (File/Open). JOSM will display the area of the GPX file. 25 27 26 Next, add data for that area from openstreetmap.org. Open the download dialog by clicking on the green down arrow in the top tool bar or through the file menu. To select the area to download, first click on the "Slippy Map" tab at the top of the screen. A map of the world appears. To move around the map and select the specific area you want to download, there are several tools: Click with the right mouse button to drag the map, use the scroll wheel to zoom in and out, and click with the left mouse button to define an area. Then, click on the green down arrow [[Image(source:trunk/images/download.png )]] to fetch the data from openstreetmap.org.28 Next, add data for that area from openstreetmap.org. Open the download dialog by clicking on the green down arrow in the top tool bar or through the file menu. To select the area to download, first click on the "Slippy Map" tab at the top of the screen. A map of the world appears. To move around the map and select the specific area you want to download, there are several tools: Click with the right mouse button to drag the map, use the scroll wheel to zoom in and out, and click with the left mouse button to define an area. Then, click on the green down arrow [[Image(source:trunk/images/download.png,middle)]] to fetch the data from openstreetmap.org. 27 29 28 30 An alternative is to download existing GPX points from the OSM server. In order to start this process you will need to know the latitude and longitude coordinates of the relevant area. The easiest way to do this is to use the download dialogues slippy map in the first tab. [wiki:Help/Action/Download Read more on the download dialogue]. 31 29 32 30 33 == Editing in JOSM == … … 32 35 33 36 === Adding a Node or a Way === 34 35 37 The first step of actual editing is to add a node or way to the OSM data. You can add standalone nodes or you can add nodes to ways, especially where there is a junction between two ways or a significant change in direction of the way. 36 38 … … 40 42 41 43 === Adding Tags === 42 43 44 Ways or nodes on their own are not of much use unless they are ''tagged'' to say what they represent. The Map Features web page [osmwiki:Map_Features Map Features] shows and explains all the current tags that could be used on a point or way. 44 45 … … 52 53 53 54 55 == Uploading to OSM == 56 If you are happy with all that you have done then you must upload your work to the OSM server. Click on the green up arrow [[Image(source:trunk/images/upload.png,middle)]]. 54 57 55 == Uploading to OSM == 56 If you are happy with all that you have done then you must upload your work to the OSM server. Click on the green up arrow [[Image(source:trunk/images/upload.png)]]. 57 58 JOSM will give you an overview of the elements that it is about to upload. You will be asked to provide a short text summary of your edits. This description will be saved with your data on the server and provides information, for example, for the [http://openstreetmap.org/browse Recent Changes list]. 58 JOSM will give you an overview of the elements that it is about to upload. You will be asked to provide a short text summary of your edits. This description will be saved with your data on the server and provides information, for example, for the [osmwww:browse Recent Changes list]. 59 59 60 60 Click on "Upload changes" and your data will be uploaded, saved and visible to everyone else. … … 63 63 64 64 65 66 65 == Conventions in Creating Certain Types of Ways == 67 68 66 A couple of other points about creating ways. 69 67
