With buildings, the most common tags include the building name and the building type. The great thing about tags is that they are an open concept – you can use any tags that you like. Similarly, all buildings contain a collection of tags. To see the tags, select an object on the map, then click ‘advanced’ in the bottom left. I personally prefer the Potlatch2 editor, which you can find in the drop-down next to the ‘edit’ button at the top. If you want to see this for yourself, go into the editor on OpenStreetMap. The values are the data itself the keys describe the type of data. We have a list of keys and a list of values. For example, if we go into the OpenStreetMap editor and have a look at a local branch of Costa Coffee: The most common key is ‘name’, and we describe the name in the value field. It is with these keys and values that we describe the object. Each item in this list has a key and a value. These ‘point collections’ are essentially polylines.Įvery object, whether a point or a polyline, has a list of data associated with it. For buildings, these points define the line around the building’s edge. For roads, these points join together to form lines along the centre of the road. For larger objects, such as roads and buildings, collections of points are used. Points are useful for small objects, such as benches, letterboxes or trees. OpenStreetMap: Understanding the dataĪ crash course into OpenStreetMap data: All (well, nearly all) objects in the map are either saved as points or as lists of points. This article will show you how I created buildings by extracting the OSM data and converting them into 3D meshes. And even if you are, the output is a collection of points, which requires further work to turn it into actual buildings. It is possible to extract building data with Elk, but this isn’t intuitive if you aren’t already familiar with OpenStreetMap data. One of the most interesting ways of getting your cities to look like cities is getting the buildings right. This parses OpenStreetMap data into Grasshopper geometry, allowing you to visualise any city or area in the world in your Rhino viewport. These commands can make use of history recording.I have recently been constructing whole cities in Rhino using the Elk plugin. Type these shortcut symbols before a command name to enable/disable history recordingįor example: %ArcBlend Commands with history enabledĬommands with the following notation pay attention to history recording. Command prefixes for turning history on and off
History can be recorded without the output geometry being updated when inputs are edited. This setting does not quit after one command. This command can be run inside another command. If the text in the pane is bold, then recording is active, if it is not bold, recording is not active.Ĭhange the option using the History command.
Click the pane to toggle the global setting for the duration of one command. The status bar Record History pane reflects the current state of history recording.
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If full locking is needed, children can be selected and locked with Lock command. History locked objects are selectable to use as input and edit properties, but not change geometry. Editing the child object directly will break the history link to the parent object. Locks child objects created with History to discourage direct geometry editing of the child object.
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If the option is set to No, use the HistoryUpdate command to manually update the objects. This may be slow or may interfere with your workflow. Recording history uses computer resources and makes saved files larger.Īllows output to automatically update when input is edited. In general, it is best to leave the Record option set to No and use the Record History status bar pane to selectively record history. Your browser does not support the video tag.Ĭontrols the default Record History setting.
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