![]() ![]() There error should mention that “K” has collected no values.Ģ0. You should have an error in the GenericOSM component. At this point, you are missing one piece to make the definition visualize data. Connect the P output of the GenericOSM component to the V input of the Polyline component.ġ9. Then connect the O and the X output of the Location component to the O and the X input of the GenericOSM component.ġ8. Connect the Panel to the P input of the location component.ġ7. In the Panel you’ve created, enter the file path for your OSM file.ġ6. Place a GenericOSM, Location, and Panel component in the Grasshopper definition window.ġ5. Save the new Grasshopper file in the same location as the OSM and Rhino files using the naming protocol indicated.ġ4. Type “Grasshopper” into the command line.ġ2. ![]() Save it with the naming protocol indicated.ġ1. YOU MUST HAVE A MINIMUM OF A RHINO FILE, GRASSHOPPER FILE, AND OSM FILE IN YOUR WORKING FOLDER.ġ0. Please use the same naming protocol that I’ve used in the sample folder that I’ve uploaded. Create a working folder wherever you keep your lcabcn2014 data. You will get a file download called “map.osm”.ĩ. Once the size is set, click on the blue “Export” button on the left.Ĩ. Change the size of the area of interest box in the map navigation box to suit your needs.ħ. On the left, find and click on some blue text that says “Manually select a different area”.Ħ. Once at, use the map to find the area of interest for which you want to grab data.ĥ. Elk = animal with antlers and GIS plug-in for Grasshopperģ.Grasshopper = parametric design\analysis\awesome plug-in for Rhino.This is the website where you will acquire the base data file that you will use in Rhino + Grasshopper + Elk. Through your own data mapping exercises, you can already begin to appreciate the implications of the open data gathering process, both in data richness and in challenges.ġ. Keep in mind that OpenStreetMap is OPEN SOURCE. OpenStreetMaps → Rhino → Grasshopper → Elk This post will walk you through a simple workflow Please try to watch this at least until minute 3m when Tim speaks about topography. For this reason it is recommended that you copy the Elk folder with all of it's GHA and DLL files to this Libraries folder rather than the individual files.Go to Food4Rhino link to install. Elk's Topography component uses the Geospatial Data Abstraction Library to read the GeoTIFF and IMG files so it will contain a larger number of files that pervious versions.In Grasshopper, choose File > Special Folders > Components folder.Right-click the ZIP file > Properties > make sure there is no "blocked" button.Download the ZIP file containing all of the Elk and GDAL library files.HGT files are the least reliable files as they tend to contain holes in the data, but they are the most basic form of DEM and you can download them from here. GeoTIFF files are available for 1 and 3 arc second resolutions for most of the earth and can be downloaded from the USGS Earth Explorer. ![]() The higher resolution IMG files are available for the United States only and can be downloaded from the USGS National Map Viewer. It currently accepts IMG files at a resolution of 1/3 arc second, GeoTIFF files at a resolution of 1 or 3 arc seconds, and HGT files at a resolution of 1 or 3 arc seconds. The Topography component can be used to generate points, curves, and a surface from various digital elevation model (DEM) file formats. ![]() This was a shuttle mission where most of the earth was scanned for elevation and packaged in 1°x1° tiles. Elk uses data that originates from the Shuttle Radar Topography Mission (SRTM) of 2000. USGS is a science organization that provides access to a large range of scientific data pertaining to the earth. It defaults to selecting Building elements, but can be changed to select from any of the other map features in the OSM spec. The OSMData component is what you use to start organizing and collecting the data from the OSM file. It wants a file path to an OSM file as it's input and will output OSMPoints, a Point3d with an OSM defined ID, the text string of the full XML file, and the latitude and longitude domains. The Location component is primarily for preprocessing all of the node or point data from the OSM export. It allows you to export XML formatted data of a selected area and then Elk will organize and construct collections of point and tag data so that you can begin creating curves and other Rhino/Grasshopper geometry. is an open/crowd sourced website of mapping data. Elk is a set of tools to generate map and topographical surfaces using open source data from and USGS. ![]()
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