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ELK

01

ELK -2.0

For: Win

For: Rhino

For: grasshopper

OrganizationTitle:  
2018年4月

简介:

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OpenStreetMap.org (OSM)

OpenStretMap.org is an open/crowd sourced website of mapping data. 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.

 

Location Component

The Location component is primarily for preprocessing all of the node or point data from the OSM export.  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.

 

OSMData Component

The OSMData component is what you use to start organizing and collecting the data from the OSM file.  It defaults to selecting Building elements, but can be changed to select from any of the other map features in the OSM spec.

 

USGS Topography

USGS is a science organization that provides access to a large range of scientific data pertaining to the earth.  Elk uses data that originates from the Shuttle Radar Topography Mission (SRTM) of 2000.  This was a shuttle mission where most of the earth was scanned for elevation and packaged in 1°x1° tiles.

 

Topography Component

The Topography component can be used to generate points, curves, and a surface from various digital elevation model (DEM) file formats.  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 higher resolution IMG files are available for the United States only and can be downloaded from the USGS National Map Viewer.  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.  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.

 

To install:

 

Category: Architecture

License: Free

 

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