Elk

362 members

Description

Elk is a plugin used to generate topographies and street maps using data from OpenStreetMap.org and Shuttle Radar Topography Mission (SRTM) data from NASA/Jet Propulsion Laboratory.

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Opening and Displaying SRTM (hgt) data in Rhino

by Dylan Burns

Apr 20, 2016

My goal is to be able to open and view SRTM data in Rhino.

I am attempting (new user) to create a script file in Grasshopper using ELK to display SRTM (.hgt) data in Rhino

Attached is a screen shot of my attempt.

Any input would be appreciated.  Does anyone have a generic script file for opening SRTM data that they would be willing to share?

Is there a command / trick to view the data in rhino once the script file is complete?

Thank you

  • up

    Timothy Logan

    You need to define what the domain is for the latitude and longitude.

    If you want the entire tile, just set it to whatever domain is specified in the Info output.  I would recommend you turn the preview off of the topography component if you're doing a large set and then just look at the data you want.  even a 1 arc second file is going to have almost 13 million points in it and it takes forever to render.  Just looking at the surface should be pretty quick though.

    If you're wanting just a portion of the tile, just adjust the domain to only pull what you want, say "-71.8 To -71.4" and "44.2 To 44.6" or something like that.

    15

    Apr 22, 2016

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    • up

      pual li

      I met with same problems dealing with Elk Topography ! (failed with SRTM3, but successful with SRTM1 indeed)

       

      Jun 18, 2017