Elk

Information

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.

Members: 362
Latest Activity: Sep 20, 2023

Download:

http://www.food4rhino.com/project/elk

Demo Video:

v1 http://vimeo.com/31035360

v2 https://vimeo.com/142881244

Discussion Forum

Convert Lat/Lon to a Point 2 Replies

Several people have asked about converting latitude/longitude to a point within the OSM space that Elk creates and it's something I intended to add to Elk whenever I had time for a proper update, but…Continue

Started by Timothy Logan. Last reply by idspaceman Oct 5, 2021.

Topography Component Error: 1. Solution exception:Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

Hello, I'm just taking my first steps with Elk and I've immediately come up against an issue with the Topography component. After connecting the Latitude and Longitude domains from the Location…Continue

Started by Brennan Black Jul 13, 2020.

ELK2 — grasshopper on mac — seems to work except for file parsing error 2 Replies

ELK seems to work on grasshopperMac, except for the file parsing.a typical mac path "/Users/Name/filename.ext" file path > TOPO component throws this error: Method has no base.changing the path to…Continue

Started by _fb. Last reply by ist May 28, 2020.

System.Xml.XmlException:Invalid character in the given encoding

http://viewfinderpanoramas.org/dem3.htmlSource this link for HGT files, the file …Continue

Started by Manish May 20, 2020.

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Comment Wall

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Comment by Joanna Rzewuska on October 20, 2018 at 4:47pm: Hi I am having a crazy problem with download on the food 4 rhino? is there anywhere else I could download the plugin from?

Comment by Alireza Tabrizi on October 6, 2018 at 4:27am: hi guys... In building category there is YES subcategory that in my map there are lots of them are unknown boundries...But how can i recognize there functions cause i need to distinguish their functions...I s there anyway?

Comment by Kevin Daye on February 2, 2018 at 2:56pm: Hi Tim (and everyone else)!

Had a quick question, I'm using Elk 2.2.2 and was able to find a 1/9 arc second DEM file (in IMG format) on the USGS National Map of the area of my interest. However, When I try to import the file I always get a domain error no matter what my Lat/Long values are.

Can Elk use these files?

Comment by UsernameAndPassword on July 29, 2017 at 7:10am: I managed to merge the GeoTiff tiles with QGIS but the resulting file requires a non uniform scale factor of 2 for X and Y and 1 for Z in order to match the OSM file. In QGIS the merged GeoTiff matches the OSM without any modification and in fact the right GeoTiff domain is gathered by ELK but the output scale is wrong.

Comment by UsernameAndPassword on July 25, 2017 at 3:17am: The location for which I need topography happens to be between two different SRTM GeoTiff Tiles.
Is there a way I can generate a single surface at this point?

Comment by Timothy Logan on February 8, 2017 at 7:24am: I've seen several plugins that import shape files, but I don't know that I know of one that exports shape files.

Comment by owe on February 8, 2017 at 1:28am: Anybody knows how to generate a shape file from Grasshopper?

THX

Comment by Mathias Nielsen on February 23, 2016 at 2:01am: Hey Tim,

Thank you and I apologize for having you go through a Danish webpage!

The GeoTiff I downloaded from kortforsyningen.dk was also an ASC file which I then converted with the software QGIS. This allowed me to translate the geodetic system from EUREF89 to WGS84 - but maybe it is actually in this translation that something went wrong.

Appreciate your help!

- Mathias

Comment by Timothy Logan on February 22, 2016 at 8:20pm: Hey Mathias,

First off, not sure what's up with it not working. The second image you show using the GeoTiff from kortforsyningen.dk looks fine per what you're specifying and what the GeoTiff file is showing (info output). The only other place I've downloaded GeoTiff data is OpenTopography.org, and that worked with no issues from what I can remember.

I did manage to work my way through the kortforsyningen.dk website with the help of google translate and some guesswork, and downloaded what looks like the same tile in ASCII Grid (ASC) file format with data corresponding to the EUREF89 geodetic system. I used gdal_translate to successfully convert the ASC file to a GeoTiff, but it's still in EUREF89 which I'm not very familiar with. I'll need to do a little reading on translating between that and WGS84, or see if there's a different way of getting the data out in a way that Elk can understand it.

I'll report back if/when I'm able to get anywhere with it.

-Tim

Comment by Mathias Nielsen on February 21, 2016 at 7:03am: Hi Timothy,

Thank you for your great work on Elk!

I'm having some problems, that you might have the answers to.

I have tried to download a GeoTIFF file from another webpage than earthexplorer.usgs.gov (because I needed more detail of Aarhus, Denmark than they could offer) but I just can't make Elk come up with any result, other than using GeoTIFFs from earthexplorer.usgs.gov

Result with GeoTIFF from earthexplorer.usgs.gov

Result with GeoTIFF from kortforsyningen.dk

Do you maybe know what the issue might be?

Thank you!

- Mathias