Grasshopper

algorithmic modeling for Rhino

Information

Heron

This is the first release of an add-on which enables the import of GIS data from various sources into the Rhino/Grasshopper environment, located, scaled and cropped based on an Earth Anchor Point and a clipping polygon.  Sources of GIS data include Shapefiles, USGS IMG/HGT Elevation files and ArcGIS REST Services over the web.

The add-on includes eight components in two categories:

GIS REST

  • ESRI REST Service Geocode. Get a Decimal Degree coordinate from an address or Point-of-Interest with the Geocode service provided by ESRI.  
  • Get REST Service Layers. Discover data layers  from various data sources on the web. If the layers are a vector type, they return data similar to a shapefile, with geometry and associated data fields.  To be used with the Get REST Vector or Get REST Raster component depending on the data type.
  • Get REST Raster. Grabs JPGs of imagery from the specified web source.  Once downloaded to a folder the image can be located and scaled to match the boundary in real world units (meters) with the use of the image frame.
  • Get REST Vector.  Queries the web source for geometry and associated data fields.  For instance demographic information from the US Census can be referenced.

GIS Tools

  • Decimal Degrees to XY.  Convert Decimal Degrees to XY coorindates based on the EarthAnchorPoint.
  • Import SHP.  Imports Shapefiles using OGR Libraries. Output is in the form of points (for now) which can then be connected to form polylines.  For Shapefiles with Multipolygons (ie building footprints with courtyards), the component reads mulitple branches of points per Feature.  To get the footprint, you will need to draw a polyline for each branch, shift the branches and use the Boundary Surface component.
  • Import Topo.  Imports IMG and (STRM) HGT files using GDAL Libraries.  Output is in the form of a mesh.
  • Set EarthAnchorPoint.  Runs a macro to set the Earth Anchor Point in Rhino.  This is important to minimize distortion translating from the curved surface of the Earth to Euclidean coordinates.

Special thanks go to the vibrant GH community, the masterful guidance of Andrew Heumann and endless patience of George Waters.

Website: http://www.food4rhino.com/project/heron
Members: 81
Latest Activity: on Friday

Discussion Forum

REST Raster issue 6 Replies

Hi! For some reason the "REST raster" component is not really working for me. It might be that it has some trouble saving or loading the image I want to visualize. I am uploading the code for you to…Continue

Started by owe. Last reply by Brian Washburn on Friday.

Errors 10 Replies

Hi! I am quite new to heron…Continue

Started by Mohammad Azhar. Last reply by AKT II P.art Feb 7.

DISCOVER REST DATA SOURCES 3 Replies

When I plug the US Census Vectors into Get REST Service Layers, I get the error "The Request was Aborted: Could Not Create SSL/TLS Secure Channel."  Any idea on how to fix this?  Thanks!…Continue

Started by junxue. Last reply by owe Jan 30.

Heron don't work with non-USA city 8 Replies

Hi, I have a problem, heron work correctly with USA, but if I change city to,for example, London or Moscow, I see only black square on rhino viewport.Continue

Started by Daniil Danilov. Last reply by javier serrano Nov 15, 2016.

Comment Wall

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Comment by Evgeny Shirinyan on February 16, 2017 at 10:46am

Hi Brian,

The first image is a comparison of the polygons from Heron (in red) and the meshes from InfraWorks (in yellow - selected)

The second image compares the polygons from Heron (in white) and the exported polygons from QGIS (selected hatches in yellow)

The CRS I have used is EPSG:32637 (the area of interest is located in Moscow). Here is the shape file with reprojected data https://www.dropbox.com/s/kwszn5yf958f4ep/buildings_2017-01-10_3263...

It would be great not to have this slight rotation. I see it originates from specific use of 3857 within the plugin. Thank you!

Comment by Brian Washburn on February 16, 2017 at 8:14am

Evgeny, 

What is the coordinate system of the original data before being reprojected?  Can you post a link to source?  What are the red lines the meshes are not matching to?  Apologies if I don't quite understand the issue.

Comment by Evgeny Shirinyan on February 14, 2017 at 2:08pm

Hi Brian!

I am back with my tiny wish list!

Here are two screenshots comparing InfraWorks export of reprojected data and QGIS one with the Heron result. A slight turn and a slight scale difference (~0.004) It would be great if Heron could switch off its 3857 reprojection and I will be able to send analysis results from Rhino to GIS!

I have checked ArcGIS Pro, InfraWorks and FME - all these tools produce meshes that are not suitable for analysis within Rhino. 

Comment by owe on February 8, 2017 at 1:26am

Anybody knows how to generate a shape file from Grasshopper?

THX

Comment by Vittorio Paris on December 30, 2016 at 1:57am

Thank!!!!

Comment by Brian Washburn on December 29, 2016 at 1:42pm

Vittorio, Try replacing the REST Geocode component currently on the canvas with a new one from the Heron tab.

Comment by Vittorio Paris on December 29, 2016 at 3:15am

Hi!

I am beginner,  I have a problem when i use heron compare this:

Comment by Thiago Jardim on September 4, 2016 at 7:50pm

I am sorry to say it... the app seems to be great but, following on my earlier comments, Meerkat imports the shapefile just fine. Geometry and attribute's data trees come with same number of branches, thus no referencing errors and scaling issues occurred.

Comment by Thiago Jardim on September 4, 2016 at 6:37pm

from the comment below, I noticed, my pointfeatures has more branches than the value output. There maybe a problem importing the shape file or a problem with the database but, it extrudes fine in ArcScene, with no errors.

Comment by Thiago Jardim on September 4, 2016 at 5:52pm

Hello, While importing a SHP file, the pointfeatures branch path doesn't match the atributes branch path.  After doing polylines with the points and extruding it using a height attribute from the values output, a buildings height is being applied to other building. What can be done to fix this?  

 

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