gHowl

Information

gHowl is a set of components which extend Grasshopper's ability to communicate and exchange information with other applications and physical devices.

Website: http://www.grasshopper3d.com/group/ghowl
Location: In Between
Members: 976
Latest Activity: Feb 5

Download the latest set of gHowl components:

gHowl_r50 and example files

Check out the gHowl videos page where you can see how people have been using gHowl.

Our users have connected Rhino and Grasshopper to various protocols, platforms, and softwares including:

Processing

Excel

Open Office

RSS

Arduino

Kinect

Reactivision

openFrameworks

Google Earth

Resolume

VVVV

Pure Data

max/msp

Maya

Kangaroo

TouchOSC

iPhone

Android

Components:

UDP:

UDP Components now have the ability to send and receive to a Multicast group. To send or receive to a Multicast group, make sure you use the IP Range of 224.0.0.0 - 239.255.255.255.

OSC functionality is provided by the Bespoke OSC Library by Paul Varcholik.

Network Source - Tests the connection of your machine to a network.

UDP Send - Allows the sending of UDP messages over the network. Also allows the sending of OSC messages to OSC enabled software and hardware devices. (Deleting this component in 0.7.0057 crashes GH / Rhino)

UDP Receive - Allows the sending and receiving of UDP messages. Also allows the reception of OSC messages and bundles (from Reactivision for example).(Deleting this component in 0.7.0057 crashes GH / Rhino)

OSC Channel - This component allows the storage of a single OSC Channel. Change the component's nickname to store that address' data.

OSC Dispatch - This component allows the storage of data from multiple OSC addresses.

Spreadsheet:
The spreadsheet components leverage the OpenXML engine. You must have OpenXMLSDKV2.msi installed in order for these components to work. These components read and write *.xlsx files. Supports numerical values and strings.

Spreadsheet Reader - Retrieves spreadsheet data from a file stored on your computer.

Spreadsheet Writer - Allows you to write a spreadsheet file.

XML:
These components retrieve xml data from local and web sources (such as RSS feeds).

Pachube - Retrieves data from a Pachube feed. Must have a valid Pachube API. (Deleting this component after making a connection in 0.7.0057 crashes GH / Rhino)

Pachube Update - Allows you to update a Pachube Feed. The component has variable inputs to enable streaming to various datastreams. Must have a valid Pachube API.

XML Parser - This component parses an XML file stored on your computer or on the web.

XML Writer - Writes out XML

GEO:

These components aid in the mapping and conversion of coordinates from GPS enabled devices to XYZ coordinates.

Format GEO - Takes NMEA formatted GPS coordinates and converts them to Decimal Degrees.

XYZ -> GEO - Maps XYZ coordinates in Rhino/Grasshopper to Longitude, Latitude, and Altitude.

GPS -> GEO - Maps Longitude, Latitude, and Altitude coordinates to XYZ

Elevation Service - This component returns the elevation at the coordinates you supply as inputs. It queries the Google Elevations API to do this. There are some limitations on usage, so be warned.

KML:

KML Exporter - Exports points, curves, and meshes to a KML File. Breps should be meshed before exporting. Brep support will be added soon. Object attributes such as color, transparency, line width, line color, etc will be added soon.

KML Attributes - Adds Fill Color, Line Color, and Line Width to Exported KML Objects.

Discussion Forum

Android OSCmessage to GHowl. Error Message. 7 Replies

Hello all,I am writing an android interface to communicate with grasshopper. It's the same idea as some of the OSC apps in the app store, but they aren't open source and I need to be able to have…Continue

Tags: java, osc, udp, ghowl, android

Started by Jon Blout. Last reply by Konstantin Markin Aug 8, 2022.

Ghowl xml import /export 10 Replies

Hey againHow does it work if you want to import and export the same .xml file, when the ghowl xml import has 4 output parameters, and the ghowl export has 2 input parameteres ?RegardsContinue

Tags: export, xml, Ghowl

Started by Jesper Hildebrandt Andersen. Last reply by Hannah Stevens Apr 14, 2021.

external real time data/ parse xml 5 Replies

hello, i am trying this for the first time and hoping someone can point me in the right direction. i am trying to use grasshopper + ghowl to read real time data from a weather site's API. i have a…Continue

Started by pwdarden. Last reply by Denis Cox Oct 26, 2020.

problem about UDP receiver

Hi, I am using UDP receiver in gHowl. It works well until I packaged everything into a cluster, and the UDP receiver keeps sayting "AddressAlreadyInUse: you might have opened this socket on another…Continue

Started by vapeur Jul 5, 2020.

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Comment Wall

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Comment by Matas Ubarevicius on October 4, 2011 at 12:34pm: Great work Elise. At the moment I'm writing theory thesis on exactly this kind of interaction ;) That is a ground breaking thing...

Comment by EliseElsacker on October 4, 2011 at 11:11am: Imagine an architecture that reacts on affective, expressive or cognitive signals via Brain Computer Interface Technology

Comment by Luis Fraguada on September 30, 2011 at 10:51am: Two posts by P&A Lab showing Processing connections to Grasshopper via gHowl:

Swarm Cell

Swarmy

Comment by Mirco Bianchini on September 23, 2011 at 11:08am: Loop without script with gHowl

http://vimeo.com/29489108

Comment by Luis Fraguada on September 20, 2011 at 1:41pm: Matt, what is your setup? I would need to know about more about how Kinect sends the multiple skeletons. Does it make a unique OSC url for each skeleton? If you can show me what it is that you are receiving through gHowl, I can help to try and get the multiple user skeletons.

Comment by Matt Hunter on September 20, 2011 at 6:53am: Hi Guys,

I am attempting to link OSCeleton to Grasshopper via Ghowl.

OSCeleton is sending skeleton information collected from the kinect sensor through OSC.

I am currently receiving skeleton data for one user using ghowl, but am having trouble accessing data for multiple users.

OSCeleton seems to be sending OSC messages containing skeleton information for multiple users, but it doesn’t seem to be coming through to Ghowl.

Any suggestions would be greatly appreciated.

Cheers,

Matt