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: 633
Latest Activity: 1 hour ago

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

.xml export 5 Replies

I used ghwol for importing an .xml file, and ghowl for making a string out of it, connecting it to a panel. But since its not possible to stream the file as .xml, what can you then do to get the data…Continue

Started by Jesper Hildebrandt Andersen. Last reply by Giulio Piacentino on Tuesday.

Pachube Read 2 Replies

pachube_read_01.ghI was…Continue

Started by konrad k sobon. Last reply by konrad k sobon May 9.

problem 1 Reply

I feel so hard to see cant import the hypermedia.net, I dont know what s the problem~I tested the example but it always failed.…Continue

Started by Aimee Zhou. Last reply by Luis Fraguada Apr 26.

error opening file 3 Replies

am trying to open a grasshopper file done one year ago probably with a previous version, and grasshopper is asking me for spreadsheet Out component.Is it a Ghowl version problem or a Grasshopper…Continue

Started by stefano suarez. Last reply by Luis Fraguada Apr 19.

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Comment Wall

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You need to be a member of gHowl to add comments!

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