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: 644
Latest Activity: on Saturday

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

gHowl: Current Status 6 Replies

Currently, the gHowl components support the following:Spreadsheet In: Reading of .xls, .xlsx, and .ods files (requires the installation of Open Office)Spreadsheet Out: Writing of Excel or Open Office…Continue

Tags: open, office, xml, pachube, excel

Started by Luis Fraguada. Last reply by jm Jun 12.

Ghowl xml import /export 5 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 Jesper Hildebrandt Andersen Jun 11.

.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 May 21.

Pachube Read 2 Replies

pachube_read_01.ghI was…Continue

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

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Comment Wall

Comment

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Comment by Luis Fraguada on July 27, 2012 at 8:04am: Phillip, what is the link to the rss feed?

Comment by Philipp on July 27, 2012 at 5:54am: please, help me with connecting to rss.

have no idea how to work with it

Comment by Dhruv Seth on July 17, 2012 at 1:16pm: Hey Luis

thanks for the reply.I just started using the new firefly.

So i dont exactly require to install JMyron

Thanks again

Comment by Luis Fraguada on July 17, 2012 at 1:08pm: Hello Dhruv,

Do you have the JMyron Library installed?

Best,

Luis

Comment by Dhruv Seth on July 9, 2012 at 12:33pm: hey everyone, Although my webcam works pefectly fine with the default examples of processing.org whenever i try to run the one bundled with ghowl it says the following thing :

Comment by yahya ibraheem on June 10, 2012 at 2:12pm: hello guys, how can i get started to connect an excel file to grasshopper ? please help

Comment by Pantelis Adiavastos on May 9, 2012 at 9:05am: the OSC bundle seems to work. gHowl gets the different messages, along with their filter, but the OSC channel does not separate them

Comment by Pantelis Adiavastos on May 9, 2012 at 7:24am: the packed string seems ok, combined with split string in GH.

i'll try the bundle later. i'll get back to you for feedback

for now:

An example of how to create OSC bundles in P5 from Andreas Schlegel. (it's not made to receive bundles yet)

http://www.sojamo.de/libraries/oscP5/reference/oscP5/OscBundle.html

Comment by Luis Fraguada on May 9, 2012 at 1:45am: To note, an OSC Bundle is different than an OSC Packet. An OSC bundle comes across to GH as a list of values where as an OSC packet would be sending one value (one string or one number for example). You could do one OSC packet as a string, or an OSC Bundle which would be deserialized as a list in GH (at least that is how I thought I coded it, it needs to be tested!).