Category: interactive media art

Posted on

github commands

notes

I guess, because I didnt have this blog last year, I couldn’t find my notes about git and github repositories.

So I ran into situations where I tried to send committed projects from the local repository to the github – without realizing that I needed to pull any commits down from github first, using:

# git pull origin master

Merging just doesn’t seem to work well at all. So my advice to self would be, always pull from github before you start working on your code. Or even when you create a new github with a README.md file.

Useful commands:

add new file:

git add filename

commit any changed files

git commit -a -m "this is a commit"

send commits up to github

git push origin master

 

 

 

 

 

Posted on

sending Tweets from Max using ruby, xively.com, and zapier.com

This is a ruby version of the Max tweetCurl5 patch (which tweets via xively.com) described here:

https://reactivemusic.net/?p=5447

In this version, the Max patch communicates via OSC to a background server running in ruby. An advantage of this method is that both the patch and the server are  compact and easy to understand. The Max patch does things in a Max way. And likewise with the ruby script.

Here’s a screen shot of the Max patch:

 files

Max

  • ruby-max-tweet.maxpat

ruby

  • ruby-max-tweet.rb

The ruby script requires installation of the following gems

  • patron
  • osc-ruby

For example:

# gem install patron

authorization

  • The xively.com feed id and api-key are embedded in ruby script
  • To get this project to work you’ll need a Twitter account. And you’ll need to set up a device (feed) at xively.com and a ‘zap’ at zapier.com as directed in this post. It explains how to send tweets using triggers. https://reactivemusic.net/?p=6903

instructions

  • Open the Max patch: ruby-max-tweet
  • In a terminal window run the ruby script:
  • # ./ruby-max-tweet.rb
  • In the Max patch, type in a tweet. Press the green button to send.
  • When you have Tweeted enough, end the ruby server program by typing <ctrl-c>

download

The files for this project can be downloaded from the intenet-sensors archive at github

https://github.com/tkzic/internet-sensors

Posted on

ipadOscMidi app with Max patch

Have set up a Github repository for the ipadOscMidi simulator app: https://github.com/tkzic/ipadoscmidi

There is also a companion Max patch for testing

Here is the README file for the project:

ipadMidiOsc
-----------
March 4, 2013
version 1.0

This program is a simulator to test Midi and Osc communication in iOS. There is a companion Max/MSP patch in the archive (oscmiditest3.maxpat). The Max patch lets you control the user interface on the iPad. And it well display incoming messages from the iPad.

I have only tested the default iOS midi networking devices via Mac OS, and an iRig Midi interface. 

This is the only documentation right now - but there are big plans, yeah, for a programming guide, and a free app store app, along the lines of audioGraph.

I wanted to get this initial version out before the spacecraft lands in the backyard.

Acknowledgements:

The Midi code was derived from PGMidi by Pete Goodliffe
The Osc code was derived from OscPack by Ross Bencina

Thank you.

Tom Zicarelli
[email protected]

Notes:

Local Project files are in: tkzic/oscapps/ipadmiditest4

I made the update described here for iOS 6 compatibility:

http://stackoverflow.com/questions/12548856/coremidi-pgmidi-virtual-midi-error-in-ios6

 

 

 

Posted on

Updates to audiograph for iOS 6

notes

Today I’m attempting to update audiograph to run under the current iOS/xcode releases. Here are some helpful solutions to resolving compilation errors and warnings…

(update) Had problems with git, because I forgot to pull the changes from Michael Tyson, down from github before I made changes to the files locally and committed them.

Ended up doing a wholesale copy and a lot of duplicated effort – anyway it seems to work now.

Very important: The current local version of audiograph is in tkzic/coreaudio/audiograph

I have also submitted a new version 1.1 to app store. but its in the same folder I just mentioned.

runtime view controller error:
<code>'A view can only be associated with at most one view controller at a time!</code>

http://stackoverflow.com/questions/12434937/uiviewcontrollerhierarchyinconsistency-when-trying-to-present-a-modal-view-contr

group table view default color warning:

http://stackoverflow.com/questions/12539861/group-table-view-background-color-is-deprecated-in-ios-6-0

deprecated AvAudioSession methods (iOS 6.0)

I commented these out and added the updated methods

see this link for setDelegate

http://stackoverflow.com/questions/13078901/cocos2d-2-1-delegate-deprecated-in-ios-6-how-do-i-set-the-delegate-for-this

miscellaneous

http://developer.apple.com/library/ios/#documentation/AVFoundation/Reference/AVAudioSession_ClassReference/DeprecationAppendix/AppendixADeprecatedAPI.html

see Apple docs for everything else

The ‘play’ button on the bottom toolbar didn’t work on the 5g ipod touch (with taller screen)

Here’s what fixed it (in applicationDidFinishLaunching…)

from this stack overflow post: http://stackoverflow.com/questions/12395200/how-to-develop-or-migrate-apps-for-iphone-5-screen-resolution

The only really required thing to do is to add a launch image named “[email protected]” to the app resources, and in general case (if you’re lucky enough) the app will work correctly.

In case the app does not handle touch events, then make sure that the key window has the proper size. The workaround is to set the proper frame:

<code>[window setFrame:[[UIScreen mainScreen] bounds]]</code>

There are other issues not related to screen size when migrating to iOS 6. Read iOS 6.0 Release Notesfor details.
Posted on

Twitter streaming API in Max

World map and radio simulation

note August 3, 2022 –

This program is broken on Mac OS Monterey. The PHP code is throwing errors in the OSC library.  I’m not certain there is a reasonable workaround at this point and will be looking at replacing the php code with node.js or another more reliable platform. Also, as noted below – php is no longer installed in Mac os – so it requires homebrew or macports

features

  • Twitter streaming v1.1 API and Twitter Apps (using http requests and Oauth in php)
  • lat/lon conversion and map plotting in Max
  • sending data to Max using OSC in php
  • ‘speaking’ tweets using several voices (text to speech)
  • Using geo-coordinates to control an FM synthesizer
  • Converting Tweet text to Morse code
  • Using a data recorder to replay/save data streams (Max lists)

Compare to satellite photo of earth – note the pattern of lights.

download

https://github.com/tkzic/internet-sensors

folder: twitter-stream

files

Max
  • world3.maxpat (main patch)
  • data_recorder_list-tz.maxpat (abstraction for recording data)
  • data-recorder-wrapper.maxpat (abstraction for recording data)
  • worldMap.jpg
  • twitter-morning.txt (sample data – not required)
php
  • ctwitter_max3.php (main program)
  • ctwitter_stream_max3.php (twitter engine)
  • udp.php (Osc client)

3 August, 2022

(note: starting with mac os monterey, php is no longer included in mac os. You can install it with homebrew. See this post: https://www.ergonis.com/products/tips/install-php-on-macos.php

externals

[note]  The project displays Tweets without these externals, but you won’t hear any speech

authorization

In addition to having a Twitter account, you will need to set up a Twitter application from the developer site here:

https://dev.twitter.com/apps

Good instructions on how to do this can be found in this stackoverflow.com post under this heading: So you want to use the Twitter v1.1 API?

http://stackoverflow.com/questions/12916539/simplest-php-example-for-retrieving-user-timeline-with-twitter-api-version-1-1

When you get to step 5 – in the instructions – instead of writing your own code, just use a text editor to copy your access tokens into this php program which is provided:

  • ctwitter_max3.php

Replace the strings in this line of code by copying and pasting the appropriate ones from your Twitter application:

$t->login('consumer_key', 'consumer secret', 'access token', 'access secret');

 

So it will end up looking something like this:

$t->login('ZdzfNaeflihFydfOHeOA', 'eXzUOfhif4riifgRbCTnnSN0T7neYtg8dIWDC7j3bs', '205589709-5kRI1fllJvU94jjffeerSn9LrTajtxSrvO8', 'u5MuSxPseBemUIBWlMxEFaw899feedXA0eHlReCnQ');


Yeah – its cryptic…


instructions


1. open the Max Patch: world3.maxpat




2. in a terminal window run the php program: ctwitter_max3.php. [note] it runs forever. Press <ctrl-c> when you want to stop streaming Tweets.










php ./ctwitter_max3.php






3. Switch back to world3.maxpat to see dots populating the map


4. In Max, press the speaker icon (lower left) to turn on audio.


5. Activate  voice synth/morse code using the blue toggle (lower left)


6. Clear the map by pressing the blue message box: “clear, drawpict a 0 0”


7. Stop the Tweet stream by pressing <ctrl-c> in the terminal window




special voice fx


If you have Soundflower installed, the Mac OS speech synth output can be routed back to Max for audio processing. This is somewhat complicated, but shows how to process audio in Max from other sources.


    

  • In MacOS System Preferences, set audio output device to Soundflower 2ch
    • 

  • Turn up hardware volume control on your computer
    • 

  • In Max, Options | Audio Status, set input device to Soundflower 2ch
    • 

  • In world3.maxpat double click on [p audio engine] (lower left). Then in the audio-engine sub-patch activate the toggle, (lower right) for voice-fx
    • 



data recording


The built-in data recorder/playback is on the left side of world3.maxpat:




    

  • toggle ‘record’ (red toggle)  to start or stop data recording
    • 

  • Note that data will only be recorded when the php program is streaming Tweets in the terminal window (see above)
    • 

  • Press /play message or other transport controls to replay data
    • 





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<span style="font-family: 'Helvetica Neue', Helvetica, Helvetica, Arial, sans-serif; font-size: 23px; font-weight: bold; line-height: 1.1;">revision history</span>


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revision history


1/19/2021


Updates for Max8 and Catalina:


Replaced [aka.speech] external with Jeremy Bernstein’s [shell] external and the Mac OS command line ‘say’ command.


Reinstalled Java Development Kit for [mxj] object


I revised the php code for the Twitter streaming project, to use the coordinates of a corner of the city polygon bounding box. That seems to be more reliable than the geo coordinates which are absent from most Tweets.


    

  • updated 3/26/2014 – fixed runtime error in php server
    • 

  • updated 2/2/2014 – simplified user interface and updated audio engine
    • 

  • updated 9/2/2013 for Twitter v1.1 API with Oauth – note that older versions of this project are broken due to discontinued Twitter v1.0 API as of June 2013
    • 




	


	





		

		
Posted on 
Twitter search in Max
	


	
	

		
Here’s a basic pattern:


    

  1. Send search string to Twitter
    2. 

  2. Get JSON result
    3. 

  3. Parse result and do something with it.
    4. 



From Max, there are many ways to do this:


searchtweet – mxj, twitter4j


by Gokce Kinayoglu


http://cycling74.com/toolbox/searchtweet-design-patches-that-respond-to-twitter-posts/




This patch demonstrates the Twitter search API. Its self contained within Max – using the [mxj search tweet] external. This object allows you to input


    

  •  keyword
    • 

  • maximum number of results
    • 



The response is:


    

  • username
    • 

  • Tweet text
    • 

  • date/time
    • 



This patch is a great way to get Tweets into Max. You can use a [metro] object to poll the API. There are no additional programs running outside of Max. 


The limitation is lack of flexibility. You don’t have access to any of the other parameters in the request response. For example, geographic data. Also, it can be difficult to install and maintain java [mxj] programs in Max.


Here’s a screenshot of a patch which takes the output of the above patch and sends it to the aka.speech object – which runs the Mac Os built in text-to-speech program