• Adobe After Effects Expressions

  expression needed to create random display of zeros and ones

  Posted by Paul Colin on April 9, 2014 at 5:06 pm

  I need some help creating an expression that would randomly display text, zeros and ones only.
  In other words if I have the following text: 0100111 I need it to cycle through randomly to change the 1’s to to 0’s and the 0’s to 1’s. I had been using the “buzz words” text preset to do this. But it is much too cumbersome to type in several variations of the basic text again and again in the expressions box.
  Anybody have a notion of a simple expression to do this?
  Thanks in advance!
  Paul Colin

  Paul Colin replied 12 years, 1 month ago 2 Members · 2 Replies
• 2 Replies

• 

  Dan Ebberts

  April 9, 2014 at 5:28 pm

  Try this source text expression:

  numDigits = 7;
  freq = 5; // changes per second

  seed = Math.floor((time-inPoint)*freq);
  seedRandom(seed,true);
  str = “”;
  for (i = 0; i < numDigits; i++) str += (random() < .5) ? “0” : “1”;
  str

  Dan
• 

  Paul Colin

  April 9, 2014 at 5:46 pm

  Thanks Dan!
  Will try as soon as I get back to my studio. At work now no access to AE.

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