AE Wizard Shinsuke Matsumoto Posts a Look at Using valueAtTime() to Create an Advanced Delay
If you are looking to create more control over your motion, expressions are a great alternative or addition to keyframes. Motion Artist Shinsuke Matsumoto (beatgram) has a look at using expressions, specifically valueAtTime() for creating advanced delay effects.
“I think one of the most used expression for After Effects is “valueAtTime().“ That’s pretty useful for offsetting timing/trail movement and so on.” Shinsuke says. “I use it on almost every project, and I’m sure that many animators/mographers use it frequently.”
That is probably one of the reasons that Shinsuke Matsumoto shares his expression for creating an advanced delay effect that can easily offset motion. If you want to animate with a delay, check the code and download an AE file.