[Dan Ebberts]

Sure, you could include something like this in your expression:

smoothAudio = thisComp.layer("Audio Amplitude").effect("Both Channels")("Slider").smooth(.25,10);

[Dan Ebberts]

It’s not simple, but this might help:

http://www.motionscript.com/articles/speed-control.html#other-applications

[Dan Ebberts]

I’m not sure if this is what you’re after, but your expression needs to define what happens between markers 2 and 3.

n = 0;
if (marker.numKeys > 0){
  n = marker.nearestKey(time).index;
  if (marker.key(n).time > time) n--;
}
if (n<=1){
  loopIn("pingpong");
}else if (n>2){
  loopOut("pingpong");
}else{
  value;
}

[Dan Ebberts]

I think you’d want to set it up like this:

t1 = key(1).time;
t2 = key(2).time;
v1 = hexToRgb("0");
v2 = hexToRgb("739c8a");
linear(time,t1,t2,v1,v2)

[Dan Ebberts]

You can’t really move keyframes with expressions, but you can simulate it with something like this (assumes there are only 2 keyframes):

t1 = key(1).time;
t2 = key(2).time;
tNew = effect("Slider Control")("Slider");
t = linear(time,t1,tNew,t1,t2);
valueAtTime(t)

[Dan Ebberts]

It worked fine for me once I cleaned up the way code gets trashed when you post it here without formatting it. This is what I used:

weights = [
'Light',
'Regular',
'Bold',
'Ultra',
'Black'
];
family = thisProperty.style.font;
family = family.split('-');
select = Math.floor(clamp(effect("Select")("Slider"), 0, weights.length - 1));;
createStyle().setFont(family[0] + '-' + weights[select]);

[Dan Ebberts]

If you’re using the JavaScript expression engine, you can improve things a lot by using array.includes():

par = parent.text.sourceText;
src = par.charAt(par.length-1);
lib = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"];
libNum = ["1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "-", "/", ":", ";", "(", ")", "$", "&", "@", '"', '“', '”', ".", ",", "?", "!", "'", "’"];
libSym = ["[", "]", "{", "}", "#", "%", "^", "*", "+", "=", "_", "\\", "|", "~", "<", ">", "€", "£", "¥", "•"];
if (src == " ") {
	1;
}else if (lib.includes(src)){
	2;
}else if (lib.includes(src.toLowerCase())){
	3;
}else if (libNum.includes(src)){
	4;
}else if (libSym.includes(src)){
	5;
}else{ // just in case
	6;
}

[Dan Ebberts]

This should work:

array = ["first","second","third","fourth"];
myFont = ["ArialMT","Calibri","LucidaConsole","MyriadPro-Regular"];
t = Math.floor(random(array.length));
f = Math.floor(random(myFont.length));
s = style;
s.setFont(myFont[f]).setText(array[t]);

[Dan Ebberts]

Try this:

n = 5; //blend frames
holdTime = .5; //time to hold each position (seconds)
minVal = 100;
maxVal = 1000;
seed = Math.floor(time/holdTime);
t = time%holdTime;
seedRandom(seed,true);
x2 =random(minVal,maxVal);
seedRandom(seed-1,true);
x1 =random(minVal,maxVal);
x = linear(t,0,framesToTime(n),x1,x2);
y = value[1];
[x, y]

[Dan Ebberts]

Ah, OK. I think this should work:

cb = effect("Checkbox Control")("Checkbox").value;
if (cb){
  n = 0;
  if (numKeys > 0){
   n = nearestKey(time).index;
    if (key(n).time > time){
      n--;
    }
  }
  if (n == 0){
    t = 0;
  }else{
    t = time - key(n).time;
  }
  if (n > 0 && t < 1){
    v = velocityAtTime(key(n).time - thisComp.frameDuration/10);
    amp = .02;
    freq = 3.0;
    decay = 5.0;
    value + v*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t);
  }else{
    value;
  }
}else{
  value;
}