[Dan Ebberts]

Which expression is it?

[Dan Ebberts]

something like this maybe:

L = thisComp.layer("target");
falloff = 200;
d = length(toComp(anchorPoint),L.toComp(L.anchorPoint));
linear(d,0,falloff,100,0)

[Dan Ebberts]

Something like this should work:

n = 10; // number of layers participating
count = 0;
for (i = 1; i <= Math.min(thisComp.numLayers,n); i++){
  if (thisComp.layer(i).enabled) count++;
  if (i >= index) break;
}
count

[Dan Ebberts]

It’s not particularly simple, but if your graph is a function of x (never loops back so there are multiple values of y for the same x), a binary search like this should work:

x = thisComp.layer("Vertical Line").transform.position[0];
L = thisComp.layer("Graph");
p = L.content("Shape 1").content("Path 1").path;
iterations = 12;
p0 = L.toComp(p.pointOnPath(0));
p1 = L.toComp(p.pointOnPath(1));
if (x < p0[0]){
  p0;
}else if (x > p1[0]){
  p1;
}else{
  lower = 0;
  mid = .5;
  upper = 1.0;
  for ( i = 0; i < iterations; i++){
    pCur = L.toComp(p.pointOnPath(mid));
    if (pCur[0] == x) break;
    if (pCur[0] > x){
      upper = mid;
    }else{
      lower = mid
    }
    mid = (upper+lower)/2;
  }
  pCur
}

[Dan Ebberts]

Math.floor rounds down to the nearest integer, Math.round rounds to the nearest integer.

[Dan Ebberts]

Like this:

SK = thisComp.layer("Black Solid 1").effect("Sound Keys")("Output 1");
Math.floor(SK/10)*10

or this:

SK = thisComp.layer("Black Solid 1").effect("Sound Keys")("Output 1");
Math.round(SK/10)*10

[Dan Ebberts]

Try this:

m = marker;
t = linear(time,m.key(1).time,m.key(2).time,key(1).time,key(4).time);
valueAtTime(t)

[Dan Ebberts]

Try this:

[100/length(u),100/length(v),100/length(w)]

[Dan Ebberts]

Try changing the 6th line to:

myDelay = (textTotal - textIndex)*delay;

[Dan Ebberts]

That’s quite different. This should work, but it might become a processor hog if your comp gets too long:

aud = thisComp.layer("Audio Amplitude").effect("Both Channels")("Slider");
threshold = 5;
tStart = 0;
runFrames = 0;
f = timeToFrames(time);
while (f >= 0 ){
  if (aud.valueAtTime(framesToTime(f)) > threshold){
    runFrames++;
  }
  f--;
}
tStart + framesToTime(runFrames)