To make a snowflake fade in and out gradually in a pattern

[Todd Kopriva]

Why do you think that fading in and out has to do with Scale? Fading in and out is typically accomplished by animating the Opacity property.

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Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog
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[Lee Wit]

I meant fading in and out by shrinking to zero then to a particular size, not reducing and increasing Opacity. This is to do with Scale property.

Sorry for not putting clear.

I have seen codes that control different parameters back and forth between values endlessly. I hope there is something similar for Scale.

Thanks

[Dan Ebberts]

Like this maybe:

freq = 2;
minScale = 0;
maxScale = 100;

t = time – inPoint;
amp = (maxScale-minScale)/2;
s = minScale + amp*(1-Math.cos(t*freq*Math.PI*2));
[s,s]

Dan

[Lee Wit]

Yes indeed!
Thank you!!