Particles Radius over time issues...

[entry-newspaper]

Greetings,

I'm working on learning the fundamentals for the new C4D particles system, and I've encountered a roadblock.
I'm trying to learn how to do something (seemingly) simple like scale the size of the particles, over their life. But I'm not getting even remotely the expected results. (Please see attached scene file.)

I was watching Sketchy Visuals' Beginners Guide to Basic Particles... where he demonstrates how to control particle size (radius) over time (age) with the Data Mapper. But right away, I notice a few small discrepancies, between his controls, and mine. I'm running 2025.1.2 - but not sure if his was a slightly older version of 2025? Regardless, I followed his instructions as best I could, but my results are nothing remotely like his; which is what I'm after.

Can someone please take a look at what I have set up, and see what I'm doing incorrectly? I'm looking for my particles to smoothly scale up and down, during their lifetime.

Thanks!

Particles Radius by Age.c4d

[Dr. Sassi]

Hi entry-newspaper,

Thanks for the file!

Please set the "Upper In" to a higher value Data Mapper. The Curve you have set up works only for that time value pair.

CV4_2025_drs_25_PAsa_01.c4d

login-to-view

Cheers

[entry-newspaper]

Fantastic. Thank you, Dr. Sassi.

[Dr. Sassi]

You're very welcome, entry-newspaper!

Thanks for taking the time.

Have a great weekend