How to measure dynamic power..

[shinchun]

Dear all:

I was confused how to measure dynamic power.
I read some threads and found some methods ,such as.....

---------------------------------------------------------------------
.meas tran Ivi INTEG I(vi) From=1.0n TO=1.2n
.meas E_vi Param='-Ivi*Vmax'
---------------------------------------------------------------------

but this thread said this method is to measure total power
( www . edaboard . com / thread187926.html )
so how to measure dynamic power??

thanks for reading and replying my question