Difference between PAC & Principal Components (operators)in SNAP

i want to get every components(PC_?) rate of contribution & eigenvalue?
i used two different operators in SNAP,then i got two results. i donot know the difference between them.can you help me ? thank you very much.1 2

Hi mapper,

Unfortunately, to clarify the differences and maybe merge bother PCAs is a task which is opene since a while.

Maybe you can help and share your experience. Tell which one works better for you?

thank you for your answer :grinning:

i compare pixel values between 【component_1】 and【 PC0】in same pixel,i find they are different, i donot know how to choose, can you help me? thank you