HOW CAN I DEAL WITH NEGATIVE VALUS I AM RECEIVING AFTER PERFORMING DECOMPOSITION

I have performed periodic plus smooth decomposition on u.. Now i am getting p and s as periodic , smooth component. But they contain negative values which is creating problem in further calculation....what should i do now?

Answer 1

[Matt J]

Threshold them?

x=[-2 -1 0 1 2 3]

x = 1×6

-2 -1 0 1 2 3

xpos=max(x,0)

xpos = 1×6

0 0 0 1 2 3