Stock close above 20 SMA

In general, one way to test whether price is above its MA is:

and [PPO LIne (1, x, 1) > 0]

where "x" is the length of the MA.

This is kind of an "off label" use for this indicator.

(

See this link for how it's usually used:

https://stockcharts.com/school/doku.php?id=chart_school:technical_indicators:price_oscillators_ppo

)

So, you can re-phrase the question, how to test for PPO Line above 0 for x days. And you can re-phrase that question as, how to test for a minimum value for x days - in your case that minimum value is 0.

The scan engine has a function to test for minimum values - min( ) - explained here:


http://stockcharts.com/docs/doku.php?st=functions&id=scans:functions


So,

and [min(50, PPO Line(1,x,1)) > 0]