Comparing Dif Bet Two SMAs for Dif Days

DoctorT

Hi!

To build a scan, after I test that today's SMA (9) is above today's SMA (26) and that yesterday's SMA(9) is above yesterday's SMA(26), which I know how to do,

is there a way to test that

the difference between today's SMA(9) and today's SMA(26)

is greater than

the difference between yesterday's SMA(9) and yesterday's SMA(26)?

How do I write it?

Thank you!

Dr. T

markd

If you wanted to use emas, you could just use MACD Line(9,26,9) > 1 day ago MACD Line(9,26,9).

For sma you have to write it out, which just involves some brackets and a time modifier.

So you have your basic condition frame work

and [ ]

then brackets around the first subtraction operation for today, to tell you how far apart they smas are:

[ sma(9,close) - sma(26, close) ]

then brackets around the second subtraction operation for yesterday (1 day ago):

[ 1 day ago sma(9, close) - 1 day ago sma(26, close) ]

then a comparison operator between the two subtraction operations makes it:


and [ [ sma(9,close) - sma(26, close) ] > [ 1 day ago sma(9, close) - 1 day ago sma(26, close) ] ]

DoctorT

Dear Mark D,

Thank you for your prompt reply.

So the key is to use double brackets. I'll try it.

Dr. T

markd

Well, the "extra" brackets are for clarity. The scan engine's syntax doesn't require them in this case. But I always use them to group the elements of an operation, just to make it clear what you are comparing to what.