How do I classify group based on count

[#1]

Hi JMP community folks,

I have a data table with four columns as Side, TIME, Count, and ID.

I am trying to add a new column that groups a batch of IDs based on the Count column.

The data has already been sorted by Time and Count. 

The desired output I am trying to achieve is in the "Cycle (desired output)" column.

The formula which I tried to use was lag. But I am not able to achieve the desired output.

If( :Count < Lag( :Count, -1 ),
    i,
    i + 1
);

Would anyone have any solutions to this?

Thank you in advance. 

[#2]

@tantaibi ,

Here is what I'd use:

If(
	Row() == 1, 1,
	:Count >= Lag( :Count, 1 ), Lag( :Name( "Cycle (My Formula)" ), 1 ),
	Lag( :Name( "Cycle (My Formula)" ), 1 ) + 1
)

Note Lag(col, 1) is the previous row's value in "col".  I added the equal to case. to be in the previous (same) group.

[#3]

@gzmorgan0 

Thank you for the explanation! 

Now if there were 2 sides, Side A and SIde B. 

How would I "restart" the cycle count for Side B to "1"? 

Instead of letting it continue to "5" onwards?

I tried to used a condition formatting for Side A and Side B, but not sure how to define a different formula

Thank you in advance!

[#4]

This will work for multiple levels of Side.

If(
	Row() == 1, 1,
	:Side == Lag( :Side, 1 ) & :Count >= Lag( :Count, 1 ), Lag( :Name( "Cycle(My Formula)" ), 1 ),
	:Side == Lag( :Side, 1 ), Lag( :Name( "Cycle(My Formula)" ), 1 ) + 1,
	1
)