Last value of a group

[Wilianfilho_ps]

Hi community,

I have de following dataset: 

id	step	val1	val2
101	1	5	5
101	2	8	5
101	3		10
101	4	3	8
101	5		15
102	1		9
102	2	2	7
102	3		5
102	4	7	13
102	5		8

I need get a value of val2 where val1 is not null, for each ID, respecting the step. In example above, I need value 8 for ID 101 and 13 for ID 102. I tried use lastnoblank in a matrix with ID in rows but does not worked.

Basically, the result that I need in this example, is the matrix below:

ID	Val1	Val2	Diff
101	3	8	5
102	7	13	6

Anybody help me in this case?

[mahoneypat · Accepted solution]

Here is a measure expression that calculates your different directly.  If you want to return Val1 and Val2, just return those variables instead of the difference.

Difference =
VAR __maxstepnotnull =
    CALCULATE ( MAX ( val[step] ), NOT ( ISBLANK ( val[val1] ) ) )
VAR __val1 =
    CALCULATE ( MIN ( val[val1] ), val[step] = __maxstepnotnull )
VAR __val2 =
    CALCULATE ( MIN ( val[val2] ), val[step] = __maxstepnotnull )
RETURN
    __val2 - __val1

If this works for you, please mark it as the solution.  Kudos are appreciated too.  Please let me know if not.

Regards,

Pat