Forum Discussion
LINEST forEach
I am trying to crerate a measure using LINEST that would give me the slope but I have not been successful.
PFA what I have tried.
Following is what I desire
| Country | x | y | slope |
|---------|---|---|-------|
| C1 | 1 | 3 | 1.75 |
| C1 | 2 | 5 | 1.75 |
| C1 | 3 | 7 | 1.75 |
| C2 | 2 | 3 | 2.25 |
| C2 | 3 | 6 | 2.25 |
| C2 | 4 | 8 | 2.25 |
To the best of my knowledge, I am passing on the correct filtered table to LINEST
Thank you in advance
Hi smpa01 ,
Please try:
Measure = var _a = FILTER(ALL('fact'),'fact'[Country]=MAX('fact'[Country])) return MAXX(CALCULATETABLE(LINEST('fact'[y],'fact'[x]),_a),[Slope1])Final output:
Best Regards,
Jianbo Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
smpa01 You could create a measure that returns a text table using TOCSV and parse that.
For example:
LINEST Output = VAR _filteredTable_ = FILTER ( ALL ( 'fact' ), 'fact'[Country] = MAX ( 'fact'[Country] ) ) VAR _linEst_ = LINESTX ( _filteredTable_, 'fact'[y], 'fact'[x] ) VAR _toText = TOCSV ( _linEst_, , "|", FALSE() ) RETURN _toTextThen you can define the following:
Slope1 = PATHITEM ( [LINEST Output], 1 )ResidualSumOfSquares = PATHITEM ( [LINEST Output], 10 )
5 Replies
Hi smpa01 ,
Please try:
Measure = var _a = FILTER(ALL('fact'),'fact'[Country]=MAX('fact'[Country])) return MAXX(CALCULATETABLE(LINEST('fact'[y],'fact'[x]),_a),[Slope1])Final output:
Best Regards,
Jianbo Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
v-jianboli-msft just being curious here. So if I need Total Sum of Square, Residual Sum of Square and R Square, I need to create 3 seperate measures (TSS, RSS and RSquare) and then create subsequent measures for each ( incorect TSS, RSS, RSquare) immediately created measures like you did above to derive at the correct TSS, RSS, RSquare value for the filter context?
You have to create different measures, one for each statistic you need. There is currently no way to create a DAX function that returns a table value to be shared by multiple measures.
