I am working with a data series that relates a "result" (pH, mass, etc) to "sample code" and, in order to calculate my intersect, slope and R² I need an index starting with 1
But when I filter my data, I need that the first sample be reenumerated to 1. Ex:
- First analysis: Sample 1 to 20 (1 = 1, 2 = 2, 3 = 3, ..., 20 samples)
- Second analysis: Sample 8 to 16 (8 = 1, 9 = 2, 10 = 3, ..., 16 = 9). For this I suppose ALLSELECTED is needed
I need all the samples ranked by date (ascending), and, if a date repeats for a distinct sample, it's still ranked as a different number (Ex: B2AA/22 and B3AA/22) were analysed the same day, but are different samples, so B2AA/22 = 1 and B3AA/22 = 2)
The same way I want select samples of annother product, ex: B1AA/22 - B12AA/22, and, when I change the products the index restart with 1.
Is there a way to rank them in a way that every sample has a different number, in ascending order, according to date and that restarts the count with my slicers selection?
But, the rank just repeats the same number...
I expalin with more details of the statistics on DAX on LINEAR REGRESSION - X-AXIS IN TEXT FORMAT - Microsoft Power BI Community
Thank you very much