Peak Lambda Max
I am trying to automate a PDA peak lambda maximum for a group of users that I support.
The analysis collects data from 210-400 nm and compares PDA lambda max in standards to samples as a means of positive ID. The PDA Max for the API is about 299 nm. However, there is other, higher absorbance at 210 nm.
Empower looks at the data in an unintelligent manner. If I create a custom field to identify Peak Lambda Max. I am returned a result of 210 every single time, as that is a true maximum in the entire plot.
So, I tried to get clever:
SAME.%.SAME.MAX(RANGE(Peak Lambda Max.,260,400))
But the above returns 0.0 every single time. If I had to guess, I am breaking Peak Lambda Max. by asking it to look over a range, 260-400 nm, which it's not allowed to do (as Max implies a single number). Furthermore, I'm restricting the Max from the true Max.
It seems like what I want shouldn't be hard to accomplish, but it is...
Has anyone every [successfully] tried to do anything similar?