diff options
Diffstat (limited to 'man/loq.Rd')
| -rw-r--r-- | man/loq.Rd | 9 |
1 files changed, 7 insertions, 2 deletions
@@ -49,6 +49,11 @@ limit of detection is the x value, where the relative error of the quantification with the given calibration model is 1/k. } +\note{ + IUPAC recommends to base the LOQ on the standard deviation of the + signal where x = 0. The approach taken here is to my knowledge + original to the chemCal package. +} \examples{ data(massart97ex3) attach(massart97ex3) @@ -68,9 +73,9 @@ mwy <- lm(y ~ x, w = 1/y) # Let's do this with one iteration only - loq(mwy, w = 1 / predict(mwy,list(x = loq(mwy)))) + loq(mwy, w = 1 / predict(mwy,list(x = loq(mwy)$x))) # We can get better by doing replicate measurements - loq(mwy, n = 3, w = 1 / predict(mwy,list(x = loq(mwy)))) + loq(mwy, n = 3, w = 1 / predict(mwy,list(x = loq(mwy)$x))) } \keyword{manip} |