Estimate a limit of detection (LOD) — lod

From 966da79af48c371c05dd8011702ef2bd3b1d1e03 Mon Sep 17 00:00:00 2001 From: Johannes Ranke Date: Thu, 1 Mar 2018 10:35:09 +0100 Subject: Static documentation rebuilt using current pkgdown --- docs/reference/lod.html | 89 +++++++++++++++++++++++++++++-------------------- 1 file changed, 53 insertions(+), 36 deletions(-) (limited to 'docs/reference/lod.html') diff --git a/docs/reference/lod.html b/docs/reference/lod.html index b9c30e6..13ce70a 100644 --- a/docs/reference/lod.html +++ b/docs/reference/lod.html @@ -18,19 +18,35 @@ + + + + + + + - + + + @@ -83,45 +99,46 @@ one-sided significance test).

lod(object, …, alpha = 0.05, beta = 0.05, method = "default", tol = "default")

lod(object, …, alpha = 0.05, beta = 0.05, method = "default", tol = "default")

Arguments

object

- A univariate model object of class lm or + + + + + + + + + + + + + + + + + + + + + + + + + + +

object	A univariate model object of class `lm` or `rlm` with model formula `y ~ x` or `y ~ x - 1`, - optionally from a weighted regression. - - … - - Placeholder for further arguments that might be needed by - future implementations. - - alpha - - The error tolerance for the decision limit (critical value). - - beta - - The error tolerance beta for the detection limit. - - method - - The “default” method uses a prediction interval at the LOD + optionally from a weighted regression.
…	Placeholder for further arguments that might be needed by + future implementations.
alpha	The error tolerance for the decision limit (critical value).
beta	The error tolerance beta for the detection limit.
method	The “default” method uses a prediction interval at the LOD for the estimation of the LOD, which obviously requires iteration. This is described for example in Massart, p. 432 ff. The “din” method uses the prediction interval at - x = 0 as an approximation. - - tol - - When the “default” method is used, the default tolerance + x = 0 as an approximation.
tol	When the “default” method is used, the default tolerance for the LOD on the x scale is the value of the smallest non-zero standard - divided by 1000. Can be set to a numeric value to override this. - - + divided by 1000. Can be set to a numeric value to override this.

Value

@@ -143,16 +160,16 @@

Massart, L.M, Vandenginste, B.G.M., Buydens, L.M.C., De Jong, S., Lewi, P.J., Smeyers-Verbeke, J. (1997) Handbook of Chemometrics and Qualimetrics: Part A, Chapter 13.7.8

J. Inczedy, T. Lengyel, and A.M. Ure (2002) International Union of Pure and +

J. Inczedy, T. Lengyel, and A.M. Ure (2002) International Union of Pure and Applied Chemistry Compendium of Analytical Nomenclature: Definitive Rules. Web edition.

Currie, L. A. (1997) Nomenclature in evaluation of analytical methods including +

Currie, L. A. (1997) Nomenclature in evaluation of analytical methods including detection and quantification capabilities (IUPAC Recommendations 1995). Analytica Chimica Acta 391, 105 - 126.

Examples

@@ -200,7 +217,7 @@

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-- cgit v1.2.1

Arguments

Value

See also

Examples