The qra package provides the functions: checkDisp, getRho, extractLT, getScaleCoef, scaleLocAdjust, fieller, gpsWithin, varRatio, foldp, graphSum, fpower
The three vignettes provide examples of the use of the functions.
fieller: Calculates lethal dose estimates, using Fieller's
formula to calculate 95
of the functions noted below are useful ancillaries to
fieller2: Use when a folded power link has been used.
extractLT: Obtains complete set of LT or LD estimate, when it is
convenient to get results from several models at the same time.
foldp: Calculates the ratio of
getRho Extracts estimates of the intra-class
correlation from a glmmTMB model object with betabinomial error.
See the vignette [timeMortality] for details of the parametization
used for the
getScaleCoef: Extracts the scale coefficients from a vector
that has been scaled using
scale, as needed so that the scaling
can be undone.
gpsWithin Renumbers group identifiers so that they run from
1 to number of groups within for each level of the specified factor.
scaleLocAdjust: Returns, for
glmmTMB models with a
betabinomial error, dispersion factors (i.e., multipliers for the
binomial variance) as functions of predicted values.
varRatio: Returns a first order approximation to the variance
of the $y$-ordinate to slope ratio. This is used in the
type="Delta" approximation, for calculation of LT and LD
confidence intervals. Primarily, this is provided for purposes
of comparison, to make it easy to show how poor the approximation
can be, and to warn against its general dewvuse!
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.