fit_distr_fun  R Documentation 
Given the name of a family of 1dimensional distributions, this function chooses a
particular member of the family that fits the data and returns a function in the
selected p, d, q, or r format. When analytical solutions do not exist, MASS::fitdistr()
is used to estimate the parameters by numerical maximum likelihood.
fit_distr_fun(data, formula, dist, start = NULL, ...)
data 
A data frame. 
formula 
A formula. A distribution will be fit to the data defined by the
right side and evaluated in 
dist 
A string naming the function desired. Tyically this will be
"d", "p", "q", or "r" followed by the (abbrevation for) a family of
distributions such as "pnorm", "rgamma". Fitting is done use

start 
Starting values for the numerical maximum likelihood method
(passed to 
... 
Additional arguments to MASS::fitdistr() 
A function of one variable that acts like, say,
pnorm()
, dnorm()
, qnorm()
, or rnorm()
, but with the default
values of the parameters set to their maximum likelihood estimates.
fit_distr_fun( ~ cesd, data = mosaicData::HELPrct, dist = "dnorm") fit_distr_fun( ~ cesd, data = mosaicData::HELPrct, dist = "pnorm") fit_distr_fun( ~ cesd, data = mosaicData::HELPrct, dist = "qpois")
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