akq_na: Check within an Environment for NA (Missing) Daily...

In wasquith-usgs/akqdecay: Many Distributional Statistics of USGS Daily Streamflow Hydrographs and Powerful Utilities

Description

This function has two effects depending on the anticipated type, which means the contents, for an R environment. First, check by streamgage for exclusively one NA stored in the R environment created by fill_akqenv and return those site numbers. Second, check by streamgage for zero rows of the daily-value data.frame created by fill_akqenv and return those site numbers.

Usage

akq_na(akqenv, silent=FALSE, ...)

Arguments

akqenv	The R environment previously populated by fill_akqenv;
silent	Suppress informative calls to message(); and
...	Additional arguments to pass (see source code to ascertain flexible usage).

Value

An R vector containing the sites for which the entry akqenv is NA.

Author(s)

W.H. Asquith

See Also

fill_akqenv

Examples

sites <- c("05403500", "05405000") # Two USGS streamgages in Wisconsin
WisExample <- new.env(); fill_dvenv( sites,              envir=WisExample,
                                     sdate="1945-01-01", edate="2014-12-31")
WisAKQ <- new.env(); fill_akqenv(dvenv=WisExample, envir=WisAKQ)
WisAKQ$"99999999" <- NA; # insert a fake site with simple NA
print(akq_na(WisAKQ)) #

wasquith-usgs/akqdecay documentation built on Nov. 9, 2020, 1:13 p.m.