rgr (version 1.1.0)

gx.triples.fgx: ANOVA to Estimate if Triples are a Valid Subset

Description

Function to execute a simple ANOVA to determine if the Field Duplicates are a valid subset of the regional coverage samples, and if the Field Duplicates pairs have equivalent variability.

Usage

gx.triples.fgx(x, RepStat, name = deparse(substitute(x)),
	log = FALSE)

Arguments

x

a file of regional coverage and field duplicate data.

RepStat

the Replicate Status code.

name

a informative description of the variable in the data file x for display as a table heading, for example, name = "Ba (mg/kg - Aqua Regia digestion) in <2 mm="" unmilled="" c-horizon="" soil"<="" code="">. The default is simply the data file name,

log

if a logarithmic transformation of the data is required to meet homogeneity of variance considerations (i.e. severe heteroscedasticity) set log = TRUE. This is also advisable if the range of the observations exceeds 1.5 orders of magnitude.

See Also

ltdl.fix.df, remove.na, triples.test1, gx.triples.fgx, triples.test2

Examples

## Make test data available
data(triples.test2)
attach(triples.test2)

## Carry out ANOVAs for equivalence of variances
gx.triples.fgx(Ba_ppm, RS, name = 
"Ba (mg/kg - Aqua Regia digestion) in <2 mm unmilled C-horizon soil")

## Detach test data
detach(triples.test2)