corandcov | R Documentation |
User-written function to output the covariance parameters
corandcov(glsob, cov = TRUE, ...)
glsob |
An object of class "gls" representing the linear model fit |
cov |
Default is TRUE. Not sure how this is used |
... |
Additional arguments |
A list with correlation matrix, variance structure, and covariance matrix.
https://stats.idre.ucla.edu/r/examples/alda/r-applied-longitudinal-data-analysis-ch-7/
## Not run:
library(dplyr)
library(readr)
library(nlme)
opposites <- readr::read_csv(
file = "https://stats.idre.ucla.edu/stat/r/examples/alda/data/opposites_pp.txt",
col_names = TRUE)
dplyr::glimpse(opposites)
unstruct <- gls(opp ~ time * ccog,
opposites,
correlation = corSymm(form = ~ 1 |
id),
weights = varIdent(form = ~ 1 | wave),
method = "REML")
corandcov(unstruct)
## End(Not run)
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