Nothing
context("q1CompSymm")
## ============================================================================
## check that for this covariance class, 'covMat' gives the
## same result whatever be the class of input used
## "factor", "character" or "integer"
## ============================================================================
set.seed(314159)
SchoolLevels <- c("Bad", "Mean", "Good")
School <- factor(1L:3L, labels = SchoolLevels)
## covariance change parameter value
myCov <- q1CompSymm(School, input = "School", cov = "homo",
intAsChar = FALSE)
coef(myCov) <- c("rho" = runif(1), "sigma2" = rexp(1))
dfInt <- data.frame(School = sample(3, size = 40, replace = TRUE))
CInt <- covMat(myCov, X = dfInt)
dfChar <- within(dfInt, School <- SchoolLevels[School])
CChar <- covMat(myCov, X = dfChar)
dfFact <- within(dfChar, School <- factor(School, levels = SchoolLevels))
CFact <- covMat(myCov, X = dfFact)
err <- max(c(max(abs(CInt - CChar)), max(abs(CInt - CFact))))
test_that(desc = "Identical covariances using int, char or factor: ",
code = expect_true(err < 1e-10))
err <- max(c("IntChar" = max(abs(attr(CInt, "gradient") -
attr(CChar, "gradient"))),
"IntFact" = max(abs(attr(CInt, "gradient") -
attr(CFact, "gradient")))))
test_that(desc = "Identical cov. Gradients using int, char or factor: ",
code = expect_true(err < 1e-10))
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