Nothing
library(simputation)
if ( requireNamespace("norm",quietly = TRUE) ){
## EM imputation
x <- iris[-5]
x[1:3,1] <- x[5:7,2] <- NA
expect_equal(sum(is.na(impute_em(x, ~ . ))),0)
expect_equal(sum(is.na(impute_em(x, ~ . - Sepal.Width))),3)
x <- iris[-5]
x[1:3,1] <- x[4:7,4] <- NA
d1 <- impute_em(x, Sepal.Length ~ .)
expect_equal(sum(is.na(d1[,1])),0)
expect_equal(sum(is.na(d1[,4])),4)
# x <- iris
# x[1:4,1] <- x[3:7,5] <- NA
# expect_warning(impute_em(x, Sepal.Length ~ .))
# grouped imputation
x <- iris
x[1:3,1] <- x[5:7,2] <- NA
expect_equal(sum(is.na(impute_em(x, ~ . -Species))),0)
expect_equal(sum(is.na(impute_em(x, ~ . -Species | Species))),0)
expect_false(identical(
impute_em(x, ~ . - Species)
, impute_em(x, ~ . - Species|Species)
))
}
if ( requireNamespace("missForest",quietly=TRUE) ){
## missForest imputation
dat <- iris
dat[1:3,1] <- dat[4:7,5] <- NA
expect_true(!any(is.na(impute_mf(dat, Species + Sepal.Length ~ Sepal.Width))))
d1 <- impute_mf(dat, Sepal.Length ~ .)
expect_equal(sum(is.na(d1[,1])),0)
expect_equal(sum(is.na(d1[,5])),4)
}
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