Miscellaneous methods for emmGrid objects
# S3 method for class 'emmGrid'
str(object, ...)
# S3 method for class 'emmGrid'
print(x, ..., export = FALSE)
# S3 method for class 'emmGrid'
vcov(object, ..., sep = get_emm_option("sep"))
linfct(object, ...)
# Default S3 method
linfct(object, ...)An emmGrid object
(required but not used)
An emmGrid object
Logical value. If FALSE, the object is printed.
If TRUE, a list is invisibly returned, which contains character
elements named summary and annotations that may be saved
or displayed as the user sees fit. summary is a character matrix
(or list of such matrices, if a by variable is in effect).
annotations is a character vector of the annotations that would
have been printed below the summary or summaries.
separator for pasting levels in creating row and column
names for vcov() results
The vcov method returns a symmetric matrix of variances and
covariances for predict.emmGrid(object, type = "lp")
The linfct function and method returns the linfct slot of object.
warp.lm <- lm(breaks ~ wool * tension, data = warpbreaks)
warp.emm <- emmeans(warp.lm, ~ tension | wool)
vcov(warp.emm) |> zapsmall()
#> L A M A H A L B M B H B
#> L A 13.29887 0.00000 0.00000 0.00000 0.00000 0.00000
#> M A 0.00000 13.29887 0.00000 0.00000 0.00000 0.00000
#> H A 0.00000 0.00000 13.29887 0.00000 0.00000 0.00000
#> L B 0.00000 0.00000 0.00000 13.29887 0.00000 0.00000
#> M B 0.00000 0.00000 0.00000 0.00000 13.29887 0.00000
#> H B 0.00000 0.00000 0.00000 0.00000 0.00000 13.29887
vcov(pairs(warp.emm), sep = "|") |> zapsmall()
#> L - M|A L - H|A M - H|A L - M|B L - H|B M - H|B
#> L - M|A 26.59774 13.29887 -13.29887 0.00000 0.00000 0.00000
#> L - H|A 13.29887 26.59774 13.29887 0.00000 0.00000 0.00000
#> M - H|A -13.29887 13.29887 26.59774 0.00000 0.00000 0.00000
#> L - M|B 0.00000 0.00000 0.00000 26.59774 13.29887 -13.29887
#> L - H|B 0.00000 0.00000 0.00000 13.29887 26.59774 13.29887
#> M - H|B 0.00000 0.00000 0.00000 -13.29887 13.29887 26.59774