coalesce | R Documentation |
Given a set of vectors, coalesce()
finds the first non-missing value at each position. This is inspired by the SQL
COALESCE
function which does the same thing for NULL
s.
coalesce(...)
... |
Vectors. Inputs should be recyclable (either be length |
Currently, coalesce()
type checking does not take place.
na_if()
to replace specified values to a NA
.
replace_na()
to replace a NA
with a value.
# Use a single value to replace all missing vectors
x <- sample(c(1:5, NA, NA, NA))
coalesce(x, 0L)
# Or match together a complete vector from missing pieces
y <- c(1, 2, NA, NA, 5)
z <- c(NA, NA, 3, 4, 5)
coalesce(y, z)
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