firstNA: Position of first NA
In truecluster/bit: Classes and Methods for Fast Memory-Efficient Boolean Selections
firstNA R Documentation
Position of first NA
Description
This is substantially faster than which.max(is.na(x))
Usage
firstNA(x)
Arguments
x
an R vector
Value
a reversed vector
See Also
which.max, is.na, anyNA, anyDuplicated, bit_anyDuplicated
Examples
x <- c(FALSE,NA,TRUE)
firstNA(x)
reverse_vector(x)
## Not run:
x <- 1:1e7
system.time(rev(x))
system.time(reverse_vector(x))
## End(Not run)
truecluster/bit documentation built on Nov. 20, 2022, 2:34 a.m.
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| firstNA | R Documentation |
Position of first NA
Description
This is substantially faster than which.max(is.na(x))
Usage
firstNA(x)
Arguments
x |
an R vector |
Value
a reversed vector
See Also
which.max, is.na, anyNA, anyDuplicated, bit_anyDuplicated
Examples
x <- c(FALSE,NA,TRUE) firstNA(x) reverse_vector(x) ## Not run: x <- 1:1e7 system.time(rev(x)) system.time(reverse_vector(x)) ## End(Not run)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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