remove_zero()
remove rows/columns that contain zeros.replace_zero()
replaces zeros.
Usage
remove_zero(x, ...)
replace_zero(x, ...)
# S4 method for ANY
remove_zero(x, margin = 1, all = FALSE)
# S4 method for matrix
replace_zero(x, value)
# S4 method for data.frame
replace_zero(x, value)
Arguments
- x
An R object (should be a
matrix
or adata.frame
).- ...
Currently not used.
- margin
A length-one
numeric
vector giving the subscripts which the function will be applied over (1
indicates rows,2
indicates columns).- all
A
logical
scalar. IfTRUE
, only the rows/columns whose values all meet the condition defined byf
are considered. IfFALSE
(the default), only rows/columns where at least one value validates the condition defined byf
are considered.- value
A possible replacement value.
Examples
## Create a data matrix
X <- matrix(sample(1:10, 25, TRUE), nrow = 5, ncol = 5)
## Add zero
k <- sample(1:25, 3, FALSE)
X[k] <- 0
X
#> [,1] [,2] [,3] [,4] [,5]
#> [1,] 2 0 10 9 9
#> [2,] 0 2 9 0 10
#> [3,] 10 7 5 10 9
#> [4,] 1 7 3 7 10
#> [5,] 2 9 9 5 10
## Remove rows with zero
remove_zero(X, margin = 1)
#> [,1] [,2] [,3] [,4] [,5]
#> [1,] 10 7 5 10 9
#> [2,] 1 7 3 7 10
#> [3,] 2 9 9 5 10
## Replace zero
replace_zero(X, value = 1)
#> [,1] [,2] [,3] [,4] [,5]
#> [1,] 2 1 10 9 9
#> [2,] 1 2 9 1 10
#> [3,] 10 7 5 10 9
#> [4,] 1 7 3 7 10
#> [5,] 2 9 9 5 10