Turn zeros to missing values

Converts zero values to NA. Useful when zero represents an invalid measurement or when a logarithmic scale is desired.

Usage

zerona(x)

Arguments

x

A data frame, matrix, or vector containing zeros.

Value

An object of the same class with zeros replaced by NA.

Author

Chun-Sheng Liang <chun-shengliang@qq.com>

Examples

zerona(0:5)
#> [1] NA  1  2  3  4  5
zerona(cbind(a = 0:5, b = c(6:10, 0)))
#>       a  b
#> [1,] NA  6
#> [2,]  1  7
#> [3,]  2  8
#> [4,]  3  9
#> [5,]  4 10
#> [6,]  5 NA