combine_data_across_cols function

Combine data across columns

Combine data across columns. If NA is the only value across all focal columns for given row(s), NA will be returned for those row(s).

combine_data_across_cols(data = NULL, cols = NULL)

Arguments

• data: a data object (a data frame or a data.table)
• cols: a character vector containing names of columns, across which to combine data

Returns

the output will be a numeric or character vector.

Examples

dt <- data.frame(v1 = c(1, NA), v2 = c(NA, 2))
dt
combine_data_across_cols(data = dt, cols = c("v1", "v2"))
dt <- data.frame(v1 = c(1, 2, NA), v2 = c(NA, 4, 3))
dt
combine_data_across_cols(data = dt, cols = c("v1", "v2"))
dt <- data.frame(v1 = c(1, NA, NA), v2 = c(NA, 2, NA))
dt
combine_data_across_cols(data = dt, cols = c("v1", "v2"))