View source: R/combine_data_across_cols.R
combine_data_across_cols | R Documentation |
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)
data |
a data object (a data frame or a data.table) |
cols |
a character vector containing names of columns, across which to combine data |
the output will be a numeric or character vector.
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"))
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