Remove Empty Rows/Columns

Removes empty rows/columns in an array-like object.

Usage

compact(x, ...)

compact_cols(x, ...)

compact_rows(x, ...)

# S4 method for class 'ANY'
compact(x, margin = 1, na.rm = FALSE, verbose = getOption("arkhe.verbose"))

# S4 method for class 'ANY'
compact_cols(x, na.rm = FALSE, verbose = getOption("arkhe.verbose"))

# S4 method for class 'ANY'
compact_rows(x, na.rm = FALSE, verbose = getOption("arkhe.verbose"))

Arguments

x

An R object (should be a matrix or a data.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).

na.rm

A logical scalar: should NA values be stripped before the computation proceeds?

verbose

A logical scalar: should R report extra information on progress?

Details

A row/column is empty if it contains only zeros (if of type numeric) or zero length character strings (if of type character).

See also

Other data preparation tools: append_column(), append_rownames(), assign(), count(), detect(), discard(), get(), keep(), seek()

Author

N. Frerebeau

Examples

## Create a data.frame
X <- data.frame(A = 0, B = 1:5, C = 6, D = "", F = letters[1:5])
X
#>   A B C D F
#> 1 0 1 6   a
#> 2 0 2 6   b
#> 3 0 3 6   c
#> 4 0 4 6   d
#> 5 0 5 6   e

## Remove empty columns
compact(X, margin = 2)
#>   B C F
#> 1 1 6 a
#> 2 2 6 b
#> 3 3 6 c
#> 4 4 6 d
#> 5 5 6 e