assert_has_cols
Does the input have rows/columns?
Checks to see if the input has rows/columns.
Usage
assert_has_cols(x, severity = getOption("assertive.severity", "stop"))
assert_has_rows(x, severity = getOption("assertive.severity", "stop"))
has_cols(x, .xname = get_name_in_parent(x))
has_rows(x, .xname = get_name_in_parent(x))Arguments
- x
- Input to check.
- severity
- How severe should the consequences of the assertion be?
Either
"stop","warning","message", or"none". - .xname
- Not intended to be used directly.
Value
has_rows and has_cols return TRUE if
nrow and ncol respectively return a value that is
non-null and positive. The assert_* functions return nothing
but throw an error if the corresponding has_* function returns
FALSE.
See Also
ncol.
Examples
library(assertive.properties)
assert_has_rows(data.frame(x = 1:10))
assert_has_cols(matrix())
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