Expressions can be written in a natural way such as
count_vals_byname(m, "<=", 1)
.
Usage
count_vals_byname(
a,
compare_fun = c("==", "!=", "<", "<=", ">=", ">"),
val = 0
)
Arguments
- a
A matrix or list of matrices whose values are to be counted according to
compare_fun
.- compare_fun
The comparison function, one of "==", "!=", "<", "<=", ">", or ">=". Default is "==".
- val
The value against which matrix entries are compared. Default is
0
.
Details
Either a single matrix or a list of matrices can be given as the a
argument.
compare_fun
can be specified as a string ("!=")
or as a back-quoted function (`!=`
).
Examples
m <- matrix(c(0, 1, 2, 3, 4, 0), nrow = 3, ncol = 2)
count_vals_byname(m) # uses defaults: compare_fun = "==" and val = 0
#> [1] 2
count_vals_byname(m, compare_fun = "!=")
#> [1] 4
count_vals_byname(m, compare_fun = `!=`)
#> [1] 4
# Write expressions in a natural way
count_vals_byname(m, "<=", 1)
#> [1] 3
# Also works for lists
count_vals_byname(list(m,m), "<=", 1)
#> [[1]]
#> [1] 3
#>
#> [[2]]
#> [1] 3
#>