riskyr (version 0.1.0)

is_perc: Verify that input is a percentage (numeric value from 0 to 100).

Description

is_perc is a function that checks whether its single argument perc is a percentage (proportion, i.e., a numeric value in the range from 0 to 100).

Usage

is_perc(perc)

Arguments

perc

A single (typically numeric) argument.

Value

A Boolean value: TRUE if perc is a percentage (proportion), otherwise FALSE.

See Also

num contains basic numeric variables; init_num initializes basic numeric variables; prob contains current probability information; comp_prob computes current probability information; freq contains current frequency information; comp_freq computes current frequency information; is_valid_prob_set verifies the validity of probability inputs; as_pc displays a probability as a percentage; as_pb displays a percentage as probability

Other verification functions: is_complement, is_extreme_prob_set, is_freq, is_prob, is_suff_prob_set, is_valid_prob_pair, is_valid_prob_set, is_valid_prob_triple

Examples

# NOT RUN {
# ways to succeed:
is_perc(2)           # => TRUE, but does NOT return the percentage 2.
is_perc(1/2)         # => TRUE, but does NOT return the percentage 0.5.
pc.sq <- seq(0, 100, by = 10)
is_perc(pc.sq)       # => TRUE (for vector)

# ways to fail:
is_perc(NA)          # => FALSE + warning (NA values)
is_perc(NaN)         # => FALSE + warning (NaN values)
is_perc("Bernoulli") # => FALSE + warning (non-numeric values)
is_perc(101)         # => FALSE + warning (beyond range)

# }