webchem (version 0.4.0)

extr_num: Extract a number from a string

Description

Extract a number from a string

Usage

extr_num(x)

Arguments

x

character; input string

Value

a numeric vector

Examples

# NOT RUN {
extr_num('aaaa -95')
extr_num("Melting Pt : -44.6 deg C")
# }