anthracite_subtype: Determine the subtype of anthracite in accordance with GOST...

In coal-coke/coal.state: Classification, basis recalculation and conventional qualimetry of fossil solid fuels

Description

In accordance with GOST 25543 (Table 10) determine the subtype of anthracite by anisotropy of vitrinite reflectance, [%].

Usage

anthracite_subtype(ar)

Arguments

ar	anisotropy of vitrinite reflectance, [%], calculated in accordance with formula 4 in GOST R 55659. Type: [double].

Value

Identifier of anthracite subtype according to Table 10 of GOST 25543. Type: [character].

Examples

anthracite_subtype(c(0, 29.4, 29.5, 40, 40.509, 80))
# [1] "20" "20" "30" "30" "40" "70"

# build test:
stopifnot(
  all(
    anthracite_subtype(c(0, 29.4, 29.5, 40, 40.509, 80)) ==
    c("20", "20", "30", "30", "40", "70")
  )
)

coal-coke/coal.state documentation built on Feb. 12, 2021, 10:02 a.m.