Description Usage Arguments Value Examples
In accordance with GOST 25543 (Table 3) determine the class of fossil fuel (brown, or hard coal, or anthracite) by its reflectance of vitrinite.
1 | fuel_class(r)
|
r |
reflectance of vitrinite, [%], measured in accordance with
ISO 7404-5.
Type: [ |
Identifier of fossil fuel class according to Table 3 of
GOST 25543.
Type: [character
].
1 2 3 4 5 6 7 8 9 10 | fuel_class(c(0.20, 0.52, 1.3, 4.99, 4.998))
# [1] "02" "05" "13" "49" "50"
# building test:
stopifnot(
all(
fuel_class(c(0.20, 0.52, 1.3, 4.99, 4.998)) ==
c("02", "05", "13", "49", "50")
)
)
|
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