is_absorbance_based
returns a logical value, TRUE
if its argument is a filter_spct
object that contains spectral absorbance data and FALSE
otherwise,
but returns NA
for any other R object, including those belonging
other generic_spct
-derived classes.
is_absorptance_based
returns a logical value, if its argument
is a filter_spct
object, TRUE
if it contains data as spectral
absorptance and FALSE
otherwise, but returns NA
for any other
R object, including those belonging other generic_spct
-derived
classes.
is_transmittance_based
returns TRUE if its argument is a
filter_spct
object that contains spectral transmittance data and
FALSE if it does not contain such data, but returns NA for any other R
object, including those belonging other generic_spct
-derived
classes.