# NOT RUN {
# Loading example data
data(australia)
spectra(australia) <- sr_no ~ ... ~ 350:2500
# Modifying spectra
m <- mutate(australia, nir = log1p(1/nir))
plot(m)
# Modifying and creating attributes
m <- mutate(australia, sqrt_carbon = sqrt(carbon), foo = clay + ph, nir = log1p(1/nir))
plot(m)
# }
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