Functions that convert or add related physical quantities to
filter_spct or object_spct objects. transmittance (fraction)
into absorptance (fraction).
Usage
any2T(x, action = "add", clean = FALSE)
any2A(x, action = "add", clean = FALSE)
any2Afr(x, action = "add", clean = FALSE)Value
A copy of x with the columns for the different quantities
added or replaced. If action = "replace", in all cases, the
additional columns are removed, even if no column needs to be added.
Details
These functions are dispatchers for A2T,
Afr2T, T2A, and T2Afr. The
dispatch is based on the names of the variables stored in x. They
do not support in-place modification of x.
See also
Other quantity conversion functions:
A2T(),
Afr2T(),
T2A(),
T2Afr(),
as_quantum(),
e2q(),
e2qmol_multipliers(),
e2quantum_multipliers(),
q2e()
Examples
any2Afr(Ler_leaf.spct)
#> Object: object_spct [2,401 x 4]
#> Wavelength range 250-850 nm, step 0.25 nm
#> Label: Ler_06_black.spct
#> Measured on 2017-07-03 13:17:09.548817 UTC
#> Variables:
#> w.length: Wavelength [nm]
#> Tfr: Total spectral transmittance [/1]
#> Rfr: Total spectral reflectance [/1]
#> Afr: Spectral absorptance [/1]
#> --
#> # A tibble: 2,401 × 4
#> w.length Tfr Rfr Afr
#> <dbl> <dbl> <dbl> <dbl>
#> 1 250 0 0.0467 0.953
#> 2 250. 0 0.0467 0.953
#> 3 250. 0 0.0467 0.953
#> 4 251. 0 0.0467 0.953
#> 5 251 0 0.0467 0.953
#> 6 251. 0 0.0467 0.953
#> 7 252. 0 0.0467 0.953
#> 8 252. 0 0.0467 0.953
#> 9 252 0 0.0467 0.953
#> 10 252. 0 0.0467 0.953
#> # ℹ 2,391 more rows
any2T(Ler_leaf.spct)
#> Warning: 'A2T()' not implemented for class "object_spct".
#> Object: object_spct [2,401 x 3]
#> Wavelength range 250-850 nm, step 0.25 nm
#> Label: Ler_06_black.spct
#> Measured on 2017-07-03 13:17:09.548817 UTC
#> Variables:
#> w.length: Wavelength [nm]
#> Tfr: Total spectral transmittance [/1]
#> Rfr: Total spectral reflectance [/1]
#> --
#> # A tibble: 2,401 × 3
#> w.length Tfr Rfr
#> <dbl> <dbl> <dbl>
#> 1 250 0 0.0467
#> 2 250. 0 0.0467
#> 3 250. 0 0.0467
#> 4 251. 0 0.0467
#> 5 251 0 0.0467
#> 6 251. 0 0.0467
#> 7 252. 0 0.0467
#> 8 252. 0 0.0467
#> 9 252 0 0.0467
#> 10 252. 0 0.0467
#> # ℹ 2,391 more rows
any2T(polyester.spct)
#> Object: filter_spct [454 x 2]
#> Wavelength range 240-800 nm, step 1-4 nm
#> Label: Polyester, clear film, 0.000125 m thick, Autostat CT5 from McDermit Autotype; new
#> Rfr (/1): 0.074, thickness (mm): 0.125, attenuation mode: absorption.
#> Variables:
#> w.length: Wavelength [nm]
#> Tfr: Total spectral transmittance [/1]
#> --
#> # A tibble: 454 × 2
#> w.length Tfr
#> <int> <dbl>
#> 1 240 0.00482
#> 2 241 0.00464
#> 3 242 0.00446
#> 4 244 0.00414
#> 5 246 0.004
#> 6 248 0.004
#> 7 252 0.00386
#> 8 256 0.00329
#> 9 258 0.003
#> 10 259 0.003
#> # ℹ 444 more rows