photobiology (version 0.10.6)

T2A: Convert transmittance into absorbance.

Description

Function that converts transmittance (fraction) into absorbance (a.u.).

Usage

T2A(x, action, byref, clean, ...)
# S3 method for default
T2A(x, action = NULL, byref = FALSE, ...)
# S3 method for numeric
T2A(x, action = NULL, byref = FALSE, clean = TRUE, ...)
# S3 method for filter_spct
T2A(x, action = "add", byref = FALSE, clean = TRUE, ...)
# S3 method for filter_mspct
T2A(
  x,
  action = "add",
  byref = FALSE,
  clean = TRUE,
  ...,
  .parallel = FALSE,
  .paropts = NULL
)

Arguments

x

an R object

action

character Allowed values "replace" and "add"

byref

logical indicating if new object will be created by reference or by copy of x

clean

logical replace off-boundary values before conversion

...

not used in current version

.parallel

if TRUE, apply function in parallel, using parallel backend provided by foreach

.paropts

a list of additional options passed into the foreach function when parallel computation is enabled. This is important if (for example) your code relies on external data or packages: use the .export and .packages arguments to supply them so that all cluster nodes have the correct environment set up for computing.

Value

A copy of x with a column A added and other columns possibly deleted except for w.length. If action = "replace", in all cases, the additional columns are removed, even if no column needs to be added.

Methods (by class)

• default: Default method for generic function

• numeric: Method for numeric vectors

• filter_spct: Method for filter spectra

• filter_mspct: Method for collections of filter spectra

See Also

Other quantity conversion functions: A2T(), Afr2T(), T2Afr(), any2T(), as_quantum(), e2qmol_multipliers(), e2quantum_multipliers(), e2q(), q2e()