This function returns the mean, total, or contribution of response for each waveband and a response spectrum.
Usage
e_response(
spct,
w.band,
quantity,
time.unit,
scale.factor,
wb.trim,
use.hinges,
...
)
# Default S3 method
e_response(
spct,
w.band,
quantity,
time.unit,
scale.factor,
wb.trim,
use.hinges,
...
)
# S3 method for class 'response_spct'
e_response(
spct,
w.band = NULL,
quantity = "total",
time.unit = NULL,
scale.factor = 1,
wb.trim = getOption("photobiology.waveband.trim", default = TRUE),
use.hinges = getOption("photobiology.use.hinges", default = NULL),
naming = "default",
...
)
# S3 method for class 'response_mspct'
e_response(
spct,
w.band = NULL,
quantity = "total",
time.unit = NULL,
scale.factor = 1,
wb.trim = getOption("photobiology.waveband.trim", default = TRUE),
use.hinges = getOption("photobiology.use.hinges", default = NULL),
naming = "default",
...,
attr2tb = NULL,
idx = "spct.idx",
.parallel = FALSE,
.paropts = NULL
)
Arguments
- spct
an R object.
- w.band
waveband or list of waveband objects or a numeric vector of length two. The waveband(s) determine the region(s) of the spectrum that are summarized. If a numeric range is supplied a waveband object is constructed on the fly from it.
- quantity
character string One of "total", "average" or "mean", "contribution", "contribution.pc", "relative" or "relative.pc".
- time.unit
character or lubridate::duration object.
- scale.factor
numeric vector of length 1, or length equal to that of
w.band
. Numeric multiplier applied to returned values.- wb.trim
logical if TRUE wavebands crossing spectral data boundaries are trimmed, if FALSE, they are discarded.
- use.hinges
logical Flag indicating whether to insert "hinges" into the spectral data before integration so as to reduce interpolation errors at the boundaries of the wavebands.
- ...
other arguments (possibly used by derived methods).
- naming
character one of "long", "default", "short" or "none". Used to select the type of names to assign to returned value.
- attr2tb
character vector, see
add_attr2tb
for the syntax forattr2tb
passed as is to formal parametercol.names
.- idx
character Name of the column with the names of the members of the collection of spectra.
- .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 named numeric
vector in the case of methods for individual
spectra, with one value for each waveband
passed to parameter
w.band
. A data.frame
in the case of collections of spectra,
containing one column for each waveband
object, an index column with
the names of the spectra, and optionally additional columns with metadata
values retrieved from the attributes of the member spectra.
By default values are only integrated, but depending on the argument passed
to parameter quantity
they can be re-expressed as relative fractions
or percentages. In the case of vector output, names
attribute is set
to the name of the corresponding waveband unless a named list is supplied
in which case the names of the list members are used.
Methods (by class)
e_response(default)
: Default method for generic functione_response(response_spct)
: Method for response spectra.e_response(response_mspct)
: Calculates energy response from aresponse_mspct
Note
The parameter use.hinges
controls speed optimization. The
defaults should be suitable in most cases. Only the range of wavelengths
in the wavebands is used and all BSWFs are ignored.
See also
Other response functions:
q_response()
,
response()
Examples
e_response(ccd.spct, new_waveband(200,300))
#> R[/e]_]range.200.300
#> 0.0001153367
#> attr(,"time.unit")
#> [1] "second"
#> attr(,"radiation.unit")
#> [1] "total energy response"
e_response(photodiode.spct)
#> R[/e]_Total
#> 24.40478
#> attr(,"time.unit")
#> [1] "second"
#> attr(,"radiation.unit")
#> [1] "total energy response"