Mean plus and minus standard error from collection of spectra
Source:R/mspct.mean.se.band.r
s_mean_se_band.Rd
Method to compute the "parallel" mean and limits based on SEM. The spectral values are summarised across members of a collection of spectra or of a spectral object containing multiple spectra in long form.
Usage
s_mean_se_band(x, na.rm, mult, ...)
# Default S3 method
s_mean_se_band(x, na.rm = FALSE, mult = 1, ...)
# S3 method for class 'generic_spct'
s_mean_se_band(x, na.rm = FALSE, mult = 1, ...)
# S3 method for class 'filter_mspct'
s_mean_se_band(x, na.rm = FALSE, mult = 1, ...)
# S3 method for class 'source_mspct'
s_mean_se_band(x, na.rm = FALSE, mult = 1, ...)
# S3 method for class 'response_mspct'
s_mean_se_band(x, na.rm = FALSE, mult = 1, ...)
# S3 method for class 'reflector_mspct'
s_mean_se_band(x, na.rm = FALSE, mult = 1, ...)
# S3 method for class 'calibration_mspct'
s_mean_se_band(x, na.rm = FALSE, mult = 1, ...)
# S3 method for class 'cps_mspct'
s_mean_se_band(x, na.rm = FALSE, mult = 1, ...)
# S3 method for class 'raw_mspct'
s_mean_se_band(x, na.rm = FALSE, mult = 1, ...)
Value
If x
is a collection spectral of objects, such as a
"filter_mspct"
object, the returned object is of same class as the
members of the collection, such as "filter_spct"
, containing the
summary spectrum, with variables with names tagged for summaries other
than mean or median.
Details
Method specializations compute the mean and limits based on SEM at
each wavelength across a group of spectra stored in an object of one of the
classes defined in package 'photobiology'. Omission of NAs is done
separately at each wavelength. Interpolation is not applied, so all spectra
in x
must share the same set of wavelengths. An error is triggered
if this condition is nor fulfilled. The value passed as argument to `mult`
can be used to estimate a confidence interval for each mean value.
Methods (by class)
s_mean_se_band(default)
:s_mean_se_band(generic_spct)
:s_mean_se_band(filter_mspct)
:s_mean_se_band(source_mspct)
:s_mean_se_band(response_mspct)
:s_mean_se_band(reflector_mspct)
:s_mean_se_band(calibration_mspct)
:s_mean_se_band(cps_mspct)
:s_mean_se_band(raw_mspct)
:
Note
Objects of classes raw_spct
and cps_spct
can contain data
from multiple scans in multiple variables or "columns". The methods accept
as arguments objects of these classes only if spectra contain data for a
single spectrometer scan. In the case of cps_spct
objects, a single
column can also contain data from multiple scans spliced into a single
variable.
Examples
s_mean_se_band(sun_evening.mspct)
#> Object: source_spct [1,593 x 4]
#> Wavelength range 290-1000 nm, step 0.34-0.47 nm
#> Label: Mean and mean +/- SEM of 5 source_spct objects.
#> Variables:
#> w.length: Wavelength [nm]
#> s.e.irrad: Spectral energy irradiance [W m-2 nm-1]
#> --
#> # A tibble: 1,593 × 4
#> w.length s.e.irrad s.e.irrad.se.m s.e.irrad.se.p
#> <dbl> <dbl> <dbl> <dbl>
#> 1 290 0 0 0
#> 2 290. 0 0 0
#> 3 291. 0 0 0
#> 4 291. 0 0 0
#> 5 292. 0 0 0
#> 6 292. 0 0 0
#> 7 293. 0 0 0
#> 8 293. 0 0 0
#> 9 294. 0 0 0
#> 10 294. 0 0 0
#> # ℹ 1,583 more rows