Photobiological Calculations
Convert absorbance into transmittance
Calculate absorbance from spectral absorbance.
Absorbance
Calculate absorptance from spectral absorptance.
Absorptance
Custom smoothing
Copy attributes from members of a generic_mspct
Convert transmittance into absorptance.
Convert filter quantities.
Convert spectral photon irradiance into spectral energy irradiance
Convert spectral energy irradiance into spectral photon irradiance
Convert spectral energy irradiance into spectral photon irradiance
Coerce to a collection-of-spectra
Coerce to a spectrum
Coerce to a collection-of-spectra
Coerce to a spectrum
Coerce to a collection-of-spectra
Coerce to a spectrum
Coerce to a collection-of-spectra
Coerce or convert into a filter spectrum
Coerce to a collection-of-spectra
Coerce to a spectrum
Coerce a collection of spectra into a matrix
Coerce to a collection-of-spectra
Coerce to a spectrum
Coerce to a collection-of-spectra
Coerce to a spectrum
Coerce to a collection-of-spectra
Coerce to a spectrum
Coerce to a collection-of-spectra
Coerce to a spectrum
Coerce to a collection-of-spectra
Coerce to a solute spectrum
Coerce to a collection-of-spectra
Coerce to a spectrum
Guess whether insertion of hinges is needed or not
Average spectral data.
Honeybee xyz chromaticity colour matching function data
Combine collections of spectra
Spectral weights
Scaled and/or interpolated light-source spectral output
Spectral response of a back-thinned CCD image sensor.
check and rename variables
Check validity of spectral objects
Sanity check a spectrum
Sanity check of wavelengths (internal function).
Check consistency of wavelength step size
Check that the "mspct.version" attribute is set
Check that the "spct.version" attribute is set
Check the "time.unit" attribute of an existing source_spct object
Query which is the class of a spectrum
Clean a spectrum
Clean (=replace) off-range values in a spectrum
Clear the spectral weights cache
Theoretical spectrum of clear and apaque materials
Clip head and/or tail of a spectrum
Form a new collection
Color of an object
Coarse-grained comparison of two spectra
Convert the "Tfr.type" attribute
Convert the "thickness" attribute of an existing filter_spct object.
Convert the "time.unit" attribute of an existing source_spct object
Convolve function for collections of spectra
Copy attributes
Conversion from counts per second to physical quantities
Calculate deuterium lamp output spectrum from fitted constants
Data for typical calibration lamps
Defunct functions and methods
Remove a previously applied normalization
Remove spikes from spectrum
Diffraction
Dimensions of an Object
Divide two spectra, even if the wavelengths values differ
Arithmetic Operators
Drop user columns
Energy fluence
Energy:energy fraction
Energy irradiance
Energy:energy ratio
Energy-based photo-response
Convert energy-based quantities into photon-based quantities.
Calculate energy to quantum (mol) multipliers
Calculate energy to quantum multipliers
Enable or disable checks
Set spectral-data options
Calculate (energy) irradiance from spectral irradiance
Energy:energy ratio
Energy:photon ratio
Expanse
Extract or replace members of a collection of spectra
Extract or replace parts of a spectrum
Math function dispatcher for spectra
Incandescent "FEL" lamp emission spectrum
Counts per second from a measurement of a plastic film
Find local maxima or global maximum (peaks)
Find spikes
Find wavelength values in a spectrum
Find repeated w.length values
Refine position and value of extremes by fitting
Fluence
Compute range and format it
fscale a spectrum
Rescale a spectrum using a summary function
fshift a spectrum
Shift the scale of a spectrum using a summary function
Collection-of-spectra constructor
Get the metadata attributes
Get peaks and valleys from a spectrum
Get the "filter.properties" attribute
Get the "how.measured" attribute
Get the "idfactor" attribute
Get the "instr.desc" attribute
Get the "instr.settings" attribute
Get the "K.type" attribute
Get the "mspct.version" attribute
Get the "multiple.wl" attribute
Query the "normalized" and "normalization" attributes
Get the "scaled" attribute
Get the "solute.properties" attribute
Get the "spct.version" attribute
Get the "time.unit" attribute of an existing source_spct object
Get the "what.measured" attribute
Get the "when.measured" attribute
Get the "where.measured" attribute
Return the First and Last Parts of an Object
Irradiance
Insert wavelength values into spectral data.
Insert new wavelength values into a spectrum
Integrate spectral data.
Gives irradiance from spectral irradiance.
Map a spectrum to new wavelength values.
Calculate spectral values at a different set of wavelengths
Map spectra to new wavelength values.
Irradiance
Photon or energy irradiance from spectral energy or photon irradiance.
Query if a spectrum contains absorbance or transmittance data
Is an R object "effective"
Query if a spectrum contains mole or mass based data
Query whether a generic spectrum has been normalized.
Query if a spectrum contains photon- or energy-based data.
Query whether a generic spectrum has been scaled
Query if a spectrum is tagged
Query class of spectrum objects
Query class of spectrum objects
Query if an object has old class names
Query class of spectrum summary objects
Query if it is a waveband
Check the "instr.desc" attribute
Check the "instr.settings" attribute
Join all spectra in a collection
Solar astronomy using Meeus' algorithm
Insert wavelength values into spectral data.
Find labels from "waveband" object
Green Arabidopsis leaf reflectance and transmittance.
Logarithms and Exponentials
Column or variable labels
Make wavelengths consistent
Miscellaneous Mathematical Functions
Wavelength maximum
Merge and copy attributes
Merge into object_spct
Midpoint
Wavelength minimum
Arithmetic Operators
Arithmetic Operators
Multi-spct transform methods
Names of multi-spectra classes
Handle Missing Values in Objects
Normalization of an R object
Normalize a range argument into a true numeric range
Normalize spectral data
Calculate a normalized difference.
Binary operation on two spectra, even if the wavelengths values differ
Peaks or local maxima
Molar spectral attenuation coefficient of phenylalanine
photobiology: Photobiological Calculations
Spectral response of a GaAsP photodiode
Photon irradiance
Photo:photon ratio
Photon:energy ratio
Arithmetic Operators
Arithmetic Operators
Print spectral objects
Print methods for metadata records
Print spectral summary
Print a "waveband" object
Multiply two spectra, even if the wavelengths values differ
Random sample of spectra
Photon fluence
Photon:photon fraction
Photon irradiance
Photon:photon ratio
Photon-based photo-response
Convert photon-based quantities into energy-based quantities
Photon:energy ratio
Packages in R for Photobiology suite
Internal utility range-check functions
Wavelength range
Row-bind spectra
Calculate reflectance from spectral reflectance
Reflectance
Replace bad pixels in a spectrum
Calculate response from spectral response
Integrated response
reflectance:reflectance fraction
Reflectance at a planar boundary
reflectance:reflectance normalised difference
reflectance:reflectance ratio
RGB color values
Remove "generic_mspct" and derived class attributes.
Remove "generic_spct" and derived class attributes.
Rounding of Numbers
rowwise functions for collections of spectra
Spectral irradiance to rgb color conversion
Mean plus and minus standard error from collection of spectra
Mean and standard error from collection of spectra
Mean from collection of spectra
Median of a collection of spectra
Product from collection of spectra
Quantiles of a collection of spectra
Range of a collection of spectra
Standard Deviation of a collection of spectra
Standard Error of a collection of spectra
Sum from collection of spectra
Variance of a collection of spectra
Standard error of the mean
Standard error of the mean
Standard error of the mean
Merge user supplied attribute names with default ones
The "bswf.used" attribute
Set the "filter.properties" attribute
Convert an R object into a spectrum object.
Set the "how.measured" attribute
Set the "idfactor" attribute
Set the "instr.desc" attribute
Set the "instr.settings" attribute
Set the "K.type" attribute
Set the "multiple.wl" attribute
Set the "normalized" and "normalization" attributes
Set the "response.type" attribute
The "Rfr.type" attribute
Set the "scaled" attribute
Set the "solute.properties" attribute
The "Tfr.type" attribute
Set the "time.unit" attribute of an existing source_spct object
Set the "what.measured" attribute
Set the "when.measured" attribute
Set the "where.measured" attribute
Classes common to all collection members.
Sign
sinc
Arithmetic Operators
Smooth a spectrum
Spectral-object constructors
Copy attributes into a tibble
Function returning a vector containing the names of spectra classes.
Access metadata
Convert spectrum from wide to long form
Spikes
List-of-wavebands constructor
Energy irradiance for split spectrum regions
Energy or photon irradiance for split spectrum regions
Photon irradiance for split spectrum regions
Convert a 'wide' or untidy data frame into a collection of spectra
Stepsize
Subset the metadata attributes
Subsetting spectra
Convert 'long' or tidy spectral data into a collection of spectra
Subtract two spectra
Add two spectra
Function that returns a vector containing the names of spectral summar...
Summary of one or more spectra
Daily solar spectral irradiance (simulated)
Time series of solar spectral irradiance (measured)
Solar spectral irradiance (simulated)
Convert transmittance into absorbance.
Convert transmittance into absorptance.
Tag a spectrum
transmittance:transmittance fraction
transmittance:transmittance normalised difference
transmittance:transmittance ratio
Thin the density of wavelength values
Arithmetic Operators
Calculate transmittance from spectral transmittance.
Transmittance
Trigonometric Functions
Trim (or expand) head and/or tail of a spectrum
Trim (or expand) head and/or tail
Trim (or expand) head and/or tail
Trim head and/or tail of a spectrum
Trim the "instr.desc" attribute
Trim the "instr.settings" attribute
Transmittance spectrum of plastic films
Compute two irrads for ratio, fraction or normalised difference
Compute two reflectances for ratio, fraction or normalised difference
Spectral response of two light sensors.
Compute two transmittances for ratio, fraction or normalised differenc...
Extract all members from a collection
Remove tags
Upgrade one spectral object
Upgrade one or more spectral objects
Use photobiology options
Insert spectral data values at new wavelength values.
Overwrite spectral data values at existing wavelength values.
Valleys or local minima
Set error reporting options
Wavelength range to rgb color conversion
Wavelength to rgb color conversion
Molar spectral attenuation coefficient of water
Photon or energy ratio
Waveband constructor method
Set computation options
Create tagged spectrum from wavebands
Create spectrum from wavebands
Create tagged spectrum from wavebands
White led bulb spectrum
Wavelength conversions
Find wavelengths values corresponding to a target spectral value
Definitions of classes, methods, operators and functions for use in photobiology and radiation meteorology and climatology. Calculation of effective (weighted) and not-weighted irradiances/doses, fluence rates, transmittance, reflectance, absorptance, absorbance and diverse ratios and other derived quantities from spectral data. Local maxima and minima: peaks, valleys and spikes. Conversion between energy-and photon-based units. Wavelength interpolation. Colours and vision. This package is part of the 'r4photobiology' suite, Aphalo, P. J. (2015) <doi:10.19232/uv4pb.2015.1.14>.
Useful links