excitation_spectrum: Extraction of 2D excitation spectrum, given any emission...
In guilayn/lbe3df: 3D Fluorescence spectra processing

Extraction of 2D excitation spectrum, given any emission wavelenght.

excitation_spectrum(select_emission = 254, data_list = data_interpol,
  excitation_range = data_interpol$y, area_under_graph = F,
  start_exci = 200, end_exci = 400, export_pdf = T, export_png = F,
  directory = directory_processing, sample_name_ = sample_name)

`select_emission`	Selected emission wavelenght in nm. An excitation spectrum will be generated for this specific emission. Default is 350 for exampling purposes.
`data_list`	The default value of "data_interpol" is assuming that "LBE_fluo3D_processing" have just been used. Otherwise a list containing x=vector of emission wavelenghts, y=vector of excitation wavelenghts, z= a matrix containing the z values (intensity) where X must be the lines, Y must be the columns and Z must be the values of the table.
`excitation_range`	The default value of "data_interpol$y" is assuming that "LBE_fluo3D_processing" have just been used. Otherwise it must be a vector containing the excitation wavelenghts range.
`area_under_graph`	TRUE or FALSE. If any calculation of area under curve will be performed.
`start_exci`	Excitation start if area_under_graph is TRUE.
`end_exci`	Excitation end if area_under_graph is TRUE.
`export_pdf`	TRUE or FALSE.
`export_png`	TRUE or FALSE.
`directory`	Default is the working directory. Better not change it.
`sample_name_`	Default is the output from processing function. Better not change it.

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setwd(XXXX) #XXX is your directory contaning the .sp files (copy and paste from the brownse and replace all the "\" by "/").
LBE_fluo3D_processing() #include your options if you want.
excitation_spectrum(420) #export pdf of a excitation spectrum plot at emission = 420 nm