R Exercises - Spectroscopic data

Download data files

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• Load the readxl and tidyverse libraries.
• Load FTIR_rocks.xlsx into a data.frame (in fact, tibble).
• Rename the columns with simpler names, such as w, r1, r2 and r3
• Find the wavenumber value of the maximum of each spectrum
• Create a function norm01() that, given a vector, returns the vector normalized to [0,1]
• Normalize all columns of FTIR intensity to [0,1]
• Using base graphics or ggplot2, as you wish, try to reproduce the following graphs: