Extracting reflectance data from SpectraSuite JCAMP files in R
[This article was first published on PlanetFlux, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here)
Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.
I’ve been using an OceanOptics USB4000 spectrometer in research on biomass accumulation and climate in South Africa.Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.
This post presents a R function that will read in JCAMP files from the SpectraSuite software and output a vector of reflectance values. SpectraSuite can convert binary output files to JCAMP files if they weren’t saved as JCAMP.
You can use this to process a folder of spectra and return a data frame with a column for each file as follows:
And here’s another function that will calculate NDVI similar to several satellite products:
You can apply this to the output of spectracompile() like this:
Here’s a few random spectra from various fynbos species:
To leave a comment for the author, please follow the link and comment on their blog: PlanetFlux.
R-bloggers.com offers daily e-mail updates about R news and tutorials about learning R and many other topics. Click here if you're looking to post or find an R/data-science job.
Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.