Near Infrared Spectra of Diesel Fuels

These data consist of NIR spectra of diesel fuels along with various properties of those fules including:

• bp50 - boiling point at 50% recovery, deg C (ASTM D 86)
• CN - cetane Number (like Octane number only for diesel, ASTM D 613)
• d4052 - density, g/mL, @ 15 deg C, (ASTM D 4052)
• freeze - freezing temperature of the fuel, deg C
• total - total aromatics, mass% (ASTM D 5186)
• visc - viscosity, cSt, @ 40 deg C

The file "SWRI_Diesel_NIR.zip" contains a .mat file which can be loaded into MATLAB. This .mat file contains two dataset objects: One includes all the raw unpreprocessed spectra (diesel_spec) and another that is all the properties (diesel_prop). Some of the properties are not measured on some of the samples, so diesel_prop has some missing values (NaNs) in it. The wavelength axis is included as axisscale in the diesel_spec. If you don't have PLS_Toolbox or our freeware for the DataSet Object, these two variables should turn into structures when you load them into MATLAB.