A dataset containing diffuse reflectance measurements of soil samples from Brazil. The data were obtained using a Cary 5000 UV-Vis-NIR spectrophotometer, covering the spectral range from 2500 nm to 380 nm with a reading interval of 0.5 nm (Frosi et al., 2025).
Format
A data frame with 5,417 rows and 52 columns:
a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20,a21,a22,a23,a24,a26Wavelength values in nanometers for each sample (labeled "a"). Each column represents the wavelength for a specific sample.
x2,x4,x6,x8,x10,x12,x14,x16,x18,x20,x22,x24,x26,x28,x30,x32,x34,x36,x38,x40,x42,x44,x46,x48,x50Reflectance percentage (%R) corresponding to each wavelength for the same sample. The "x" columns represent the reflectance values for the corresponding "a" sample columns.
References
Frosi, G., Inda, A., & Barrón, V. (2025). Diffuse reflectance of soils from Brazil Data set. Zenodo. doi:10.5281/zenodo.14879041