BUILDING A SPECTRAL LIBRARY: Guidelines for Malaysian Materials offers vital recommendations for researchers working with hyperspectral and spectroscopic technologies. The book categorizes Malaysian materials—ranging from plants and soil to minerals, rocks, water, and man-made items—while providing a roadmap for creating an online spectral library. It addresses common challenges such as incomplete metadata, inconsistent data presentation, and the lack of standardization by introducing a flexible data model and offering detailed guidance on library design, metadata identification, format design, and more. This comprehensive guide is designed to be the go-to resource for Malaysian researchers, fostering data sharing and collaboration within the scientific community.