A dataset containing the sample metadata.
A data.frame with 20 rows (samples) and 4 columns (sample identifier, location, block, and crop/flora):
Sample identifier (matches column headers in edata)
Location from which a sample was taken - 2 levels (M, W)
Field block from which a sample was taken - 5 levels (1, 2, 3, 4, 5)
Crop/flora type of given sample - 2 levels (C, S)