Description Usage Arguments Value Author(s) See Also
View source: R/build.hull.list.R
Construct a stacked list of values from a data frame containing multiple prey types. Used for creating input to convhulln.
1 |
frame |
A data frame containing a list of isotope values for multiple organisms. If there are d isotope values and s organisms, then the frame is assumed to contain ds columns, where for any 1 ≤q i ≤q s-1 the columns di to d(i+1)-1 contain the isotope measurements for the ith organism. For each organism, the isotopes (columns) must be in the same order. |
A m \times d matrix, where m is the total number of isotopic measurements (over all organisms) and d is the number of isotopes.
Robert Robere
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