Calculates the amount of primary products needed per unit of secondary (and tertiary) product, accounting for processing chains and co-product allocation. This function traces back from secondary/tertiary products through processing stages to the original primary crop inputs.
Arguments
- gdx
GDX file
- file
a file name the output should be written to using write.magpie
- level
Level of regional aggregation; "reg" (regional), "glo" (global), "regglo" (regional and global) or any other aggregation level defined in gdxAggregate
- allocation
Method for allocating primary product use when co-products are produced. Options: "mass" (default): Allocation based on dry matter content of outputs "value": Allocation based on economic value of outputs "none": No allocation - full primary input attributed to each output (sum of allocations > 100 percent when co-products exist)
Value
MAgPIE object containing the amount of primary product needed per unit of secondary product (tDM/tDM)