reshape - Species Matrix with biomass using "dissimBiom" -


i trying create species matrix 3 column file showing plot id, species (trees in case) , biomass (basal area). have tried 

reshape::cast(dissimbiom, id ~ treesp, value = "absba", fun = mean)

following instructions mentioned in:

how use dissimilarity matrix function metamds?

i receiving error message:

object 'dissimbiom' not found.

can please have assistance understanding message , can done resolve issue? thank you.


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