Problem running makeMICeDefsHierachical() function

[mirpie]

Hello!

I'm trying to run the makeMICeDefsHierachical() function as follows:

abijson <- "allen_hierarchy_10.json"
defs <- "DSURQE_40micron_R_mapping.csv"
#Add volumes to anatomical hierarchy
hdefs <- makeMICeDefsHierachical(defs, abijson) #Anatomical Hierarchy

...with the appropriate working directory containing the json and mapping csv files. When I try to run the function as follows:

hdefs <- makeMICeDefsHierachical(defs, abijson)

I get the following error:

Error in FindNode(tree, defs$ABI[i])$Get("path") : attempt to apply non-function

Googling this particular error doesn't seem to return any results. Any insight into where I might be going wrong would be appreciated!

Thanks so much in advance