# \donttest{
file_QSM=system.file("extdata","Tree_1_TreeQSM.txt",package = "aRchi")
file_pc=system.file("extdata","Tree_1_point_cloud.las",package = "aRchi")
QSM=read_QSM(file_QSM,model="treeQSM")
pc=lidR::readLAS(file_pc)
# Make an object of class aRchi
Tree1_aRchi=build_aRchi(QSM=QSM,point_cloud=pc)
# }
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