agents is non empty, report
NLany(agents) # S4 method for matrix NLany(agents)
TRUE if there is at least one patch or one turtle in the
Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.
# Patches w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4) p1 <- noPatches() p2 <- patch(w1, 0, 0) NLany(p1)#>  FALSENLany(p2)#>  TRUE#>  TRUENLany(t2)#>  FALSE