# NOT RUN {
w1 <- createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9)
cellFromPxcorPycor(world = w1, pxcor = 0, pycor = 9)
cellFromPxcorPycor(world = w1, pxcor = c(0, 1, 2), pycor = 0)
# }
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