# NOT RUN {
ctg = catalog("<Path to a folder containing a set of .las files>")
plot(catalog)
# Exemple with a single file
proj4 <- "+proj=utm +zone=17"
LASfile <- system.file("extdata", "Megaplot.laz", package="lidR")
ctg = catalog(LASfile)
plot(ctg, proj4)
# }
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