Hi,
I'm running R 3.2.1 and im having an unexpected problem... when I run the
follwing code it returns an error
library(stringr)
str_extract("+proj=utm +zone=19 +datum=WGS84 +units=m +no_defs +ellps=WGS84
+towgs84=0,0,0", "+proj=[a-zA-Z0-9]*")
But I can't find whats wrong with my code.
Thanks
Mauricio
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