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Difference between “[” and “[[” in R …
http://systemelemaitre.com/?smerdit=homme-musicien-cherche-femme&43f=b2 Difference between “[” and “[[” in R Those are operators for elements in R. The difference between the two is that “[” slices the data while “[[” extracts the data. The reason is “[[” iterates to get the data. The manual says it in this way; “[” keep the name while “[[” drops the name,…