COMPUTER SCIENCE AND ENGINEERING
DATA STRUCTURES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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$
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[[
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[
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None of the above
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Detailed explanation-1: -Such an error is produced by the R compiler when we try to get an element of an atomic vector by using the $ operator. An atomic vector is simply a 1-dimensional object containing data created with the help of c() and vector() functions. R doesn’t allow us to access elements of an atomic vector using the $ symbol.
Detailed explanation-2: -R has six basic (’atomic’) vector types: logical, integer, real, complex, string (or character) and raw.
Detailed explanation-3: -Vectors are the most basic R data objects and there are six types of atomic vectors. They are logical, integer, double, complex, character and raw.
Detailed explanation-4: -vector : An atomic vector is either logical, integer, numeric, complex, character or raw and can have any attributes except a dimension attribute (like matrices). I.e., a factor is an atomic vector, but a matrix or NULL are not. In short, this is basically equivalent to is. atomic(x) && !is.