Note_Tech

All technological notes.

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R - Vector

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• R - Vector
  • Vector
    • Create Vector

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Vector

• vector:

  • a sequence of elements which share the same data type
  • supports logical, integer, double, character, complex, or raw data type.

• components of the vector:

  • The elements contained in vector

• Function to check the type of vector:

  • typeof()

• Classifications:

  • Atomic vectors: all the elements are of the same type
    • Numeric vector: contains numeric elements
    • Integer vector: contains integer elements
    • Character vector: contains character elements
    • Logical vector: contains Boolean values
  • Lists: the elements are of different data types.

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Create Vector

• In R, the last index is inclusive.

# c() function
x<-c(10.1, 10.2, 33.2)
# 10.1 10.2 33.2
class(x)
# "numeric"

x<-c("shubham","arpita","nishka","vaishali")
class(x)
# "character"

# colon(:) operator
x<-1:10
#  1  2  3  4  5  6  7  8  9 10
x<-10:1
# 10  9  8  7  6  5  4  3  2  1


# seq() function
x<-seq(1,4,by=0.5)
# 1.0 1.5 2.0 2.5 3.0 3.5 4.0
class(x)  # "numeric"

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