80 lines
2.0 KiB
R
80 lines
2.0 KiB
R
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# Vectors
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# -------
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# Creating a numeric vector
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numeric_vector <- c(1, 2, 3, 4, 5)
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print("Numeric Vector:")
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print(numeric_vector)
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# Creating a character vector
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character_vector <- c("apple", "banana", "cherry")
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print("Character Vector:")
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print(character_vector)
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# Accessing elements in a vector
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print("Element at index 2 of Numeric Vector:")
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print(numeric_vector[2])
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# Modifying elements in a vector
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numeric_vector[2] <- 10
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print("Modified Numeric Vector:")
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print(numeric_vector)
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# Lists
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# -----
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# Creating a simple list
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simple_list <- list(name="John", age=25, scores=c(88, 92, 85))
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print("Simple List:")
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print(simple_list)
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# Accessing elements in a list by name
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print("Name from List:")
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print(simple_list$name)
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# Accessing elements in a list by index
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print("Scores from List:")
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print(simple_list[[3]])
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# Modifying elements in a list
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simple_list$age <- 26
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print("Modified List:")
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print(simple_list)
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# Differences between Lists and Vectors
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# -------------------------------------
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# Lists can contain elements of different types
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mixed_list <- list(number=42, text="hello", vector=c(1, 2, 3))
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print("Mixed Type List:")
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print(mixed_list)
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# Vectors must have elements of the same type
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# Attempting to mix types will coerce to the most flexible type
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mixed_vector <- c(1, "two", TRUE)
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print("Mixed Type Vector (coerced):")
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print(mixed_vector)
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# Matrices
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# --------
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# Creating a matrix
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matrix_example <- matrix(1:9, nrow = 3, ncol = 3)
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print("Matrix Example:")
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print(matrix_example)
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# Accessing elements in a matrix
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print("Element at row 2, column 3:")
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print(matrix_example[2, 3])
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# Modifying elements in a matrix
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matrix_example[1, 2] <- 10
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print("Modified Matrix:")
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print(matrix_example)
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# Creating a matrix with named columns
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named_matrix <- matrix(1:9, nrow = 3, ncol = 3, dimnames = list(NULL, c("col1", "col2", "col3")))
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print("Matrix with Named Columns:")
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print(named_matrix)
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# Accessing elements in a matrix with named columns using $ indexing
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print("Element in 'col2':")
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print(named_matrix[, "col2"])
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