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📜 R数据类型
📅 最后修改于: 2021-01-08 09:24:47 🧑 作者: Mango
R编程中的数据类型
在编程语言中，我们需要使用各种变量来存储各种信息。变量是用于存储值的保留内存位置。在程序中创建变量时，内存中会保留一些空间。
在R中，有几种数据类型，例如整数，字符串等。操作系统根据变量的数据类型分配内存，并确定可以在保留的内存中存储什么。
R编程中使用以下数据类型：
| Data type | Example | Description |
|---|---|---|
| Logical | True, False | It is a special data type for data with only two possible values which can be construed as true/false. |
| Numeric | 12,32,112,5432 | Decimal value is called numeric in R, and it is the default computational data type. |
| Integer | 3L, 66L, 2346L | Here, L tells R to store the value as an integer, |
| Complex | Z=1+2i, t=7+3i | A complex value in R is defined as the pure imaginary value i. |
| Character | ‘a’, ‘”good'”, “TRUE”, ‘35.4’ | In R programming, a character is used to represent string values. We convert objects into character values with the help ofas.character() function. |
| Raw | A raw data type is used to holds raw bytes. |
让我们看一个示例，以更好地理解数据类型：
#Logical Data type
variable_logical<- TRUE
cat(variable_logical,"\n")
cat("The data type of variable_logical is ",class(variable_logical),"\n\n")
#Numeric Data type
variable_numeric<- 3532
cat(variable_numeric,"\n")
cat("The data type of variable_numeric is ",class(variable_numeric),"\n\n")
#Integer Data type
variable_integer<- 133L
cat(variable_integer,"\n")
cat("The data type of variable_integer is ",class(variable_integer),"\n\n")
#Complex Data type
variable_complex<- 3+2i
cat(variable_complex,"\n")
cat("The data type of variable_complex is ",class(variable_complex),"\n\n")
#Character Data type
variable_char<- "Learning r programming"
cat(variable_char,"\n")
cat("The data type of variable_char is ",class(variable_char),"\n\n")
#Raw Data type
variable_raw<- charToRaw("Learning r programming")
cat(variable_raw,"\n")
cat("The data type of variable_char is ",class(variable_raw),"\n\n")
当我们执行以下程序时，它将提供以下输出：
