How can R convert characters to numbers?

In R language, you can use the gsub() function to replace characters with numbers. The gsub() function is used to globally replace specified characters in a string.

Here is an example code:

# 创建一个字符向量
x <- c("one", "two", "three")

# 使用gsub()函数将字符替换为数字
x <- gsub("one", "1", x)
x <- gsub("two", "2", x)
x <- gsub("three", "3", x)

# 输出结果
print(x)

The output result is:

[1] "1" "2" "3"

In the example above, we first created a character vector x containing the strings “one”, “two”, and “three”. Then, by using the gsub() function, we replaced “one” with “1”, “two” with “2”, and “three” with “3”. Finally, we printed the output.

Please note that the gsub() function is case-sensitive. If you need to replace multiple characters, you can call the gsub() function multiple times.