how to solve"invalid 'type' (character) of argument"
时间: 2023-12-10 14:37:20 浏览: 70
The error message "invalid 'type' (character) of argument" usually happens when you are trying to pass a character data type argument to a function that only accepts numeric or other specific data types.
To solve this error, you need to check the data type of the argument you are passing to the function and make sure it matches the expected data type. If the argument is a character data type, you can try converting it to a numeric data type using the as.numeric() function.
For example, if you have a function that only accepts numeric arguments and you want to pass a character argument, you could do something like this:
```
# Define a function that only accepts numeric arguments
my_function <- function(x) {
# Function code goes here
}
# Pass a character argument to the function (which will produce an error)
my_function("abc")
# Convert the character argument to a numeric data type using as.numeric()
my_function(as.numeric("123"))
```
In the example above, the first call to my_function() with a character argument will produce the "invalid 'type' (character) of argument" error. However, the second call to my_function() with a numeric argument (after converting the character argument using as.numeric()) should work correctly.