R: Converting from string to double -

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I am trying to convert from string to r in two. However, every time I change numbers, R creates integers.

For example: 

  a = "100.11" a = as.double (a)

and output 100 . How do I maintain a decimal when changing from string to numeric? I have set the option (number = 3) .

thanks

Mike

The problem is that Option that is selected: 

  option (number = 3) as.double ("100.11") # [1] 100 points (number = 5) as.double ("100.11") # [ 1] 100.11

digit "Number prints the number of digits to print when printing numbers" values. You set options to 3 and 3 points are shown.


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