Convert variable from character to numeric
Thanks to Paul Duckman for this. Suppose you have a datafile with a character variable (var) that you want to convert to a numeric variable. While this is not possible, the following code replaces the character variable with a numeric variable of the same name.
1. data datfile (drop = tmp);On line 2, the character variable is renamed. One line 3, a new numeric variable is created, with the same name as the original character variable, and its value is set. On line 1, the temporary variable is deleted.
2. set datfile (rename = (var = tmp));
3. var = input (tmp, best4.);
4. run;
posted by Platypus Bill @ 2:18 pm
7 Comments:
Thank you for this neat code! It is very helpful!
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Unrelated, but yet somehow related to the problem posted.
I have a series of N data files that I am looping through and for N-2 data files variable x is numeric and for the last 2 is character. I need to append all these data and so I attempted to simply convert all x variables in all data files into numeric using the input function. However, for the first N-2 files, x becomes a character variable and for the 2 files it does become numeric! I am going crazy right now.
Even if I set new_x = x; where x is numeric, new_x appears as character. Any help is much appreciated!
Thanks!
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