Assigns characters in your input data to represent special missing
values for numeric data.
Valid: |
anywhere
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Category: |
Information
|
-
character
-
is the value in your input data that represents
a special missing value.
Range: |
Special missing values
can be any of the 26 letters of the alphabet (uppercase or lowercase) or the
underscore (_). |
Tip: |
You can specify more than
one character. |
The MISSING statement usually appears
within a DATA step, but it is global in scope.
The MISSING= system option
allows you to specify a character to be printed when numeric variables contain
ordinary missing values (.). If your data contain characters that represent
special missing values, such as a
or z
, do not
use the MISSING= option to define them; simply define these values in a MISSING
statement.
With survey data, you might want to identify certain
types of missing data. For example, in the data, an A
can mean that the respondent is not at home at the time of the survey; an R
can mean that the respondent refused to answer. Use the MISSING statement
to identify to SAS that the values A
and R
in the input data lines are to be considered special missing values rather
than invalid numeric data values:
data survey;
missing a r;
input id answer;
datalines;
001 2
002 R
003 1
004 A
005 2
;
The resulting data set SURVEY contains exactly the values
that are coded in the input data.
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Statement:
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System
Option:
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