How do I find a missing character in SAS?

if charvar=’ ‘ then do; The MISSING function enables you to check for either a character or numeric missing value, as in: if missing(var) then do; In each case, SAS checks whether the value of the variable in the current observation satisfies the condition specified.

How do you represent missing values in SAS?

Numeric missing values are represented by a single period (.). Character missing values are represented by a single blank enclosed in quotes (‘ ‘). Special numeric missing values are represented by a single period followed by a single letter or an underscore (for example .

How do you replace a missing character in SAS?

How to Replace Missing Values in SAS

1. Example Data.
2. Replace Missing Values with Zeros. Using COALESCE. Using ARRAY.
3. Replace Missing Values with the Mean / Median. Using PROC STDIZE.
4. Replace Missing Values with the Min / Max. Using PROC MEANS.
5. Replace Missing Values with the Previous Non-Missing Value. Using UPDATE.

How are numeric and character missing values represented internally?

Usually the basic rule is that character values are represented by a blank (‘ ‘) or a null (”) and numeric values are represented by a single period (.). There are also special characters that can be used to represent missing numeric data. You can use special characters A – Z or _ (underscore).

How do I find missing values for a character variable in SAS?

Check for missing numeric values If x <=. z then PUT “x is missing”; The MISSING function accepts either a character or numeric variable as the argument and returns the value 1 if the argument contains a missing value or zero otherwise.

How do you find missing values of all variables in SAS?

You can use the PROC FREQ procedure to count the number of missing values per column. You use the statement “table _all_ / missing” to do this for all variables. If you want the count the number of a specific (type) of variable, you can change the _all_ keyword for _character_, _numeric_, or a column name.

How do you include missing values in PROC FREQ?

PROC FREQ DATA=sample; TABLE State Rank / MISSING; RUN; The MISSING option appearing after the slash (/) in the TABLE statement tells SAS to include the missing values as a row in the table.

How do you rename missing values in SAS?

Re: Rename Missing Value

1. In EG, click Tasks->Data->Create Format to start the Create Format task (or you can just submit the code below, similar to what the task will generate)
2. Give the format a name (ex. ”
3. Check Specify format width and give it a reasonable width (ex.
4. On the Define Formats page, click New.

How do you update missing values in SAS?

To cause UPDATE to overwrite existing values in the master data set with missing ones in the transaction data set, you must use UPDATEMODE=NOMISSINGCHECK. UPDATE changes or updates the values of selected observations in a master file by applying transactions. UPDATE can also add new observations.

How do you change a variable value in SAS?

How to Replace a Character in SAS

1. Start the TRANWRD function.
2. Specify the input variable that contains the character you want to replace.
3. Specify the character that you want to replace.
4. Specify the character that replaces the unwanted character.
5. Close the TRANWRD function.

How does SAS deal with missing values in the input data?

In SAS code, a blank is typically specified by enclosing a space between two quotation marks, such as “ “ or ‘ ‘. With numeric variables, a missing value is denoted with a period. In SAS code, the period [.] is specified by simply using the period with no quotation marks or parentheses around it.

Is SAS missing statement?

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: The resulting data set SURVEY contains exactly the values that are coded in the input data.

How do you handle missing values in SAS code?

Within these two variable types, missing values are handled slightly differently. With character variables, missing variables are denoted with a blank. In SAS code, a blank is typically specified by enclosing a space between two quotation marks, such as “ “ or ‘ ‘. With numeric variables, a missing value is denoted with a period.

What is a blank in a character variable in SAS?

SAS uses a blank to represent a missing value of a character variable. For example, the data line for Brazil lacks the departure city from the United States:

What is the blank value in a character variable for?

SAS uses a blank to represent a missing value of a character variable.

How to find the value of missing in a numeric variable?

Numeric variables denote missing as ‘.’. Use can use the missing ()/nmiss/cmiss functions to determine a missing value. if missing (var) then do …; I assume that it is a character variable, not a numeric variable. Indeed, missing values of character variables are stored as single blanks, not periods.