What is the scan function in SAS?

The SCAN function in SAS provides a simple and convenient way to parse out words from character strings. The SCAN function can be used to select individual words from text or variables which contain text and then store those words in new variables. Selecting the nth word in a character string.

What is the purpose of scan () function?

SCAN(string,n,delimiters): returns the nth word from the character string string, where words are delimited by the characters in delimiters. It is used to extract words from a character value when the relative order of words is known, but their starting positions are not.

How do I scan a macro in SAS?

The %SCAN and %QSCAN functions search argument and return the nth word. A word is one or more characters separated by one or more delimiters. A delimiter is any of several characters that are used to separate words. You can specify the delimiters in the charlist and modifier arguments.

What is the difference between scan and Substr in SAS?

SCAN extracts words within a value that is marked by delimiters. SUBSTR extracts a portion of the value by stating the specific location. It is best used when we know the exact position of the sub string to extract from a character value. SUBSTR function: is the best choice to extract class level information from ID.

How do I get special characters in a string in SAS?

You can find a specific character, such as a letter, a group of letters, or special characters, by using the index function. For example, suppose that you have a data file with names and other information and you want to identify only those records for people with “Harvey” in their name.

How do you Substr in SAS?

The syntax for the SUBSTR function on the left-hand side of the equal sign is: SUBSTR( string, starting position <, length> ) = ‘characters-to-replace’, while the right-hand side syntax is: SUBSTR( string, starting position <, length>). Syntax illustrated using angle brackets (‘<‘ and ‘>’) is optional.

When do you need the scan function in SAS?

If you need the SCAN function to assign to a variable a word that is longer than 200 characters, then you should explicitly specify the length of that variable.

Which is the correct value for the scan function?

For example, a value of 1 indicates the first word, a value of 2 indicates the second word, and so on. The following rules apply: If count is positive, SCAN counts words from left to right in the character string.

Where to find delimiters in SAS ( are ) function?

A delimiter is any of several characters that are used to separate words. You can specify the delimiters in the charlist and modifier arguments. If you specify the Q modifier, then delimiters inside of substrings that are enclosed in quotation marks are ignored.

What is a nonzero numeric constant in SAS?

is a nonzero numeric constant, variable, or expression that has an integer value that specifies the number of the word in the character string that you want SCAN to select. For example, a value of 1 indicates the first word, a value of 2 indicates the second word, and so on. The following rules apply:

What is the scan function in SAS? The SCAN function in SAS provides a simple and convenient way to parse out words from character strings. The SCAN function can be used to select individual words from text or variables which contain text and then store those words in new variables. Selecting the nth word in…