STRING SUBSET COUNT

STRING SUBSET COUNT

Let Subcommand

Return the number of times a substring occurs within another string.

LET <count> = STRING SUBSET COUNT <sorg> <smatch>
where <count> is a parameter containing the number of times <smatch> is found in <sorg>;
            <sorg> is the name of a pre-existing string;
and      <smatch> is the name of a pre-existing string.

LET NC = STRING SUBSET COUNT SORG SMATCH

The strings on the right hand side of the equal sign must be previously existing strings. That is, expressions are not allowed. For example, the following will result in an error message
LET NC = STRING SUBSET COUNT "alan.heckert@nist.gov" "@"

you need to do

LET STRING SORG = alan.heckert@nist.gov
LET STRING SMATCH = @
LET NC = STRING SUBSET COUNT SORG SMATCH


The name on the left hand side of the equal sign should either be a previously existing parameter or not previously defined. If it is a previously existing string, variable, or matrix name, an error will be reported and the requested parameter will not be created.

The total number of characters that Dataplot can use for storing functions and strings is set when Dataplot is built. The current default (11/2008) is 50,000 characters.

None

None

SUBSTRING	=	Extract a substring of a previously defined string.
STRING STARTS WITH	=	Check whether a string starts with a specified substring.
STRING ENDS WITH	=	Check whether a string starts with a specified substring.
LET FUNCTION	=	Defines a function.
LET STRING	=	Defines a string.
READ STRING	=	= Reads a string from a file.
STRING REMOVE SPACE	=	Remove spaces from a string.
STRING REMOVE PUNCTUATION	=	Remove punctuation from a string.
STRING DELETE	=	Remove user specifed characters from a string.
NUMBER OF WORDS	=	Return the number of words in a string.
UPPER CASE	=	Convert a string to upper case.
LOWER CASE	=	Convert a string to lower case.
LET FUNCTION	=	Defines a function.
LET STRING	=	Defines a string.
READ STRING	=	Reads a string from a file.
SUBSTITUTE CHARACTER (^)	=	Substitute the value of a string or parameter.
CONCATENATE CHARACTER (&)	=	Concatenate two strings.
SUBTRING	=	Extract a substring from an existing string.
BLANK STRING	=	Create a blank string.
STRING INDEX	=	Extract the start/stop positions of a substring within a string.
STRING CONCATENATE	=	Concatenate one or more previously defined strings.
STRING EDIT	=	Edit a string.
STRING MERGE	=	Insert a string into another string without overwrite.
STRING LENGTH	=	Return the length of a string.
CHARACTER	=	Convert numeric values to strings based on the ASCII collating sequence.
ICHAR	=	Convert a string to numeric values based on the ASCII collating sequence.

Data Management

2019/02

 
LET STRING S1 = alan.heckert@nist.gov,james.filliben@nist.gov
LET STRING S2 = @
LET NNAMES = STRING SUBSET COUNT S1 S2
    

The value of NNAMES will be 2.