NUMBER OF WORDS

NUMBER OF WORDS

Let Subcommand

Return the number of words in a string.

There may be times when it is useful to extract the individual words in a string. In order to automate this task, it is helpful to know the number of words in the string.

Dataplot delineates words in a string by spaces. It will treat non-printing characters in the string as spaces. That is, any character in the string with an ASCII collating index less than or equal to 32 or greater than 127 will be treated as a space. In particular, tabs will be treated as spaces. However, hyphens and other special characters such as "&" will not be treated as word boundaries.

LET <nword> = NUMBER OF WORDS <sorg>
where <nword> is a parameter containing the returned number of words in the string; and <sorg> is the name of the string.

LET NWORD = NUMBER OF WORDS S1

The string on the right hand side of the equal sign must be a previously existing string. That is, expressions are not allowed. For example, instead of
LET NWORD = NUMBER OF WORDS "a b c d"

you need to do

LET STRING SORG = a b c d
LET NWORD = NUMBER OF WORDS SORG


The name on the left hand side of the equal sign may be a previously existing parameter. However, if it is a previously existing string/function, variable, or matrix name, an error will be reported and the requested parameter will not be created.

The 2020/08 version of Dataplot added support for the
SET WORD DELIMITER <char>

command. Previously, only the space character (non-printing characters are interpreted as spaces) was recognized. With this command, you can specify a specific character as a delimiter. If a non-space character is specified, spaces and non-printing characters will be treated as part of the word and not as delimiters.

The most common use for this is in parsing comma delimited files.

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. Previous versions may set this limit at 1,000 or 10,000 characters. This limit applies to the combined number of characters for all functions and strings.

None

None

STRING WORD	= Extract a specified word from 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.
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.
GROUP LABEL	= Define the text for group labels.

Data Management

2010/10
2020/08: Added support for the SET WORD DELIMITER command

 
let string s = funnel ramp cone square
.
feedback off
print "String s = ^s"
let nword = number of words s
loop for k = 1 1 nword
    let s^k = string word s k
    print "String ^k = ^s^k"
end of loop
feedback on