Returns the length of the input parameter.
The expression for which the string length is desired. If not of type string, expr is converted to string using the default formatting rules of PV-WAVE. (These rules are described in Free Format Output in Chapter 8 of the PV-WAVE Programmer's Guide.)
A long integer containing the string length of expr. If expr is an array, the result is an array with the same structure, with each element containing the length of the corresponding expr element.
a = 'a b c'
Create a scalar string.
PRINT, STRLEN(a)
5
Display the length of a.
b = 45
Create an integer scalar variable.
PRINT, STRLEN(b)
8
Display the length of b converted to string type.
c = STRING(FINDGEN(4), Format = '(f3.1)')
Create a four-element vector of strings.
PRINT, TRANSPOSE(c)
0.0
1.0
2.0
3.0
Display the contents of c as a column vector.
PRINT, TRANSPOSE(STRLEN(c))
3
3
3
3
Display the vector of lengths of elements of c as a column vector.
; This vector is returned by STRLEN.
