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str_sub_str

Replaces a substring with a new substring.

Available in version 5.1.1 and later.

Prototype

	function str_sub_str (
		string_val    : string,  
		oldString [1] : string,  
		newString [1] : string   
	)

	return_val [dimsizes(string_val)] :  string

Arguments

string_val

A string array of any dimensionality.

oldString

The substring to be replaced.

newString

The substring to replace with.

Description

This function returns an array of strings with every occurrence of oldString replaced by newString.

If either oldString or newString are missing, then the original strings will be returned.

Examples

Example 1

Replace "orange" with "strawberry", and put back into the same variable:

   aob = "apple_orange_banana"   
   o   = "orange"
   s   = "strawberry"
   aob = str_sub_str(aob,o,s)
   print(aob)

Output:

(0)     apple_strawberry_banana

Example 2

Assume you have an ASCII file "asc4.txt":

The 15 most populous nations
Data taken from Wikipedia, October 2008
----------------------------------------------------------------------
Country Population (millions) Percentage (of world)
China           1,321                 19.84%
India           1,132                 16.96%
United States   304                   4.56%
Indonesia       232                   3.47%
Brazil          187                   2.80%
Pakistan        163                   2.44%
Bangladesh      159                   2.38%
Nigeria         148                   2.22%
Russia          142                   2.13%
Japan           128                   1.92%
Mexico          107                   1.60%
Philippines     89                    1.33%
Vietnam         84                    1.31%
Germany         82                    1.23%
Egypt           81                    1.13%
----------------------------------------------------------------------
Total           4,356                 65.32%

The following script will replace "United States" with "U.S. " and "," with "":

 flnm = "asc4.txt"

 strs = asciiread(flnm,-1,"string")

 strs = str_sub_str(strs, "United States", "U.S.         ")
 strs = str_sub_str(strs, ",", "")
 print(strs)