ee.String.match

    • The String.match method matches a string against a regular expression and returns a list of matching strings.

    • It takes a regular expression string and optional flags ('g' for global, 'i' for ignore case) as arguments.

    • The method can be used to find specific patterns within a string, as demonstrated by various examples in JavaScript and Python.

     Matches a string against a regular expression. Returns a list of matching strings.
    Usage Returns
    String. match (regex, flags ) List
    Argument Type Details
    this: input
    		String The string in which to search.
    regex
    		String The regular expression to match.
    flags
    		String, default: "" A string specifying a combination of regular expression flags, specifically one or more of: 'g' (global match) or 'i' (ignore case).

    Examples

    Code Editor (JavaScript) 

     var 
  
 s 
  
 = 
  
 ee 
 . 
 String 
 ( 
 'ABCabc123' 
 ); 
 print 
 ( 
 s 
 . 
 match 
 ( 
 '' 
 )); 
  
 // "" 
 print 
 ( 
 s 
 . 
 match 
 ( 
 'ab' 
 , 
  
 'g' 
 )); 
  
 // ab 
 print 
 ( 
 s 
 . 
 match 
 ( 
 'ab' 
 , 
  
 'i' 
 )); 
  
 // AB 
 print 
 ( 
 s 
 . 
 match 
 ( 
 'AB' 
 , 
  
 'ig' 
 )); 
  
 // ["AB","ab"] 
 print 
 ( 
 s 
 . 
 match 
 ( 
 '[a-z]+[0-9]+' 
 )); 
  
 // "abc123" 
 print 
 ( 
 s 
 . 
 match 
 ( 
 '\\d{2}' 
 )); 
  
 // "12" 
 // Use [^] to match any character except a digit. 
 print 
 ( 
 s 
 . 
 match 
 ( 
 'abc[^0-9]' 
 , 
  
 'i' 
 )); 
  
 // ["ABCa"]

    Python setup

    See the Python Environment page for information on the Python API and using geemap for interactive development.

     import 
  
 ee 
 import 
  
 geemap.core 
  
 as 
  
 geemap

    Colab (Python) 

     s 
 = 
 ee 
 . 
 String 
 ( 
 'ABCabc123' 
 ) 
 display 
 ( 
 s 
 . 
 match 
 ( 
 '' 
 )) 
 # "" 
 display 
 ( 
 s 
 . 
 match 
 ( 
 'ab' 
 , 
 'g' 
 )) 
 # ab 
 display 
 ( 
 s 
 . 
 match 
 ( 
 'ab' 
 , 
 'i' 
 )) 
 # AB 
 display 
 ( 
 s 
 . 
 match 
 ( 
 'AB' 
 , 
 'ig' 
 )) 
 # ['AB','ab'] 
 display 
 ( 
 s 
 . 
 match 
 ( 
 '[a-z]+[0-9]+' 
 )) 
 # 'abc123' 
 display 
 ( 
 s 
 . 
 match 
 ( 
 ' 
 \\ 
 d 
 {2} 
 ' 
 )) 
 # '12' 
 # Use [^] to match any character except a digit. 
 display 
 ( 
 s 
 . 
 match 
 ( 
 'abc[^0-9]' 
 , 
 'i' 
 )) 
 # ['ABCa']
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