fieldnames

Return field names of a structure, or property names of an object

Syntax

• names = fieldnames(s)
  names = fieldnames(obj)
  names = fieldnames(obj,'-full')
  

Description

names = fieldnames(s) returns a cell array of strings containing the structure field names associated with the structure s.

names = fieldnames(obj) returns a cell array of strings containing the names of the public data fields associated with obj, which is either a MATLAB, COM, or Java object.

names = fieldnames(obj,'-full') returns a cell array of strings containing the name, type, attributes, and inheritance of each field associated with obj, which is either a MATLAB, COM, or Java object.

Examples

Given the structure

• mystr(1,1).name = 'alice';
  mystr(1,1).ID = 0;
  mystr(2,1).name = 'gertrude';
  mystr(2,1).ID = 1
  

the command n = fieldnames(mystr) yields

• n =
      'name'
      'ID'
  

In another example, if f is an object of Java class java.awt.Frame, the command fieldnames(f) lists the properties of f.

• f = java.awt.Frame;
  
  fieldnames(f)
  ans =
      'WIDTH'
      'HEIGHT'
      'PROPERTIES'
      'SOMEBITS'
      'FRAMEBITS'
      'ALLBITS'
          .
          .