Learn more about MATLAB

fieldnames - Field names of structure, or public fields of 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 field names for obj. If obj is a MATLAB object, then return value names contains the names of the fields in that object. If obj is an object of the Java programming language, then names contains the names of the public fields. MATLAB objects may override fieldnames and define their own behavior.

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 a COM or Java object. Note that fieldnames does not support the –full option for MATLAB objects.

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 i is an object of Java class java.awt.Integer, the command fieldnames(i) lists the properties of i.

i = java.lang.Integer(0);
fieldnames(i)

MATLAB displays:

ans = 
    'MIN_VALUE'
    'MAX_VALUE'
    'TYPE'
    'SIZE'

See Also

setfield, getfield, isfield, orderfields, rmfield, dynamic field names

fgets (serial)

figure

© 1984-2009- The MathWorks, Inc.    -   Site Help   -   Patents   -   Trademarks   -   Privacy Policy   -   Preventing Piracy   -   RSS