MATLAB Function Reference

fieldnames

Return field names of a structure, or property names of a MATLAB object or Java 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 or a 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 or a 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 x is an object of Java class java.awt.Frame, the command fieldnames(x) results in the display

ans =
'width'
'height'

See Also

getfield, setfield, rmfield

fgets (serial)

figflag