MATLAB Function Reference

isfield

Determine if input is MATLAB structure array field

Syntax

• tf = isfield(A, 'field')
  

Description

tf = isfield(A, 'field')    returns logical 1 (true) if field is the name of a field in the structure array A, and logical 0 (false) otherwise. If A is not a structure array, isfield returns false.

Examples

Given the following MATLAB structure,

• patient.name = 'John Doe';
  patient.billing = 127.00;
  patient.test = [79 75 73; 180 178 177.5; 220 210 205];
  

isfield identifies billing as a field of that structure.

• isfield(patient,'billing')
  
  ans =
  
       1
  

See Also

fieldnames, setfield, getfield, orderfields, rmfield, struct, isstruct, iscell, isa, is*, dynamic field names

isequalwithequalnans

isfinite

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