# isfield2

## PURPOSE

Similar to isfield but also test whether fields are initialized.

## SYNOPSIS

function tf = isfield2( S, fs, isinit )

## DESCRIPTION

     Similar to isfield but also test whether fields are initialized.

     A more comprehensive test of what fields are present [and optionally
     initialized] in a stuct S.  fs is either a single field name or a cell
     array of field names.  The presence of all fields in fs are tested for in
     S, tf is true iif all fs are present. Additionally, if isinit==1, then tf
     is true iff every field fs of every element of S is nonempty (test done
     using isempty).

     USAGE
      tf = isfield2( S, fs, [isinit] )

     INPUTS
      S        - struct array
      fs       - cell of string name or string
      isinit   - [0] if true additionally test if all fields are initialized

     OUTPUTS
      tf      - true or false, depending on results of above tests

     EXAMPLE
      isfield2( struct('a',1,'b',2), {'a','b'}, 1 )

     See also ISFIELD

     Piotr's Image&Video Toolbox      Version 2.10
     Copyright 2008 Piotr Dollar.  [pdollar-at-caltech.edu]
     Please email me if you find bugs, or have suggestions or questions!
     Licensed under the Lesser GPL [see external/lgpl.txt]

## CROSS-REFERENCE INFORMATION

This function calls:

This function is called by:

- seqWriterPlugin Plugin for seqIo and videoIO to allow writing of seq files.