www.gusucode.com > signal 工具箱matlab源码程序 > signal/+fdesign/validstructures.m
%VALIDSTRUCTURES Return the valid structures % V = VALIDSTRUCTURES(D) returns a structure, V, that contains a list of % all the valid filter structures for each design method available for % the object D. % % V = VALIDSTRUCTURES(D, METHOD) returns a cell array, V, containing the % valid filter structures for the object D and the design method, METHOD. % % V = VALIDSTRUCTURES(D, ..., 'SystemObject', FLAG) limits the list of % filter structures to those that are supported by System objects when % FLAG is set to true. Lists all the filter structures supported by % DFILT/MFILT objects when FLAG is set to false. Omitting the % 'SystemObject', FLAG input pair is equivalent to setting the FLAG to % false (DSP System Toolbox required). % % % Example % h = fdesign.lowpass; % validstructures(h, 'equiripple') % % See also FDESIGN/DESIGNMETHODS and FDESIGN/DESIGNOPTS. % Copyright 2004-2011 The MathWorks, Inc.