关于disp_hhs的几个疑问
function disp_hhs(varargin)error(nargchk(1,3,nargin));
fs = 0; 此处的fs为什么等于0？inf = -20;im = varargin{1};
t = 1:size(im,2);switch nargin
case 1
%raf这是什么意思？
case 2
if isscalar(varargin{2})
inf = varargin{2};
else
t = varargin{2};
end
case 3
if isvector(varargin{2})
t = varargin{2};
inf = varargin{3};
else
inf = varargin{2};
fs = varargin{3};
end
case 4
t = varargin{2};
inf = varargin{3};
fs = varargin{4};end if isempty(inf)
%确定数组是否为空，若为空返回逻辑1，
inf = -20;endif inf > 0
inf = -inf;elseif inf == 0
error('inf must be nonzero')endM=max(max(im)); warning offim = 10*log10(im/M);warning on figure if fs == 0 为什么等于0？
imagesc(t,,im,);
ylabel('normalized frequency')
else
imagesc(t,,im,);
ylabel('frequency')endset(gca,'YDir','normal') xlabel('time')title('Hilbert-Huang spectrum')
页:
[1]